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118-432: Packards of all series (110, 120, 160, 180) shared similar body styling in 1940 (which some later said led to a "cheapening" of the once-exclusive luxury marque), using the same bodies with hoods and front fenders of different length to meet their respective chassis. Thus the 160 and 180 got identical bodies. However, the 180s featured finer interior detailing with the best fabrics, leather, and carpeting available. Packard used

236-420: A crankcase , crankshaft , piston rod , piston , piston ring , cylinder head and valves. This compressor uses two interleaving scrolls to compress the refrigerant. it consists of one fixed and one orbiting scrolls. This type of compressor is more efficient because it has 70 percent less moving parts than a reciprocating compressor. This compressor use two very closely meshing spiral rotors to compress

354-568: A dictator in the early Roman Republic who saved Rome from a crisis and then retired to farming because he did not want to remain in power, becoming a symbol of Roman civic virtue . Cincinnati began in 1788 when Mathias Denman, Colonel Robert Patterson , and Israel Ludlow landed at a spot at the northern bank of the Ohio opposite the mouth of the Licking and decided to settle there. The original surveyor, John Filson , named it "Losantiville",

472-501: A "wired thermostat," is a device that controls an air conditioner by switching heating or cooling on or off. It uses different sensors to measure temperatures and actuate control operations. Mechanical thermostats commonly use bimetallic strips , converting a temperature change into mechanical displacement, to actuate control of the air conditioner. Electronic thermostats, instead, use a thermistor or other semiconductor sensor, processing temperature change as electronic signals to control

590-534: A 1939 architecture graduate from the University of Texas at Austin , developed the first experimental "suburb" with inbuilt air conditioning in each house. 22 homes were developed on a flat, treeless track in northwest Austin, Texas , and the community was christened the 'Austin Air-Conditioned Village.' The residents were subjected to a year-long study of the effects of air conditioning led by

708-570: A 24-hour period. The value is equal to 12,000 BTU IT per hour, or 3,517 watts . Residential central air systems are usually from 1 to 5 tons (3.5 to 18 kW) in capacity. The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment . A similar standard

826-474: A century and a half, Cincinnati went unchallenged as the most prominent of Ohio's cities, a role that earned it the nickname of "chief city of Ohio" in the 1879 New American Cyclopædia . In addition to this book, countless other books have documented the social history of both the city and its frontier people. The city fathers, of Anglo-American families of prominence, were Episcopalian . Inspired by its earlier horseback circuit preachers , early Methodism

944-678: A combination of syllables drawn from French and Latin words, intended to mean "town opposite the mouth of the Licking". On January 4, 1790, St. Clair changed the name of the settlement to honor the Society of the Cincinnati. In 1811, the introduction of steamboats on the Ohio River opened up the city's trade to more rapid shipping, and the city established commercial ties with St. Louis, Missouri , and New Orleans downriver. Cincinnati

1062-405: A cooling tower on its condenser side. An air source heat pump shares many components with an air conditioning system, but includes a reversing valve , which allows the unit to be used to heat as well as cool a space. Air conditioning equipment will reduce the absolute humidity of the air processed by the system if the surface of the evaporator coil is significantly cooler than the dew point of

1180-424: A crescent around the city: Mount Adams , Walnut Hills , Mount Auburn , Vine Street Hill , College Hill , Fairmont (now rendered Fairmount ), and Mount Harrison (now known as Price Hill ). The name refers to ancient Rome, reputed to be built on seven hills. "Queen City" is taken from an 1819 newspaper article and further immortalized by the 1854 poem "Catawba Wine". In it, Henry Wadsworth Longfellow wrote of

1298-422: A defrosting cycle to be performed. The icing problem becomes much more severe with lower outdoor temperatures, so heat pumps are sometimes installed in tandem with a more conventional form of heating, such as an electrical heater, a natural gas , heating oil , or wood-burning fireplace or central heating , which is used instead of or in addition to the heat pump during harsher winter temperatures. In this case,

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1416-654: A family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC) . Heat pumps are similar in many ways to air conditioners, but use a reversing valve to allow them both to heat and to cool an enclosed space. Air conditioners, which typically use vapor-compression refrigeration , range in size from small units used in vehicles or single rooms to massive units that can cool large buildings. Air source heat pumps , which can be used for heating as well as cooling , are becoming increasingly common in cooler climates. Air conditioners can reduce mortality rates due to higher temperature. According to

1534-582: A few special bodies on Packard-basis, beginning in 1937. He tried to sell Packard on the idea of Darrin-bodied cars being offered directly by Packard, and finally got his way after parking one if his creations outside the Packard dealers' annual conference. For the 1940 model year, three Darrin bodystyles were available: the closed four-door Sport Sedan, the four-door Convertible Sedan, and the two-door Convertible Victoria. About 100 Packard Darrins were built until 1942, when production of private cars ended because of

1652-778: A gap between the two walls to encourage air flow, were found in the ancient city of Hamoukar , in modern Syria . Ancient Egyptian buildings also used a wide variety of passive air-conditioning techniques. These became widespread from the Iberian Peninsula through North Africa, the Middle East, and Northern India. Passive techniques remained widespread until the 20th century when they fell out of fashion and were replaced by powered air conditioning. Using information from engineering studies of traditional buildings, passive techniques are being revived and modified for 21st-century architectural designs. Air conditioners allow

1770-591: A keystone of civic history; and among Methodist institutions were The Christ Hospital as well as projects of the German Methodist Church . One of Cincinnati's biggest proponents of Methodism was the Irish immigrant James Gamble , who together with William Procter founded Procter & Gamble ; in addition to being a devout Methodist, Gamble and his estate donated money to construct Methodist churches throughout Greater Cincinnati. Cincinnati, being

