Vapor compression cycle, also known as vapour compression cycle, is a simple yet effective method of air conditioning. This type of cooling system utilizes a high-pressure pump that releases freezing water vapour into the room, in much the same way that compressed air is released through a pressure canister. The vapor is condensed and stored in pipes or tubes connected to the condenser coils of the machine. These pipes or tubes are then connected to an evaporator, where cold water vapour enters into a condenser, while hot vapour exits the condenser. Thus, the system circulates vapour in a closed cycle.
Vapour compression cooling or superheating in vapour compression cycle, by which the refrigerant experiences phase changes, is among the several common refrigeration systems and is the most frequently used method for cooling of commercial buildings and vehicles. These cycles are ideal for small to medium-sized production facilities, where high-pressure chillers are not suitable. The term "vapour compression" refers to the compression of air in order to release the chilled liquid refrigerant gas. A small amount of heat is also released by the process, although it is a very small amount. The process can be used to cool any liquid, from Freon to water.
The vapour compression cycle is ideally suited for use with existing large scale industrial chillers, which are generally cooled by the use of high pressure water jets. The principle behind the operation of this cooling process is to utilise the principles of condensation and evaporation. An excellent choice for industrial chillers would be the bromine cooled bromine. The bromine, a non-flammable, nontoxic chemical compound, is very effective in absorbing heat energy and in conduction of cold heat.
Bromine cooled bromine is a more efficient choice for a refrigeration system than the traditional cryogenic chillers. It is also more cost-effective than the other available cooling sources. The heat pump is a special type of heating element used as an alternative to conventional refrigeration systems. This combination of elements is extremely efficient and very convenient. The heat pump uses a fan, usually a scroll fan, to convey the warmed air into the room. This combined with the air chillers working at the same time results in excellent cold temperatures throughout the room.
The principle of the vapour compression cycle is based on the principles that the hotter air enters the condensing refrigerant, while the colder air is forced out. The principle of evaporation, however, does not lend itself well to situations where the incoming air is already saturated with moisture. As soon as the heated air enters the condensing refrigerant, evaporation immediately occurs, thus removing most of the moisture from the incoming air. Cold air enters the condensing refrigerant casing and moves through an additional passageway to escape into the atmosphere once it has warmed up sufficiently. This cold air is therefore pushed out into the room in the form of cold mist into the evaporator coils.
This process is then reversed to send the heated vapour into the expansion stage. The vapour is now in a condition to expand and once this stage has been reached it will be extracted through the vents. The evaporation and expansion of the liquid vapour are what creates the first phase of condensation. The liquid condensation is what ultimately cools the air that passes through the vents in the vapour compression cycle. Once this has occurred, the system is in a stationary position. Get a general overview of the topic here: https://en.wikipedia.org/wiki/Heat_pump_and_refrigeration_cycle .