Hang Zhou Dawn Air Conditioning Co .,Ltd.

Cooling air discharge tube is used to cool an evaporator. Widely used in cold storage library, the refrigerant discharge pipe in the cooling flow and evaporation, heat transfer medium outside the tube is cooled as air for natural convection.
Cooling discharge tubes of the biggest advantages of simple structure, easy production, storage of the Treasury caused by the non-packaged foods consumed less dry. However, the lower row of the heat transfer coefficient, and the operational difficulties when defrosting is not conducive to automation. Ammonia cooling system for seamless steel tubes welded directly to the system, using fluorescent tubes or wound finned tube; the freon system, the most used around the set-piece brass plates or finned tube group.
1, row tube snake tube
Gravity Pipe snake pipe for fluid or liquid ammonia pump for both; single row and double row of tube snake tube wall can be used under a type of ammonia into the fluid supply system and the gravity pump fluid supply system, on a single row of the snake tube ammonia pump tube can be used to make progress under the fluid supply system and the thermal expansion valve for fluid systems.
Row tube snake tube has the advantage of simple structure, easy production, storage solution was smaller, and applicability. The main drawback is the lower row of pipe steam extraction can not be timely, must be ranked before the full length of discharge pipe, so the heat transfer coefficient, vapor-liquid two-phase flow resistance is large.
2, U-shaped row of U-tube discharge tube used by the smooth and seamless form of two or four.
U-shaped tube top row of the advantage of more uniform frost, production and installation more convenient, charging a small amount, about 50% of its capacity for ammonia of gravity for the fluid system and into the pump under the ammonia refrigeration system, cold storage access to a wider range of applications. But it occupies more space efficient warehouse, and the upper row of tubes is not easy defrosting.
Fourth, air cooler (air cooler)
Cooler and more by the row of axial fans and evaporator coils and other components of a complete set of equipment. It relies on fans to force air through cabinets warehouse cooling discharge tubes for heat exchange, so that the air cooling, so as to achieve the purpose of reducing storage temperature.
Cooler by the cooling air in a manner that can be divided into dry, wet and dry mix of three. Among them, the refrigerant or refrigerant flow in the discharge pipe, outside air through the cooling pipe wall is called dry cooling fan; to spray the liquid refrigerant and air for heat exchange directly, known as wet air cooler; In addition to hybrid cooling fan cooling fan coil, there is refrigerant contained in the spray device. Here are the current widespread use of dry cold air cooler.
Common cold dry air cooler according to the location of installation of ceiling-and floor can be divided into two types of style. They are cooled by the air pipes, ventilators and defroster composition, and the condenser coils cooler tube row are set-piece. Often large-scale dry-cooling fan floor type.