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Sustainable automotive air conditioning is the subject of a debate – also known as the Cool War – about the next-generation refrigerant in car air conditioning. An advocacy group, The Alliance for CO 2 Solutions , supports the uptake of carbon dioxide (CO 2 ) as a refrigerant in passenger cars, and the chemical industry is developing new ...
A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.
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. [61]
In an air conditioner, however, the air passes over the cold evaporator coils and then directly into the room. It is not re-heated by passing over the condenser, as in a refrigeration dehumidifier. Instead, the refrigerant is pumped by the compressor to a condenser which is located outside the room to be conditioned, and the heat is then ...
The hybrid approach is designed to eliminate general shortcomings of other technologies. For example, hybrids are activated by either thermostat (similar to tanked) or flow (similar to tankless). Hybrids have small storage tanks that temper incoming cold water.
The engine they designed and developed kept the Turbo-Air 6 engine's boxer configuration and use of air cooling, and became known as the modular engine. As with Winchell's earlier engine, bore and stroke were increased to 3.56 in (90.4 mm) and 2.94 in (74.7 mm) respectively. [ 29 ]