1888-582: A long-standing business connection. Air conditioning had been used on Henney-bodied ambulances as early as 1938. It was the first time that air conditioning was available on a stock automobile. The Packard 180 was also the first car to have power windows . In an exclusive agreement with Packard from 1937 until Henney's demise in 1954, Henney provided bodies for Packards's ambulances , hearses and flower cars , and they often provided special custom bodywork for passenger cars. The pre-World War II Henney models usually had 160-180 trim but were actually constructed on

2006-510: A male householder with no wife present, and 53.3% were non-families. 43.4% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older. The average household size was 2.09 and the average family size was 3.00. The median age in the city was 32.5 years. 21.6% of residents were under the age of 18; 14.6% were between the ages of 18 and 24; 28.4% were from 25 to 44; 24.1% were from 45 to 64; and 10.8% were 65 years of age or older. The gender makeup of

2124-653: A number of hills, bluffs, and low ridges overlooking the Ohio in the Bluegrass region of the country. The tristate is geographically located within the Midwest at the far northern extremity of the Upland South . Three municipalities are enveloped by the city: Norwood , Elmwood Place , and Saint Bernard . Norwood is a business and industrial city, while Elmwood Place and Saint Bernard are small, primarily residential, villages. Cincinnati does not have an exclave, but

2242-456: A patent in 1851, but following the death of his main backer, he was not able to realize his invention. In 1851, James Harrison created the first mechanical ice-making machine in Geelong, Australia , and was granted a patent for an ether vapor-compression refrigeration system in 1855 that produced three tons of ice per day. In 1860, Harrison established a second ice company. He later entered

2360-458: A population growth, marking the first such increase since the 1950 census. On January 4, 2022, Aftab Pureval assumed office as the 70th mayor of Cincinnati. Cincinnati has many nicknames , including Cincy, The Queen City, The Queen of the West, The Blue Chip City, and The City of Seven Hills. These are more typically associated with professional, academic, and public relations references to

2478-425: A quantity of gas from discharge to the suction side. The compressor will keep operating at the same speed, but due to the bypass, the refrigerant mass flow circulating with the system is reduced, and thus the cooling capacity. This naturally causes the compressor to run uselessly during the periods when the bypass is operating. The turn down capacity varies between 0 and 100%. Several compressors can be installed in

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2596-405: A remote control to the air conditioner. The output of the infrared LED (like that of any infrared remote) is invisible to the human eye because its wavelength is beyond the range of visible light (940 nm). This system is commonly used on mini-split air conditioners because it is simple and portable. Some window and ducted central air conditioners uses it as well. A wired controller, also called

2714-874: A rivertown crossroads, depended on trade with the slave states south of the Ohio River at a time when thousands of black people were settling in the free state of Ohio. Most of them came after the American Civil War and were from Kentucky and Virginia with many of them fugitives who had sought freedom and work in the North. In the antebellum years, the majority of native-born whites in the city came from northern states, primarily Pennsylvania . Though 57 percent of whites migrated from free states, 26 percent were from southern states and they retained their cultural support for slavery. This quickly led to tensions between pro-slavery residents and abolitionists who sought lifting restrictions on free black people, as codified in

2832-460: A single or a few rooms of a building, without ducts and in a decentralized manner. Multi-zone or multi-split systems are a common application of ductless systems and allow up to eight rooms (zones or locations) to be conditioned independently from each other, each with its indoor unit and simultaneously from a single outdoor unit. The first mini-split system was sold in 1961 by Toshiba in Japan, and

2950-500: A special woolen ceiling in these cars only which was sewn longitudinally. Packard built the partition in its Limousines in a way that there was no hint of it when the partition glass was lowered, allowing the owner to use the car by himself as a sedan (thus the designation "Sedan Limousine" by Packard). In 1940, Packard made air conditioning an option. It was developed by the Henney Motor Company , with whom Packard had

3068-438: A split central system, and deliver air, possibly through ducts, to the spaces to be cooled. Depending on their construction they may be outdoors or indoors, on roofs ( rooftop units ), draw the air to be conditioned from inside or outside a building and be water or air-cooled. Often, outdoor units are air-cooled while indoor units are liquid-cooled using a cooling tower. medium (large capacity) This compressor consists of

3186-541: A thin film of ice formed on the surface of the thermometer's bulb and that the ice mass was about 6 mm ( 1 ⁄ 4  in) thick when they stopped the experiment upon reaching −14 °C (7 °F). Franklin concluded: "From this experiment, one may see the possibility of freezing a man to death on a warm summer's day." The 19th century included many developments in compression technology. In 1820, English scientist and inventor Michael Faraday discovered that compressing and liquefying ammonia could chill air when

3304-424: A window frame or on a wall opening. The unit usually has an internal partition separating its indoor and outdoor sides, which contain the unit's condenser and evaporator, respectively. PTAC systems may be adapted to provide heating in cold weather, either directly by using an electric strip, gas , or other heaters, or by reversing the refrigerant flow to heat the interior and draw heat from the exterior air, converting

3422-578: Is 79 feet 11 + 7 ⁄ 8  inches (24.381 m), having crested January 26, 1937. Various parts of Cincinnati flood at different points: Riverbend Music Center in the California neighborhood floods at 42 feet (13 m), while Sayler Park floods at 71 feet (22 m) and the Freeman Avenue flood gate closes at 75 feet (23 m). Frequent flooding has hampered the growth of Cincinnati's municipal airport at Lunken Field and

