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83-603: Aside from domestic use, ST Kinetics has been marketing the Bionix to countries that wish to retire their old M113s from front-line service. With the growth and development of the Singapore Armed Forces (SAF) during the mid 1980s came a need to bolster of the existing fleet of M113 Armored Personnel Carriers . This prompted the Ministry of defence to source for a fleet of armored vehicles to operate in tandem with

166-420: 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

249-501: 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

332-534: 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

415-570: 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

498-605: A Warrior IFV in Helmand . Upgrades already fitted to Warriors in British Army service included the Bowman Communications System and Thales Battle Group Thermal Imaging (BGTI) night sights. However the British Army determined that a bigger upgrade programme was required to extend its service life to 2040. The Warrior Capability Sustainment Programme (WCSP) was to involve upgrading 380 Warriors with

581-405: 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

664-593: A cost of £1bn, extending the service life of the Warrior to 2040 and beyond. The scheduled in-service date for upgraded Warriors was 2018. Under the WFLI programme, the existing turret including the unstabilised Rarden gun, would be replaced by a turret mounting a stabilised 40 mm weapon developed by the Anglo-French firm CTA International and firing Cased telescoped ammunition . This weapon would also equip

747-422: 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,

830-654: 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

913-778: 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

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996-468: A maximum range of 1,500 m (1,600 yd), and an L94A1 EX-34 7.62 mm Hughes Helicopters coaxial chain gun. It is fitted with two clusters of four defensive grenade launchers (usually used with Visual and Infrared Screening Smoke – VIRSS). All Warrior Infantry Section Vehicles are now equipped with Bowman radios, which replaced the earlier Clansman radios, for enhanced communications, command and control. When first introduced,

1079-456: 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

1162-425: 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

1245-405: 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

1328-415: A roof hatch that opens to the left rear. When driving closed-down, observation is via three day periscopes, while the center periscope can be rapidly replaced by an image-intensification periscope for driving at night. The driver guides the vehicle using a small steering wheel rather than tillers and, as an automatic transmission is fitted, there are just two pedals - accelerator and brake. The instrument panel

1411-460: 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

1494-438: 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

1577-445: A supplementary manual back up. The layout of the Bionix is conventional with the driver at the front left, the power pack situated at the front right and the turret in the center with the troop compartment at the rear. Access to the troop compartment at the rear of the vehicle is by a power-operated ramp, which can operate as an emergency access and exit door. A single hatch is installed over the troop compartment. The driver enters via

1660-541: 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

1743-772: A winch and crane attachments. The ABSV was however, removed in Annual Budget Cycle 16 as a cost saving. In an oral evidence on 20 October 2020, with the Deputy Chief of the General Staff Lieutenant General Christopher Tickell stating it would be in service by 2030, aiming to replace the FV430 Bulldog . BAE Systems and Lockheed Martin competed for the WCSP contracts. Lockheed Martin's WFLIP upgrade

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1826-424: 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

1909-486: Is a compact design produced to meet the conditions of Pacific rim countries where small size is a great asset when it comes to travelling among rubber plantations and over roads and bridges not designed for heavy vehicles. The power provided by the 475 hp (354 kW) Detroit Diesel engine to drive its 23 tonnes, ensures the Bionix is able to overcome the most difficult terrain. Future upgrades in power ratings can be developed according to needs. The integrated power pack

1992-575: Is a series of British armoured vehicles, originally developed to replace FV430 series armoured vehicles. The Warrior started life as the MCV-80 , "Mechanised Combat Vehicle for the 1980s". One of the requirements of the new vehicle was a top speed able to keep up with the projected new MBT, the MBT-80  – later cancelled and replaced by what became the Challenger 1  – which

2075-443: Is driven by a Perkins - Rolls-Royce V8 Condor engine through a four-speed automatic gearbox. It is capable of a road speed of 46 miles per hour (74 km/h). The Warrior has the speed and performance to keep up with a Challenger 2 main battle tank over the most difficult terrain. The vehicle is fitted with a two-man GKN Sankey turret, armed with a non- stabilised L21A1 30 mm RARDEN cannon capable of destroying some APCs at

2158-407: 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

2241-417: Is mounted on the left, with the transmission selection box on the right. In the turret, the gunner's station is on the right and the commander's station is on the left, each with a single hatch cover. The turret traverses through 360°. Traverse and weapon elevation is by all-electric digital control. Both the gunner and commander have a turret stop button and are able to lay and fire the weapons. The gunner has

