Domestic water-cooled screw chiller (low temperature)

The domestically produced screw chiller (low temperature) adopts asymmetric rotor design and full liquid evaporation technology to achieve efficient energy conversion and stable output. The localization process has broken through key technological barriers and possesses wide temperature range adaptability and intelligent load regulation functions. The operation process is low noise, reliable, and easy to maintain, making it the mainstream choice to replace traditional refrigeration solutions in the industrial field.

　　Domestic water-cooled screw chiller (low temperature)The refrigeration cycle mainly includes four processes: the gaseous refrigerant from the evaporator is adiabatically compressed into high temperature and high pressure gas by the compressor, cooled and condensed into liquid state under equal pressure in the condenser, expanded to low pressure through the throttle valve to become a gas-liquid mixture, and the low-temperature and low-pressure liquid refrigerant absorbs the heat of the cooled substance in the evaporator to become gas, and enters the compressor again to start a new cycle.

1、 Core advantages of low-temperature performance of domestic screw chillers

·Professional low-temperature compression system: equipped with a semi enclosed twin-screw compressor, using low-temperature resistant screw tooth profile and dynamic balance technology, the energy efficiency is improved by 25% compared to traditional equipment under -30 ℃ working conditions, and the vibration amplitude is controlled within 0.05mm. Equipped with low-temperature resistant bearings and a heated oil separator, the lubricating oil flow can still be maintained in an environment of -10 ℃, ensuring low-temperature start-up stability.

·Efficient anti freezing heat transfer design: The evaporator adopts low-temperature resistant nickel copper tubes and anti freezing cracking channels, and the heat transfer efficiency is increased by 30% compared to conventional models at -20 ℃; Optional stainless steel plate heat exchanger can achieve efficient temperature difference conduction in deep freezing scenarios from -30 ℃ to -15 ℃ through low-temperature welding technology, meeting the needs of quick freezing and deep freezing.

·Precise low-temperature control technology: equipped with low-temperature dedicated PID algorithm, achieving ± 0.5 ℃ temperature control accuracy in the temperature range of -30 ℃ to 5 ℃. The system supports a low-temperature pre adjustment mechanism to avoid frequent start and stop of the compressor, reducing low-temperature energy consumption by 40% compared to traditional equipment, and ensuring safe low-temperature operation through triple protection (frost warning, hot gas defrosting, electric tracing).

2、 Deep application in low-temperature scenarios

　　Domestic water-cooled screw chiller (low temperature)In food processing, the -30 ℃ quick freezing function can reduce the ice crystal formation rate of seafood cells to ≤ 5% and extend the shelf life by 2 times; The pharmaceutical industry provides 2 ℃ -8 ℃ dual redundant temperature control for vaccine storage, with temperature fluctuations of ≤± 0.3 ℃, in compliance with WHO standards. In the field of electronic semiconductors, ultra-low temperature cooling from -15 ℃ to -20 ℃ ensures that the etching accuracy deviation of chips is ≤ 1%; In emergency mode, the data center can quickly cool down to 18 ℃, alleviate the risk of server overheating in 3 minutes, and maintain an energy efficiency ratio of over 75% in low-temperature mode.

From core components to system control, the equipment achieves stable operation in the full temperature range of -30 ℃ through professional low-temperature design. If specific low-temperature parameters or customized solutions are needed, please contact the sales manager for detailed information.