3540-476: Is $ 158,200, and the cost of living in Cincinnati is 8% below the national average. As of September 2022, the unemployment rate is 3.3%, below the national average. Several Fortune 500 companies are headquartered in Cincinnati, such as Kroger , Procter & Gamble , Western & Southern Financial Group , Fifth Third Bank , American Financial Group , and Cintas . General Electric has headquartered their Global Operations Center in Cincinnati; GE Aerospace

3658-477: Is already complete and 100 percent occupied as of early 2013. Smale Riverfront Park is being developed along with The Banks, and is Cincinnati's newest park. Nearly $ 3.5 billion have been invested in the urban core of Cincinnati (including Northern Kentucky). Much of this development has been undertaken by 3CDC . The Cincinnati Bell Connector began in September 2016. Cincinnati is midway by river between

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3776-525: Is among the largest, most intact urban historic districts in the United States. Most of Over-the-Rhine's ornate brick buildings were built by German immigrants from 1865 to the 1880s. The neighborhood has been intensely redeveloped in the 21st century, with a focus on fostering small businesses. Cincinnati is at the southern limit (considering the 0 °C or 32 °F isotherm ) of the humid continental climate zone ( Köppen : Dfa ), bordering

3894-619: Is based in Evendale . The Kroger Company employs over 20,000 people locally, making it the largest employer in the city; the other four largest employers are Cincinnati Children's Hospital , TriHealth , the University of Cincinnati , and St. Elizabeth Healthcare . Cincinnati is home to a branch office of the Federal Reserve Bank of Cleveland . Cincinnati was platted and proliferated by American settlers , including Scotch Irish , frontiersmen , and keelboaters . For over

4012-407: Is highly dependent on operating conditions, especially absolute temperature and relative temperature between sink and system, and is often graphed or averaged against expected conditions. Air conditioner equipment power in the U.S. is often described in terms of " tons of refrigeration ", with each approximately equal to the cooling power of one short ton (2,000 pounds (910 kg) of ice melting in

4130-690: Is home to numerous structures that are noteworthy due to their architectural characteristics or historic associations, including the aforementioned Carew Tower , the Scripps Center, the Ingalls Building , Cincinnati Union Terminal , and the Isaac M. Wise Temple . Queen City Square opened in January 2011. The building is the tallest in Cincinnati and the third tallest in Ohio, reaching a height of 665 feet (203 m). Since April 1, 1922,

4248-503: Is rejected to the environment and an internal heat exchanger (the evaporator , or Fan Coil Unit, FCU) with the piped refrigerant being circulated between the two. The FCU is then connected to the spaces to be cooled by ventilation ducts . Floor standing air conditioners are similar to this type of air conditioner but sit within spaces that need cooling. Large central cooling plants may use intermediate coolant such as chilled water pumped into air handlers or fan coil units near or in

4366-469: Is the European seasonal energy efficiency ratio (ESEER). Efficiency is strongly affected by the humidity of the air to be cooled. Dehumidifying the air before attempting to cool it can reduce subsequent cooling costs by as much as 90 percent. Thus, reducing dehumidifying costs can materially affect overall air conditioning costs. This type of controller uses an infrared LED to relay commands from

4484-619: Is the economic and cultural hub of the Cincinnati metropolitan area , Ohio's most populous metro area, and the nation's 30th-largest , with over 2.265 million residents. Throughout much of the 19th century, Cincinnati was among the top 10 U.S. cities by population . The city developed as a river town for cargo shipping by steamboats , located at the crossroads of the Northern and Southern United States, with fewer immigrants and less influence from Europe than East Coast cities in

4602-408: Is the process of removing heat from an enclosed space to achieve a more comfortable interior temperature (sometimes referred to as 'comfort cooling') and in some cases also strictly controlling the humidity of internal air. Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling . Air conditioning is a member of

4720-592: The Coney Island amusement park. Downtown Cincinnati is protected from flooding by the Serpentine Wall at Yeatman's Cove and another flood wall built into Fort Washington Way . Parts of Cincinnati also experience flooding from the Little Miami River and Mill Creek . Cincinnati consists of fifty-two neighborhoods. Many of these neighborhoods were once villages that have been annexed by

4838-561: The Indiana counties of Dearborn , Franklin , Union , and Ohio . Metropolitan Cincinnati has the twenty-eighth largest economy in the United States and the fifth largest in the Midwest , after Chicago , Minneapolis–St. Paul , Detroit , and St. Louis . In 2016, it had the fastest-growing Midwestern economic capital. The gross domestic product for the region was $ 127 billion (~$ 160 billion in 2023) in 2015. The median home price

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4956-518: The International Energy Agency (IEA) 1.6 billion air conditioning units were used globally in 2016. The United Nations called for the technology to be made more sustainable to mitigate climate change and for the use of alternatives, like passive cooling, evaporative cooling , selective shading, windcatchers , and better thermal insulation . Air conditioning dates back to prehistory. Double-walled living quarters, with

5074-601: The Music Hall , Cincinnatian Hotel , and Roebling Bridge . Cincinnati has the twenty-eighth largest economy in the United States and the fifth largest in the Midwest , home to several Fortune 500 companies including Kroger , Procter & Gamble , and Fifth Third Bank . It is home to three professional sports teams: the Cincinnati Reds of Major League Baseball ; the Cincinnati Bengals of

5192-571: The National Football League ; and FC Cincinnati of Major League Soccer ; it is also home to the Cincinnati Cyclones , a minor league ice hockey team. The city's largest institution of higher education, the University of Cincinnati , was founded in 1819 as a municipal college and is now ranked as one of the 50 largest in the United States. The Sixth Circuit Court of Appeals is based in the city. Two years after