2324-505: Is mounted to the right of the vehicle and can be removed from the Bionix as a complete unit in under 15 minutes. The engine is coupled to the L-3 Combat Propulsion Systems HMPT-500EC fully hydro mechanical transmission, with the final drives being provided by David Brown Defence Systems . The engine compartment is also fitted with an automatic fire detection and dry-powder fire suppression system with

2407-503: 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

2490-469: 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

2573-408: 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

Bionix AFV - Misplaced Pages Continue

2656-607: The Ajax armoured vehicle. By March 2020 Warrior CSP was in the "demonstration phase", demonstrating capability for a range of military missions set by the MoD. A total of £430m had been spent so far. No in-service date had been set, but the demonstration phase was due to finish in 2021. In June 2020 the House of Commons Defence Select Committee described the project as running over three years late and £227 million over budget. In March 2021

2739-511: The Bionix II , which entered a trial service with the Singapore Armed Forces in 2005 with a Company from 41 SAR. In October 2006, The Bionix II was declared operationally ready with 42 SAR being the first fully equipped Bionix II battalion. The hull and turret are of all-welded-steel construction with modular MEXAS passive armour protection. Additional armour protection can be installed with an add-on layer of spaced passive armour. The Bionix

2822-692: The FV432 armoured personnel carrier could not. The project was begun in 1972; GKN Defence won the production contract in 1984 and the Warrior was accepted for service with the British Army in November 1984. Production commenced in January 1986 at Telford , with the first vehicles completed in December that year. GKN Defence was purchased by BAE Systems , via Alvis plc . The first production vehicle

2905-518: 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

2988-553: The Schützenpanzer Marder were evaluated. The findings from the market survey showed that none of the off-the-shelf vehicles met the specific requirements of the SAF. Therefore, the decision was made to develop a vehicle locally. Local development was necessary not only because of a lack of suitable off-the-shelf designs, but also as an opportunity to build up the capability of the local defense industry. Known as "BIONIX",

3071-534: 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

3154-400: 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

3237-442: The 25mm cannon and 7.62mm coaxial machine gun. The commander has an optical relay from the gunner's sight and a single control handle. The vehicle commander has a further five day periscopes to give observation to the turret front, left side and rear; the gunner has three periscopes (1 x M17 and 2 x L794D) to give observation to the right and rear. Warrior Tracked Armoured Vehicle The FV510 Warrior tracked vehicle family

3320-551: The Bionix began in 1988. It took several years before leaving the prototyping phase in 1995 and finally being commissioned on 26 March 1997. ST Automotive was awarded a S$ 2.5 billion (US$ 1.7 billion) contract in March 1997 to supply several hundred Bionix IFVs to the Singapore Armed Forces. The first production vehicles were inducted by the 42nd Battalion, Singapore Armoured Regiment in July 1999. The Bionix IFV has since been succeeded by

3403-500: 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

Bionix AFV - Misplaced Pages Continue

3486-531: The IFV was the product of a tripartite team of engineers and technical staff from Singapore Technologies Automotive, DMO and G5 Army, working jointly with HQ Armour to produce a fighting machine tailored to the specific operational requirements of the Army . Key considerations during the design process included high mobility and agility, low weight, amphibious capability, and adequate protection and firepower. Development of

3569-605: The MoD announced that the CSP had been cancelled and that all of the British Army's Warrior vehicles would be replaced by the middle of the decade with Boxer armoured fighting vehicles . In April 2021 Lockheed Martin announced that as a result up to 158 jobs would be lost at Ampthill. It had previously been reported in October 2020 that the UK may procure Boxer vehicles that are fitted with the 40mm CTA International CT40 cannon . Following

3652-406: The UK's battlefield experience. In particular, there are no firing ports in the hull, in line with British thinking that the role of the armoured personnel carrier / infantry fighting vehicle (APC/IFV) is to carry troops under protection to the objective and then give firepower support when they have disembarked. The absence of firing ports also allows appliqué armour to be fitted to the sides of

