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30/01/2016

The condensed and pressurized liquid refrigerant is next routed through an expansion valve where it undergoes an abrupt reduction in pressure. That pressure reduction results in flash ev***ration of a part of the liquid refrigerant, lowering its temperature. The cold refrigerant is then routed through the ev***rator. A fan blows the warm air (which is to be cooled) across the ev***rator, causing the liquid part of the cold refrigerant mixture to ev***rate as well, further lowering the temperature. The warm air is therefore cooled.

To complete the refrigeration cycle, the refrigerant v***r is routed back into the compressor.

By placing the condenser inside a compartment, and the ev***rator in the ambient environment (such as outside), or by merely running an air conditioner's refrigerant in the opposite direction, the overall effect is the opposite, and the compartment is heated instead of cooled.

30/01/2016

In the refrigeration cycle, heat is transported from a colder location to a hotter area. As heat would naturally flow in the opposite direction, work is required to achieve this. A refrigerator is an example of such a system, as it transports the heat out of the interior and into its environment (i.e., the room). The refrigerant is used as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere.

Circulating refrigerant v***r enters the compressor and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed refrigerant v***r is now at a temperature and pressure at which it can be condensed and is routed through a condenser. Here it is cooled by air flowing across the condenser coils and condensed into a liquid. Thus, the circulating refrigerant removes heat from the system and the heat is carried away by the air.