Marine Refrigeration System Working Principle

At 5 000 feet water boils at 202 f.

Marine refrigeration system working principle.

It causes refrigerant to flow and is where energy is applied to perform the work of removing heat in the evaporator. The refrigeration plants on merchant vessels play a vital part in carrying refrigerated cargo and provisions for the crew on board. The working principle of a refrigerator and refrigeration in general is very simple. Basic refrigeration system fundamentals the compression cycle.

This guide describes the principle and working of marine refrigeration system along with the important components and refrigerants used. For example at sea level water boils at 212 f. 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. Refrigeration basic principle applies on all system whether it s the smallest water cooler to largest walk in freezer that ever built.

It involves the removal of heat from one region and its deposition to another. 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. This principle is applied in the refrigeration system. The compressor is the mechanical heart of a refrigeration system.

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. As pressure decreases the change of state temperature also decreases. 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. Individual containers with their own refrigeration plant are connected to the 440 or 220 a c.

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. Sockets provided on deck. The compressor serves two functions. Understanding the basics is the key to properly plan the maintenance and troubleshoot the marine refrigeration system.