3735-754: The UN operations in Bosnia . Two Warriors were destroyed during the First Gulf War , with nine soldiers killed, in a friendly fire incident when hit by AGM-65 Maverick missiles launched in error by two American Fairchild Republic A-10 Thunderbolt II ground attack aircraft. As of 17 November 2008, 22 soldiers had been killed while travelling in Warrior IFVs in Afghanistan or Iraq. On 7 March 2012, six British soldiers were killed in an explosion that hit

3818-639: The Warrior Modular Protection System (WMPS) and Warrior Enhanced Electronic Architecture (WEEA). Within that group, 245 vehicles would have been fitted with a new turret and weapon system under the Warrior Fightability Lethality Improvement Programme (WFLIP). The remainder, which would have been designated as Armoured Battlefield Support Vehicles (ABSV), would have lacked turrets and carry out field repair and recovery roles using

3901-410: 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

3984-400: 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

4067-441: 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

4150-440: 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

4233-617: 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

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4316-626: 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

4399-416: 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

4482-669: The cancellation of the CSP Leicestershire-based Digital Concepts Engineering has proposed a system to stabilise the Warrior’s 30mm Rarden cannon, allowing the vehicle to fire on the move. The upgrade would additionally provide a digital turret interface facilitating the addition of a vehicle battle management system and ‘slew to cue’ capability to reduce the cognitive burden on the gunner. Air conditioning Air conditioning , often abbreviated as A/C (US) or air con (UK),

4565-518: 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

4648-400: 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

4731-659: The current fleet of AMX-13/AMX-13 SM1 light tank. With the participation of the SAF, the Defence Materiel Organisation , MINDEF's systems acquisition house, was appointed to conduct a technology study and recommend the direction for the project. A market survey was conducted in which various armored vehicles including the Warrior Tracked Armoured Vehicle , the M2/M3 Bradley Fighting Vehicle , and

4814-738: 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

4897-565: 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

4980-441: 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,

5063-636: 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

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5146-400: 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

5229-408: 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

5312-400: 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

5395-465: 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

5478-403: 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

5561-718: 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

5644-404: 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

5727-430: 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

5810-482: The rear hull compartment. Passenger access is through an electric ram powered door at the rear of the hull, rather than a drop-down ramp as in the US M113 APC and M2 Bradley IFV. Warrior Section Vehicles are able to carry seven fully equipped soldiers together with supplies and weapons, including a number of anti-tank weapons, for a 48-hour battlefield day in nuclear/biological/chemical conditions. The Warrior

5893-498: 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

5976-415: 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

6059-427: 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

6142-412: 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

6225-437: 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),

6308-405: 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

6391-591: 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

6474-456: The turret control box mounted to the right of his position and both turret-crew members have an adjustable seat. The communications equipment is installed in the turret bustle. The basic production models lacks an in-built air conditioning and NBC protection system , but can be fitted if/when needed. The gunner has a twin-control handles and a day/thermal sight, with a magnification of x8 and two fields of view (high and low), with stadias for

6557-459: The vehicle, which is invariably applied to Warriors on operations. The cage armour used at one stage was replaced in 2007 by "Wrap Two" appliqué armour. The basic armour provides all-around protection against small arms ball ammunition. The crew of a Warrior comprises the driver, seated in the front hull and the gunner and commander in the turret. The embarked infantry section can number up to seven soldiers, who are seated facing each other in

6640-408: The vehicles were fitted with passive image intensifier night vision sights. These have since been replaced with Thales Optronics Battle Group Thermal Imaging (BGTI) sights to upgrade night fighting capabilities, with 8× magnification. As of 2007, 350 vehicles were fitted with BGTI. The protection against small arms , missiles , rocket-propelled grenades and anti-tank mines was shown during

6723-537: 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

6806-506: Was based on the existing Warrior turret. BAE Systems designed a new turret. In March 2011, it was announced that Lockheed Martin had effectively won the competition to develop both the WFLIP and the FRES turrets. Severe budgetary pressures made it uncertain whether these defence projects were to be delayed or curtailed, but it was announced in October 2011 that the Warrior upgrades would proceed at

6889-607: Was handed over to the British Army in May 1987 to 1st Battalion Grenadier Guards and from 1988 to 1990 four more armoured infantry battalions in the British Army of the Rhine were converted to the new vehicle. A total of 789 FV510 and variants were manufactured for the British Army and 254 of a modified version ( Desert Warrior ) were produced for the Kuwaiti Army . The Warrior incorporates several design features in keeping with

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