5310-534: The West ). Cooling in traditional air conditioner systems is accomplished using the vapor-compression cycle, which uses a refrigerant's forced circulation and phase change between gas and liquid to transfer heat. The vapor-compression cycle can occur within a unitary, or packaged piece of equipment; or within a chiller that is connected to terminal cooling equipment (such as a fan coil unit in an air handler) on its evaporator side and heat rejection equipment such as

5428-540: The ZIS-110 . James Ward found no supporting evidence in the Packard archives of such a transfer. Also, the ZIS-110 shares no sheet metal with any Packard, despite the fact that its external decor elements were intentionally designed to heavily resemble pre-war Packards, favoured by Stalin after he had received a '38 Super Eight convertible sedan as gift from Franklin D. Roosevelt . Designer Howard "Dutch" Darrin had made

5546-470: The county seat of Hamilton County, Ohio , United States. Settled by Europeans in 1788, the city is located on the northern side of the confluence of the Licking and Ohio rivers, the latter of which marks the state line with Kentucky . The population of Cincinnati was 309,317 in 2020, making it the third-most populous city in Ohio after Columbus and Cleveland and 64th in the United States . The city

5664-602: The humid subtropical climate zone ( Cfa ). Summers are hot and humid, with significant rainfall in each month and highs reaching 90 °F (32 °C) or above on 21 days per year, often with high dew points and humidity. July is the warmest month, with a daily average temperature of 75.9 °F (24.4 °C). Winters tend to be cold and moderately snowy, with January, the coldest month, averaging at 30.8 °F (−0.7 °C). Lows reach 0 °F (−18 °C) on an average 2.6 nights yearly. An average winter will see around 22.1 inches (56 cm) of snowfall, contributing to

5782-400: The refrigeration cycle and act as an air source heat pump , thus heating instead of cooling the indoor environment. They are also commonly referred to as "reverse cycle air conditioners". The heat pump is significantly more energy-efficient than electric resistance heating , because it moves energy from air or groundwater to the heated space and the heat from purchased electrical energy. When

5900-419: The "Black Code" of 1804. In the pre-Civil War period, Cincinnati had been called "a Southern city on free soil". Volatile social conditions saw riots in 1829 , when many black people lost their homes and property. As the Irish entered the city in the late 1840s, they competed with black people at the lower levels of the economy. White-led riots against black people occurred in 1836 , when an abolitionist press

6018-481: The 49- story Carew Tower , which was the city's tallest building upon its completion. Cincinnati weathered the Great Depression better than most American cities of its size, largely due to a resurgence in river trade, which was less expensive than transporting goods by rail. The Ohio River flood of 1937 was one of the worst in the nation's history and destroyed many areas along the Ohio valley. Afterward

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6136-500: The Great Hall of Westminster Abbey with an apparatus of troughs and vats. Drebbel's contemporary Francis Bacon , like della Porta a believer in science communication , may not have been present at the demonstration, but in a book published later the same year, he described it as "experiment of artificial freezing" and said that "Nitre (or rather its spirit) is very cold, and hence nitre or salt when added to snow or ice intensifies

6254-509: The Ohio flood stage at Cincinnati has officially been set at 52 feet (16 m), as measured from the John A. Roebling Suspension Bridge . At this depth, the pumping station at the mouth of Mill Creek is activated. From 1873 to 1898, the flood stage was 45 feet (14 m). From 1899 to March 31, 1922, it was 50 feet (15 m). The Ohio reached its lowest level, less than 2 feet (0.61 m), in 1881; conversely, its all-time high water mark

6372-598: The Packard 120A 156" wheelbase chassis with the smaller 288 cubic inch engine although there were also 160 and 180 versions available. Packard offered exclusive coachwork beginning in 1937 with the LeBaron Cabriolet body series L-394 for US$ 4,850 ($ 102,793 in 2023 dollars ) and the LeBaron Town car body series L-395 for US$ 4,990 ($ 105,760 in 2023 dollars ). In 1938 through 1942 Rollston and Brunn & Company offered several custom coachwork options to

6490-558: The Popular Clipper name was used on all Packard models, and the top level car was named the Custom Super Clipper, essentially using the same prewar technology with minor appearance updates. The brightwork used minimally was stainless steel instead of chrome, and interior fabrics were wool upholstery, broadcloth or leather as the buyer selected. Until an all new model could be introduced, the Custom Super Clipper used

6608-585: The United States until its sale to Norfolk Southern in March 2024. In 1884, outrage over a manslaughter verdict in what many observers thought was a clear case of murder triggered the Courthouse riots , one of the most destructive riots in American history. Over the course of three days, 56 people were killed and over 300 were injured. The riots ended the regime of Republican boss Thomas C. Campbell . At

6726-410: The air conditioner into a heat pump . They may be installed in a wall opening with the help of a special sleeve on the wall and a custom grill that is flush with the wall and window air conditioners can also be installed in a window, but without a custom grill. Packaged air conditioners (also known as self-contained units) are central systems that integrate into a single housing all the components of

6844-400: The air conditioner. These controllers are usually used in hotel rooms because they are permanently installed into a wall and hard-wired directly into the air conditioner unit, eliminating the need for batteries. * where the typical capacity is in kilowatt as follows: Ductless systems (often mini-split, though there are now ducted mini-split) typically supply conditioned and heated air to

6962-441: The air in his textile mill. Cramer coined the term "air conditioning" in a patent claim which he filed that year, where he suggested that air conditioning was analogous to "water conditioning", then a well-known process for making textiles easier to process. He combined moisture with ventilation to "condition" and change the air in the factories; thus, controlling the humidity that is necessary in textile plants. Willis Carrier adopted

