The evaporative condenser is a kind of heat exchange device used for cooling cold storage, which is composed of a fan, a condensing coil, a heat exchanger sheet, a box and other components.
The evaporative condenser is the main heat exchange equipment in the refrigeration system, and its principle of action is that the superheated high-pressure refrigerant gas discharged by the compressor in the refrigeration system passes through the condensation pipe in the evaporative condenser, so that the refrigerant in the high-temperature gaseous state is heat exchanged with the spray water and air outside the pipe. That is, the gaseous refrigerant is gradually condensed into a liquid refrigerant from top to bottom after entering the pipe from the upper mouth. The super wind power of the supporting induced draft fan makes the spray water completely and evenly cover the surface of the coil, and the water borrows the wind momentum, which greatly improves the heat exchange effect. The spray water with the rising temperature is partially changed to gaseous, and the latent heat of vaporization of the water is used to take away a large amount of heat by the wind, and the water droplets in the hot gas are intercepted by the high-efficiency dehydrator, and the rest of the water that absorbs the heat is scattered into the heat exchange layer of the PVC water shower, which is cooled by the flowing air, the temperature is reduced, and it enters the water tank, and then continues to circulate through the circulating water pump. The moisture evaporated into the air is automatically replenished by the water level regulator.
The heat exchange tube adopts a variety of forms, and the commonly used ones are carbon steel hot-dip galvanized pipe (divided into round tube and elliptical tube), aluminum alloy tube, stainless steel tube (also divided into 314/316 round tube, wave tube); Among them, carbon steel hot-dip galvanized evaporative condenser is the earliest product to be used, and most of the domestic users are mainly used for high-pressure gas condensation and cooling, and the applicable pressure range is 0-30MPa; Aluminum alloy evaporative condenser is a new energy-saving new generation of products, which is suitable for ice machine refrigerant condensation, and the applicable pressure range is 0-5MPa; Stainless steel tube evaporative condensers are mainly used in the corrosive gas cooling and condensation processes of some chemical plants.
The shell of the refrigeration evaporative condenser is generally sprayed with galvanized sheet, which has the characteristics of stainless steel, does not rust, looks good, and is easy to process.