Rod chillers can be divided into water-cooled screw chillers and air-cooled screw chillers according to different heat dissipation methods.
Water-cooled screw chiller is mainly composed of compressor, evaporator, condenser, refrigeration accessories, electric control system, etc. When enterprises purchase water-cooled screw chillers for installation, they must purchase additional auxiliary equipment for heat exchange to provide the circulating cooling water required by water-cooled screw chillers. Supporting auxiliary equipment includes cooling water tower, circulating water pump and double-layer stainless steel heat preservation water tank.
The configuration of air-cooled screw chiller is the same as that of water-cooled screw chiller, but the condenser type is different. It uses fan to dissipate heat, so it uses finned condenser to conduct continuous heat exchange with air. Therefore, the air-cooled screw chiller does not need a cooling water tower, but requires a circulating water pump and a double-layer stainless steel heat preservation water tank.
Screw chillers are divided into industrial screw chillers, medium-temperature screw chillers and low-temperature screw chillers according to the water supply temperature range.
1. Industrial screw chiller
It can provide 5~15 ℃ chilled water, or use glycol solution as the refrigerant carrier, and can provide - 5~+5 ℃ process chilled water solution, which can be used as the process cold source required by ice storage, low temperature air supply, central air conditioning and other production processes. At the same time, I can carry out special design for the unit according to the user's requirements, and can provide water chillers with large temperature difference (the inlet and outlet water temperature difference is 8~15 ℃). Or high outlet water temperature unit (outlet water temperature 15 ℃~25 ℃). The cooling capacity is 94KW-3360KW.
2. Medium-temperature screw chiller
The outlet water temperature is - 5 ℃~- 45 ℃, and the imported semi-closed screw compressor unit (with economizer) is adopted; It can provide - 5 ℃~- 45 ℃ low temperature glycol solution or saline solution. It can be used as cold source for chemical, pharmaceutical, cold storage, ice rink and other processes. The cooling capacity is 55KW-2000KW.
3. Low temperature screw chiller
The outlet water temperature is - 45 ℃~- 110 ℃, and can provide - 45 ℃~- 110 ℃ alcohol or calcium chloride aqueous solution frozen water; Adopt binary cascade or ternary cascade screw refrigeration system. High energy efficiency ratio and stable operation.
At the same time, it can be designed according to the use requirements. The ultra-low temperature, anti-corrosion and explosion-proof special industrial screw chillers can meet the requirements of various industries for process cold sources.
Source: Xingde Machinery
