Water Cooled Screw Chiller

Water cooled screw chiller
Product options
·Salt water evaporator
·Whole heat recovery/partial heat recovery
·Special power supply
·Stepless energy regulation
·Pump/cooling tower control
·Remote communication connect
·Frequency conversion

Products features
·QTwin screw compressor brand is employed with high efficiency, low noise level less wearing and long operation time.
· Four-stage volume control or 0%-100%automatic regulation.
·Use PLC microcomputer control from Germany SIEMENS, with LCD touch screen, both English and Chinese human-machine interface.
·Complete breakdown protection: high and low pressure protection,airdischarge protection.oil level protection water flow protection, reverse and lack phase protection chilled water anti-freezing protection, cooling water overtop protection.
·Wider range of variable chilled water temperature to meet the low temperature industrial requirements.

Product specification
·Refrigerant:R22/R407C
·Condenser: Fouling factor 0.044m2,9C/KW
·Power supply:380V/3P/50Hz
·Evaporator/condenser max water pressure drop:1.0MPa
·Evaporator: Fouling factor 0.018m2,9C/KW
·Allowable voltage fluctuate:±5%
·Allowable frequency fluctuate:±2%

Compressor
Select semi-closed 5:6asymmetric twin-screw compressor from world-renowned brand. The possibility of shaft seal leakage is zero. Using a rotating exhaust design, the latest development of the fourth generation line, optimize the circumference speed, excellent design of gear so that the unit has higher compression efficiency, Motor chamber compression chamber integrally cast high precision. Double pressure compensated rotor housing very strong no expansion even in the state of high pressure, and it affactively reduces the noise.

Heat exchanger
The condenser and evaporator of this series unit adopts shell and tuble heat exchanger, using new high efficient heat exchanger structure, heat exchanger adopts the most advanced and effcient heat exchangertube bundle with, unique geometric characteristics and, enhanced tube nucleate boiling required vaporiza-tion core, strengthen the fluid in the tube and delay perturbationat the same time, the water side fouling,heattransfer enhancement, the inside wall in order to get the best performs nee,compa rede to the previousdesign, the unique design of the heat transfer efficiency is increased by 30%. Evaporator evaporation tube with inner screw groove on outer concave tooth enhanced heat transfer technology condenser tube withinner screw groove cutter teeth technology, improves the evaporator and condenser heat transfer efficiency and the evaporation temperature, and ultimately improves the energy efficiency ratio for the unit.

PL
A good all-Chinese interactive interface is to achieve automatic control function before the LCD displayreal-time statues of the machine work, precise monitoring unit operating at optimum state, the touch panel sealed, waterproof, dustproof, corrosion-resistant, long-key life. Equipped with refrigerant pumps, cooling water pumps and cooling tower fan interlock control function.

Low temperature chillers
SW series of low temperature chillers based on well-known brands as the host semi-hermetic screw compressor, built-in suction filter, oil filter, oil separators, safety valve and protection module, with no leakage, low noise, stable operation.

Water cooled screw single compressor two-stage chiller(-45℃)
Product Features
· Modular Configuration Design: Modular design for high and low-pressure stages enables interchangeability between different pressure levels.
· High-Pressure Stage Unloading Slider: Patented automatic unloading mechanism for the high-pressure stage. Pure mechanical design eliminates the need for external components like solenoid valves, enabling simple and effective light-load compressor startup.
· Built-in Suction Check Valve: For larger models, incorporates a built-in suction check valve structure to reduce installation space.
· Optimized Motor Cooling Flow Path: Enhances compressor efficiency while ensuring reliable motor cooling, enabling operation across an exceptionally wide range for superior adaptability.
·  Integrated Economizer Air Filter: Provides reliable compressor protection and simplifies system configuration.

Water cooled screw cascade chiller (-55℃)
Product Features
· Wide Temperature Range: Secondary coolant temperatures from -35°C to -80°C.
· High Reliability: Utilizes semi-hermetic screw compressors to enhance operational efficiency while eliminating leakage issues common in open compressors. Reduces refrigerant top-ups and shaft seal replacements, ensuring long-term continuous operation.
· Fully Automated Control: Employs advanced Siemens PLC technology for fully automated operation.
· High Efficiency & Energy Savings: Semi-hermetic screw compressors with economizer operation boost efficiency. High-efficiency imported heat exchangers in low- and intermediate-temperature stages ensure energy-efficient operation at both partial and full loads.
· Capacity Modulation: The unit offers four-stage capacity control (25%, 50%, 75%, 100%) and stepless adjustment from 25% to 100%.
Professional Energy-Saving Operation Solutions: Customized refrigeration processes tailored to client requirements, providing specialised products suited to specific needs.