7080-440: The atmosphere even in liquid-cooled chillers through the use of cooling towers . Chillers may be air- or liquid-cooled. A portable system has an indoor unit on wheels connected to an outdoor unit via flexible pipes, similar to a permanently fixed installed unit (such as a ductless split air conditioner). Hose systems, which can be monoblock or air-to-air , are vented to the outside via air ducts. The monoblock type collects

7198-567: The beginning of the 20th century, Cincinnati had a population of 325,902. The city completed many ambitious projects in the 20th century starting with the Ingalls Building which was completed in 1903. An early rejuvenation of downtown began into the 1920s and continued into the next decade with the construction of Cincinnati Union Terminal , the United States Courthouse and Post Office , the Cincinnati Subway , and

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7316-617: The biggest increases in India and China . Between 1995 and 2004, the proportion of urban households in China with air conditioners increased from 8% to 70%. As of 2015, nearly 100 million homes, or about 87% of US households, had air conditioning systems. In 2019, it was estimated that 90% of new single-family homes constructed in the US included air conditioning (ranging from 99% in the South to 62% in

7434-638: The border between the free state of Ohio and the slave state of Kentucky , made it a prominent location for slaves to escape the slave-owning south. Many prominent abolitionists also called Cincinnati their home during this period, and made it a popular stop on the Underground Railroad . In 2004, the National Underground Railroad Freedom Center was completed along Freedom Way in Downtown, honoring

7552-626: The building's indoor environment to remain relatively constant, largely independent of changes in external weather conditions and internal heat loads. They also enable deep plan buildings to be created and have allowed people to live comfortably in hotter parts of the world. In 1558, Giambattista della Porta described a method of chilling ice to temperatures far below its freezing point by mixing it with potassium nitrate (then called "nitre") in his popular science book Natural Magic . In 1620, Cornelis Drebbel demonstrated "Turning Summer into Winter" for James I of England , chilling part of

7670-416: The building. Variable refrigerant flow indoor units can also be turned off individually in unused spaces. The lower start-up power of VRF's DC inverter compressors and their inherent DC power requirements also allow VRF solar-powered heat pumps to be run using DC-providing solar panels. Split-system central air conditioners consist of two heat exchangers , an outside unit (the condenser ) from which heat

7788-599: The canal connected Cincinnati to nearby Middletown ; by 1840, it had reached Toledo . Railroads were the next major form of commercial transportation to come to Cincinnati. In 1836, the Little Miami Railroad was chartered. Construction began soon after, to connect Cincinnati with the Mad River and Lake Erie Railroad, and provide access to the ports of the Sandusky Bay on Lake Erie . During

7906-468: The cities of Pittsburgh, Pennsylvania , and Cairo, Illinois . The downtown lies near the mouth of the Licking , a confluence where the first settlement occurred. Metro Cincinnati spans southern Ohio, southeastern Indiana, and northern Kentucky; the census bureau has measured the city proper at 79.54 square miles (206.01 km ), of which 77.94 square miles (201.86 km ) are land and 1.60 square miles (4.14 km ) are water. The city spreads over

8024-415: The city built protective flood walls . After World War II , Cincinnati unveiled a master plan for urban renewal that resulted in modernization of the inner city. During the 1950s, Cincinnati's population peaked at 509,998. Since the 1950s, $ 250 million has been spent on improving neighborhoods, building clean and safe low- and moderate-income housing, providing jobs and stimulating economic growth. At

8142-667: The city government does own several properties outside the corporation limits: French Park in Amberley Village and the disused runway at the former Blue Ash Airport in Blue Ash . Cincinnati has many landmarks across its area. Some of these landmarks are recognized nationwide, others are more recognized among locals. These landmarks include: Union Terminal , Carew Tower , Great American Tower , Fountain Square , Washington Park , and Great American Ballpark . Cincinnati

8260-504: The city itself. Subsequently, substantial transformations unfolded, particularly in the process of gentrification within the Over-the-Rhine neighborhood. In 2018, MLS announced the inclusion of FC Cincinnati , becoming the city's third professional sports team. TQL Stadium , located on Cincinnati's west end, was subsequently constructed and opened its doors in 2021. Notably, the 2020 census revealed that Cincinnati had witnessed

8378-500: The city was 48.4% male and 51.6% female. As of the 2022 census estimates , the Cincinnati metropolitan area had a population of 2,265,051, making it the 30th-largest metropolitan statistical area in the country. It includes the Ohio counties of Hamilton , Butler , Warren , Clermont , Clinton , and Brown , as well as the Kentucky counties of Boone , Bracken , Campbell , Gallatin , Grant , Kenton , and Pendleton , and

8496-446: The city was 50.3% White , 41.4% African American , 0.1% Native American , 2.2% Asian , 0.1% Pacific Islander , 1.2% from other races , and 4.6% from two or more races. Hispanic or Latino of any race were 4.2% of the population. There were 138,696 households, of which 25.4% had children under the age of 18 living with them, 23.2% were married couples living together, 19.1% had a female householder with no husband present, 4.4% had

8614-474: The city's involvement in the Underground Railroad. In 1859, Cincinnati laid out six streetcar lines; the cars were pulled by horses and the lines made it easier for people to get around the city. By 1872, Cincinnatians could travel on the streetcars within the city and transfer to rail cars for travel to the hill communities. The Cincinnati Inclined Plane Company began transporting people to

8732-549: The city, including restaurant names such as Blue Chip Cookies , and are not commonly used by locals in casual conversation, with the exception of Cincy, which is often used to refer to the city in absentia. "The City of Seven Hills" stems from the June 1853 edition of the West American Review , "Article III—Cincinnati: Its Relations to the West and South", which described and named seven specific hills. The hills form

