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SeaMach™ Operation General Operation The SeaMach reverse cycle air conditioning has both a heating and cooling mode of operation. It uses R-22 or R-407C refrigerant in a conventional vapour compression cycle to transfer heat from the air in the boat to the water. In the cooling mode, a blower blows air through the indoor or evaporator coil. Liquid refrigerant passing through the evaporator is boiled into a gas by heat removed from the air. The warmed refrigerant gas travels to the water coil or condenser where it is cooled by the water and condenses to a liquid. Liquid refrigerant is metered back into the evaporator coil to repeat the cycle. In the heating mode, the process is reversed. A special reversing valve reverses the flow of the refrigerant throughout the system exchanging the roles of the condenser and evaporator. The refrigerant flows through the water or evaporator coil, picks up heat from the water and becomes a vapour. The vapour then enters the compressor where it is compressed to a higher temperature. It is then pumped to the indoor coil where the air moving across the coil picks up the heat and is blown into the room. The compressed refrigerant vapour condenses into a liquid as it gives up heat. Finally, liquid refrigerant flows into the capillary tubes into the indoor coil where the cycle is repeated. |