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Heat Rejection and Cooling topics include: Heat rejection, engine heat transfer and cooling systems, liquid cooling systems and air cooled systems.
Heat rejection is the process of transferring heat energy from a cool side to a warm side, plus the work done by the compressor. A cooling system transfers energy from a cool side to a warm side, along with the power needed to transfer the energy.
Heat rejection can be achieved in several ways, including: Air cooled: Air passes over a coil or channel containing fluid, transferring heat from the coil to the air. Water cooled: A spray system passes water over coils or fill media to reject heat to the atmosphere through evaporation. Evaporative condenser: Water is sprayed over tubing in which refrigerant condenses. Airflow across the tubing evaporates some of the water, causing the water and the tubes to be cooled. Cooling tower: The type of heat rejection in a cooling tower is called "evaporative" because it allows a small amount of the water to evaporate into a moving air stream. This evaporation cools the rest of the water stream.
Heat rejection can also be achieved through mechanical or natural ventilation to reject excess heat to the outside
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