8850-580: The city, with many retaining their former names, such as Walnut Hills and Mount Auburn . Westwood is the city's most populous neighborhood, with other significant neighborhoods including CUF (home to the University of Cincinnati ) and Price Hill . Downtown Cincinnati is the city's central business district and contains a number of neighborhoods in the flat land between the Ohio River and uptown. These neighborhoods include Over-the-Rhine , Pendleton , Queensgate , and West End . Over-the-Rhine

8968-611: The city: And this Song of the Vine, This greeting of mine, The winds and the birds shall deliver, To the Queen of the West, In her garlands dressed, On the banks of the Beautiful River. For many years, Cincinnati was also known as "Porkopolis"; this nickname came from the city's large pork interests. Newer nicknames such as "The 'Nati" are emerging and are attempted to be used in different cultural contexts. For example,

9086-518: The cold of the latter, the nitre by adding to its cold, but the salt by supplying activity to the cold of the snow." In 1758, Benjamin Franklin and John Hadley , a chemistry professor at the University of Cambridge , conducted experiments applying the principle of evaporation as a means to cool an object rapidly. Franklin and Hadley confirmed that the evaporation of highly volatile liquids (such as alcohol and ether ) could be used to drive down

9204-400: The compression. There are several ways to modulate the cooling capacity in refrigeration or air conditioning and heating systems . The most common in air conditioning are: on-off cycling, hot gas bypass, use or not of liquid injection, manifold configurations of multiple compressors, mechanical modulation (also called digital), and inverter technology. Hot gas bypass involves injecting

9322-640: The conventional 3-speed manual transmission. Packard's own automatic transmission , the Ultramatic , would not be ready until 1949. The final 180s rolled off the Packard assembly line in February 1942, as production restrictions of World War II brought a halt to civilian automobile production. There have been allegations that dies for both Junior and Senior models were sold to the Soviet Union during World War II, and production continued until 1959 as

9440-541: The dawn of the 2000s, Cincinnati's population stood at 331,285. The construction of Paul Brown Stadium (currently known as Paycor Stadium) in the year 2000 resulted from a sales tax increase in Hamilton County , as did the commencement of construction for Great American Ball Park , which later opened its doors in 2003. The city experienced the 2001 Cincinnati riots , causing an estimated $ 3.6 million in damage to businesses and $ 1.5–2 million in damage to

9558-682: The debate over competing against the American advantage of ice-refrigerated beef sales to the United Kingdom. Electricity made the development of effective units possible. In 1901, American inventor Willis H. Carrier built what is considered the first modern electrical air conditioning unit. In 1902, he installed his first air-conditioning system, in the Sackett-Wilhelms Lithographing & Publishing Company in Brooklyn, New York . His invention controlled both

9676-565: The evaporator and the condenser into the same air path; the air first passes over the evaporator coil, where it is cooled and dehumidified before passing over the condenser coil, where it is warmed again before it is released back into the room. Free cooling can sometimes be selected when the external air is cooler than the internal air. Therefore, the compressor does not need to be used, resulting in high cooling efficiencies for these times. This may also be combined with seasonal thermal energy storage . Some air conditioning systems can reverse

9794-492: The exclusive list. There were minor styling changes in the 1941 and 1942 models (19th and 20th series), the most notable of which were the moving of the headlamps into the fenders. Also for the first time, running boards could be deleted with a rocker panel put in their place to cover the chassis, and two-tone paint schemes were available. New for 1941 was the Electromatic Drive , a vacuum-operated clutch system for

9912-441: The first automobile manufacturer to offer an air conditioning unit in its cars in 1939. Innovations in the latter half of the 20th century allowed more ubiquitous air conditioner use. In 1945, Robert Sherman of Lynn, Massachusetts , invented a portable, in-window air conditioner that cooled, heated, humidified, dehumidified, and filtered the air. The first inverter air conditioners were released in 1980–1981. In 1954, Ned Cole,

10030-636: The first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric , where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan . In 1969, the first mini-split air conditioner was sold in the US. Multi-zone ductless systems were invented by Daikin in 1973, and variable refrigerant flow systems (which can be thought of as larger multi-split systems) were also invented by Daikin in 1982. Both were first sold in Japan. Variable refrigerant flow systems when compared with central plant cooling from an air handler , eliminate

10148-629: The founding of the settlement then known as "Losantiville", Arthur St. Clair , the governor of the Northwest Territory , changed its name to "Cincinnati", possibly at the suggestion of the surveyor Israel Ludlow , in honor of the Society of the Cincinnati . St. Clair was at the time president of the Society, made up of Continental Army officers of the Revolutionary War. The club was named for Lucius Quinctius Cincinnatus ,

10266-400: The gas. The gas enters at the suction side and moves through the threads as the screws rotate. The meshing rotors force the gas through the compressor, and the gas exits at the end of the screws. The working area is the inter-lobe volume between the male and female rotors. It is larger at the intake end, and decreases along the length of the rotors until the exhaust port. This change in volume is

10384-408: The heat pump is in heating mode, the indoor evaporator coil switches roles and becomes the condenser coil, producing heat. The outdoor condenser unit also switches roles to serve as the evaporator and discharges cold air (colder than the ambient outdoor air). Most air source heat pumps become less efficient in outdoor temperatures lower than 4 °C or 40 °F. This is partly because ice forms on

10502-400: The heat pump is used efficiently during milder temperatures, and the system is switched to the conventional heat source when the outdoor temperature is lower. The coefficient of performance (COP) of an air conditioning system is a ratio of useful heating or cooling provided to the work required. Higher COPs equate to lower operating costs. The COP usually exceeds 1; however, the exact value

