Marine Refrigeration System Working Principle

The refrigeration system comprises of various components like freon gas compressor condenser evaporator thermostat etc which are all enclosed in a casing.

Marine refrigeration system working principle.

The compressor is the mechanical heart of a refrigeration system. Basic refrigeration system fundamentals the compression cycle. The most commonly used refrigeration machines are the household refrigerator and deep freezer though these machines are available in many other forms. In reefer ships the temperature of the perishable or temperature sensitive cargo such as food chemical or liquefied gas is controlled by the refrigeration plant of the ship.

The basic components of any refrigeration system working on the vapour compression cycle are the compressor condenser expansion valve evaporator and the refrigerant fluid which is alternatively vapourized and liquefied during the refrigeration cycle. The pressure temperature relationship is an important principle for refrigeration. The working principle of a refrigerator and refrigeration in general is very simple. At 5 000 feet water boils at 202 f.

This guide describes the principle and working of marine refrigeration system along with the important components and refrigerants used. Freon gas or the refrigerant absorbs heat inside the area to be cooled in the evaporator unit and transfers that heat to the refrigerator s condenser at exterior. The compressor serves two functions. It causes refrigerant to flow and is where energy is applied to perform the work of removing heat in the evaporator.

Systems designed for the cooling of refrigerated containers employ trunkings arranged so that containers stowed in stacks between built in guide rails can be connected to the suction and delivery air ducts of the ship s refrigeration plant by bellows pieces operated. For example at sea level water boils at 212 f. Individual containers with their own refrigeration plant are connected to the 440 or 220 a c. Refrigeration basic principle applies on all system whether it s the smallest water cooler to largest walk in freezer that ever built.

When you pass a low temperature liquid close to objects that you want to cool heat from those objects is transferred to the liquid which evaporates and takes away the heat in. The refrigeration plants on merchant vessels play a vital part in carrying refrigerated cargo and provisions for the crew on board. As pressure decreases the change of state temperature also decreases. This principle is applied in the refrigeration system.