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Supermarket refrigerated showcase Water and air combined cooling condenser
author: supermarket refrigerated showcase category: commercial refrigeration Views: 576Time: 2016-08-22
Supermarket refrigerated showcase Combined cooling condenser
Supermarket refrigerated showcase Water and air combined cooling condenser Condensers using water and air combined cooling methods include water-drenching condensers And evaporative condensers. In these two types of condensers, the refrigerant is condensed inside the tube, and cooling water is sprayed outside the heat transfer tube. In the water spray type, most of the heat released by the refrigerant is taken away by the natural convection of the air, and a small amount of heat is taken away by the vaporization of water. In the evaporative type, the heat released by the refrigerant in the supermarket refrigerated showcase is mainly taken away by the vaporization of water. The vapor generated during vaporization is taken away by the forced air, and a small part of the heat is transferred to the water film on the outer wall of the tube through the tube wall. , Transmitted to the air by the water film. The heat transfer tubes are all smooth steel tubes.
1) Water-drenching condenser
Water-drenching condenser is also called showering condenser. It is divided into two types according to the arrangement of the heat transfer tubes: one is a serpentine tube group made of seamless steel pipes, called horizontal Tube water-drenching condenser, generally referred to as water-drenching condenser: the other is assembled by bending seamless steel pipe into a spiral tube, called spiral-tube watering condenser. The horizontal tube water spray condenser is that the cooling water flows from the upper water distribution box into the water tank, flows down evenly through the zigzag overflow of the water tank, pours it on the outer surface of the cooling tube group, and finally flows into the pool. The refrigerant vapor enters the cooling tube group from the lower part, and the refrigerant liquid condensed in the tube is exported from the branch pipe at one end of the cooling tube, and then flows into the accumulator through the main pipe. Water spray supermarket refrigerated showcase condensers are generally used in ammonia refrigeration plants. The water-drenching condenser is simple in structure, easy to manufacture, and convenient to clean. However, it covers a large area and the cooling effect is easily affected by climatic conditions. It is generally installed on the roof or special buildings. The spiral tube water spray condenser can reduce the welding workload and save processing man-hours. After testing, its heat transfer effect is equivalent to that of the horizontal tube water spray condenser.
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