10620-465: The liquefied ammonia was allowed to evaporate. In 1842, Florida physician John Gorrie used compressor technology to create ice, which he used to cool air for his patients in his hospital in Apalachicola, Florida . He hoped to eventually use his ice-making machine to regulate the temperature of buildings. He envisioned centralized air conditioning that could cool entire cities. Gorrie was granted

10738-474: The local Keep America Beautiful affiliate, Keep Cincinnati Beautiful, introduced the catchphrase "Don't Trash the 'Nati" in 1998 as part of a litter -prevention campaign. The city is undergoing significant changes due to new development and private investment. This includes buildings of the long-stalled Banks project that includes apartments, retail, restaurants, and offices, which will stretch from Great American Ball Park to Paycor Stadium . Phase 1A

10856-403: The most common type of individual room air conditioner: one designed to sit on a window ledge. The units went on sale in 1932 at US$ 10,000 to $ 50,000 (the equivalent of $ 200,000 to $ 1,100,000 in 2023.) A year later, the first air conditioning systems for cars were offered for sale. Chrysler Motors introduced the first practical semi-portable air conditioning unit in 1935, and Packard became

10974-617: The most expensive Model 2250 listed for $ 4,668 ($ 63,696 in 2023 dollars ) for the limousine, putting it in competition with the Cadillac Fleetwood Sixty Special, Lincoln Continental and Chrysler Imperial Crown. An all-new streamlined appearance, commonly called ponton , was offered by Packard, and the Series 22 Custom Super Eight replaced the Custom Super Clipper and was the top-level trim package sedan, limousine and convertible. The "free-flow" slab-sided appearance

11092-718: The nation’s premier air conditioning companies, builders, and social scientists. In addition, researchers from UT’s Health Service and Psychology Department studied the effects on the "artificially cooled humans." One of the more amusing discoveries was that each family reported being troubled with scorpions, the leading theory being that scorpions sought cool, shady places. Other reported changes in lifestyle were that mothers baked more, families ate heavier foods, and they were more apt to choose hot drinks. Air conditioner adoption tends to increase above around $ 10,000 annual household income in warmer areas. Global GDP growth explains around 85% of increased air condition adoption by 2050, while

11210-404: The need for large cool air ducts, air handlers, and chillers; instead cool refrigerant is transported through much smaller pipes to the indoor units in the spaces to be conditioned, thus allowing for less space above dropped ceilings and a lower structural impact, while also allowing for more individual and independent temperature control of spaces. The outdoor and indoor units can be spread across

11328-430: The outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to the condenser coil, to heat up and defrost. Therefore, some heat pump systems will have electric resistance heating in the indoor air path that is activated only in this mode to compensate for

11446-569: The population has begun recovering: the 2020 census reports a population of 309,317, representing a 4.2% increase from 296,943 in 2010. This marked the first increase in population recorded since the 1950 Census, reversing a 60-year trend of population decline. At the 2020 census, there were 309,317 people, 138,696 households, and 62,319 families residing in the city. The population density was 3,809.9 inhabitants per square mile (1,471.0/km ). There were 161,095 housing units at an average density of 2,066.9 per square mile (798.0/km ). The racial makeup of

11564-498: The remaining 15% can be explained by climate change . As of 2016 an estimated 1.6 billion air conditioning units were used worldwide, with over half of them in China and USA , and a total cooling capacity of 11,675 gigawatts. The International Energy Agency predicted in 2018 that the number of air conditioning units would grow to around 4 billion units by 2050 and that the total cooling capacity would grow to around 23,000 GW, with

11682-418: The same period. However, it received a significant number of German-speaking immigrants , who founded many of the city's cultural institutions. It later developed an industrialized economy in manufacturing. Many structures in the urban core have remained intact for 200 years; in the late 1800s, Cincinnati was commonly referred to as the " Paris of America" due mainly to ambitious architectural projects such as

11800-415: The spaces to be cooled which then duct or deliver cold air into the spaces to be conditioned, rather than ducting cold air directly to these spaces from the plant, which is not done due to the low density and heat capacity of air, which would require impractically large ducts. The chilled water is cooled by chillers in the plant, which uses a refrigeration cycle to cool water, often transferring its heat to

11918-461: The standard Clipper passenger compartment body with front fender and hood extensions to accommodate the longer wheelbase, and the model identification was inscribed below the front door vent window. Optional equipment included a heater, AM-radio, rear wheel fender skirts, Electromagnetic Clutch, full-wheel covers and white sidewall discs that complemented the 15" wheels. A total of 1,472 Custom Super Clippers were manufactured for 1946, 5,690 for 1947 with

12036-427: The surrounding air. An air conditioner designed for an occupied space will typically achieve a 30% to 60% relative humidity in the occupied space. Most modern air-conditioning systems feature a dehumidification cycle during which the compressor runs. At the same time, the fan is slowed to reduce the evaporator temperature and condense more water. A dehumidifier uses the same refrigeration cycle but incorporates both

12154-399: The system to provide the peak cooling capacity. Each compressor can run or not in order to stage the cooling capacity of the unit. The turn down capacity is either 0/33/66 or 100% for a trio configuration and either 0/50 or 100% for a tandem. Cincinnati Cincinnati ( / ˌ s ɪ n s ɪ ˈ n æ t i / SIN -si- NAT -ee ; nicknamed Cincy ) is a city in and

12272-412: The temperature and humidity, which helped maintain consistent paper dimensions and ink alignment at the printing plant. Later, together with six other employees, Carrier formed The Carrier Air Conditioning Company of America , a business that in 2020 employed 53,000 people and was valued at $ 18.6 billion. In 1906, Stuart W. Cramer of Charlotte, North Carolina , was exploring ways to add moisture to

