Ship refrigeration unit condenser SPR

Shell and tube condensers, SPR and SPRZ type, are designed for condensing refrigerant vapors in refrigeration units, and the SPRZ tank condensers are additionally used to store the liquid refrigerant. The condensers consist of a body, buddle of low-finned tubes, expanded in tube sheets and water covers. The cooling water flows in the tubes, while the cooling agent condenses in the inter-wall space on their outer surface. Removable covers direct the flow of water on both sides of the condenser, they are equipped with inlet and outlet connectors for water. That construction allows mechanical cleaning of tubes of impurities. Water covers are protected against corrosion by polyamide layer, which is characterized by good tightness, durability and abrasion resistance as well as low coefficient of friction in relation to water. Thanks to covering the water cover with polyamide, effective protection against electrolytic corrosion is obtained, which can occur at the contact of various metals in the sea water environment. In the reservoir version of the condensers (type SPRZ), are designed to condense and storage refrigerants. In the lower part of the shell of SPRZ type are located two sight glasses allowing observation of the level of the refrigerant inside the condenser. Condensers can ba built of low finned tubes made of copper (fresh water cooled), cupronickel or brass (sea water cooled). Condensers are constructed and approved according to requirements of Classification Bodies: DNV / GL, LRS, BV, RMRS, RINA, ABS, PRS and also UDT or TUV.