The objective of any refrigeration system is to collect heat from a low temperature area and move it to a high temperature area. Refrigerant is a substance that acts as a cooling agent by absorbing and giving off heat. Usually there are two types of refrigeration systems commonly encountered : namely the vapor compression cycle refrigeration system and the vapor absorption cycle refrigeration system. The most common system that is used on all ships is the vapor compression cycle refrigeration system.
Onboard ship refrigeration systems are used in the carriage of some liquefied gases and bulk chemicals, air conditioning for accommodations, to cool the bulk carbon dioxide for firefighting systems, to preserve perishable foodstuff during storage, and to preserve stores on ships like fish, meat, vegetables, and dairy products. It is required to maintain the temperature of the above items within desired limits throughout the voyage, so the refrigeration system will be running throughout the voyage, which may lead to various problems during its operation.
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