12390-437: The temperature of an object past the freezing point of water. They experimented with the bulb of a mercury-in-glass thermometer as their object. They used a bellows to speed up the evaporation . They lowered the temperature of the thermometer bulb down to −14 °C (7 °F) while the ambient temperature was 18 °C (64 °F). Franklin noted that soon after they passed the freezing point of water 0 °C (32 °F),

12508-405: The temporary indoor air cooling, which would otherwise be uncomfortable in the winter. Newer models have improved cold-weather performance, with efficient heating capacity down to −14 °F (−26 °C). However, there is always a chance that the humidity that condenses on the heat exchanger of the outdoor unit could freeze, even in models that have improved cold-weather performance, requiring

12626-646: The term and incorporated it into the name of his company. Domestic air conditioning soon took off. In 1914, the first domestic air conditioning was installed in Minneapolis in the home of Charles Gilbert Gates . It is, however, possible that the considerable device (c. 2.1 m × 1.8 m × 6.1 m; 7 ft × 6 ft × 20 ft) was never used, as the house remained uninhabited (Gates had already died in October 1913.) In 1931, H.H. Schultz and J.Q. Sherman developed what would become

12744-471: The time, employers struggled to hire enough people to fill positions. The city had a labor shortage until large waves of immigration by Irish and Germans in the late 1840s. The city grew rapidly over the next two decades, reaching 115,000 people by 1850. During this period of rapid expansion and prominence, residents of Cincinnati began referring to the city as the Queen City. Cincinnati's location, on

12862-616: The top of Mount Auburn that year.   In 1889, the Cincinnati streetcar system began converting its horse-drawn cars to electric streetcars . The Second Annual Meeting of the Woman's Christian Temperance Union was held in Cincinnati in November 1875. In 1880, the city government completed the Cincinnati Southern Railway to Chattanooga, Tennessee . It was the only municipally-owned interstate railway in

12980-551: The war. This was much fewer than planned. Building even this number of cars would have overstretched Darrin's Hollywood workshops so they were built by American Central Manufacturing - one of the last remnants of the Auburn-Cord-Duesenberg conglomerate - in Connersville ("Little Detroit") Indiana instead. Darrin would travel back and forth between California and Indiana supervising construction. This work

13098-494: The warmer months, and tornadoes , while infrequent, are not unknown, with such events striking the Metro Cincinnati area most recently in 1974, 1999, 2012, and 2017. See or edit raw graph data . In 1950, Cincinnati reached its peak population of 503,998; thereafter, it lost population in every census count from 1960 to 2010. In the late 20th century, industrial restructuring caused a loss of jobs. More recently,

13216-537: The water in a bucket or tray and stops when full. The air-to-air type re-evaporates the water, discharges it through the ducted hose, and can run continuously. Many but not all portable units draw indoor air and expel it outdoors through a single duct, negatively impacting their overall cooling efficiency. Many portable air conditioners come with heat as well as a dehumidification function. The packaged terminal air conditioner (PTAC), through-the-wall, and window air conditioners are similar. These units are installed on

13334-633: The yearly 42.5 inches (1,080 mm) of precipitation, with rainfall peaking in spring. Extremes range from −25 °F (−32 °C) on January 18, 1977, up to 108 °F (42 °C) on July 21 and 22, 1934. While snow in Cincinnati is not as intense as many of the cities located closer to the Great Lakes, there have been notable cases of severe snowfall, including the Great Blizzard of 1978 , and more notable snowstorms in 1994, 1999 , 2007 , and 2021 . Severe thunderstorms are common in

13452-423: Was also important. The first established Methodist class in the Northwest Territory came 1797 to nearby Milford . By 1879, there were 162 documented church edifices in the city. For this reason, from the beginning, Protestantism has played a formative role in the Cincinnati ethos. Christ Church Cathedral continues the legacy of the early Anglican leaders of Cincinnati, noted by historical associations as being

13570-617: Was incorporated as a city on March 1, 1819. Exporting pork products and hay, it became a center of pork processing in the region. From 1810 to 1830, the city's population nearly tripled, from 9,642 to 24,831. Construction on the Miami and Erie Canal began on July 21, 1825, when it was called the Miami Canal, related to its origin at the Great Miami River . The first section of the canal was opened for business in 1827. In 1827,

13688-681: Was introduced, intended to evoke the popular appearance from Packards of the 1930s. The 2-door Club Sedan was joined with the first convertible offered since 1942, called the Victoria Convertible Model 2259, and was available with the Super and Custom Super trim packages. Custom Super trim packages could be identified by having two stainless steel body trim at the bottom edge of the body, while Super trim did not have them after 1949. Air conditioning Air conditioning , often abbreviated as A/C (US) or air con (UK),

13806-550: Was shared with all Packards and senior trim levels could be distinguished with an egg-crate grille, and horizontal bars below the traditional "ox-yoke" grille that wrapped around to the front wheel opening. The overall appearance was distinctive, with Packard winning several awards for the design, including the "Fashion Car of the Year" from the New York Fashion Academy . The "Winged Goddess" cormorant hood ornament

13924-522: Was shifted to Sayers & Scovill in Cincinnati (the company became Hess & Eisenhardt in 1942) to let ACM concentrate on building Jeep bodies. Between 59 and 72 Packard Darrins were built in 1940, of which 44 (or 48) were One-Eighties and the remainder One-Twenties . For the 1941 and 1942 model years the four-door Darrins were discontinued, leaving only the Convertible Victoria. When production returned for civilian use October 1945,

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