![]() Theoretically, almost any liquid can be used as a refrigerant if its pressure/temperature relationship is suitable for the conditions. All refrigerants using on board might be sub-divided into primary and secondary refrigerants. In all refrigeration, heat is collected in a suitable fluid and this fluid is removed from the space substance being cooled carrying the heat with it. Modern Shell and tube type condensers.Various refrigerant types, refrigerant flow control valves & Ancillary fittings etc. The use of fresh water from a central cooling system closed circuit, avoidsĬentrifugal,reciprocating, or screw compressors. Pipe is fitted between the condenser and the galvanized steel pipe system. ![]() Of the condensers is common and sometimes a short length of ungalvanized The use of sacrificial anodes in the water ends Tube plates, with ferrous metal being in contact with the refrigerant, and Has been found necessary to use stainless steel or even bimetallic tubes and clad Refrigerant 717 (ammonia) tends to corrode these materials however, and it Plates is acceptable and has reduced the rate of corrosion on the sea-water side. Refrigerants, the use of aluminium brass or cupro-nickel tubes and brass tube Marine condensers are very susceptible to corrosion and much research hasīeen done to lengthen their useful life. Water velocity is restricted to prevent erosion of the tubes, usually being kept Number of short circuits may be used, to keep pressure drop to a minimum. The design of condensers is largely dictated by the quantityĪnd cost of the circulating water, and, where water is plentiful as at sea, a large
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