working principle diagram of water-cooled screw unit

Some users of Chuanbenster

1.Water-cooled Screw ChillerOverview
Shenzhen Chuanbenster Refrigeration Equipment Co., Ltd.The water-cooled screw chiller uses a screw compressor for compression refrigeration and water as the cooling medium for heat dissipation. Finally, chilled water for industrial or air-conditioning use is produced. It is mainly applied to large equipment matching or central air-conditioning systems. The machine has the advantages of ***, simple operation, easy cleaning, strong refrigeration effect, energy saving and high efficiency. It is the ideal refrigeration equipment for enterprises!

2.Water-cooled Screw ChillerApplication Industries
In the industrial field, the applications of screw chillers include: pharmaceuticals, food freezing, plastics, heat treatment, chemical industry, fish farming, cosmetics, artificial leather, electroplating, aluminum oxidation, electrophoresis, electronics, laboratories, etc.
In the commercial field, the applications of screw chillers include: central air-conditioning systems in office buildings, office complexes, hotels, villas, restaurants, factories, shopping malls, hospitals and other places.

3. Characteristics of Screw Chiller Units
1. Compressor: *** Imported high-quality semi-hermetic screw compressors such as BITZER, HANBELL, and RefComp. Among them, the 5:6 high-efficiency screw rotor design has an energy efficiency 20 - 30% higher than that of general compressors. It has the advantages of stable and reliable operation, ***, low failure rate, and convenient maintenance. For the unit operating under full or partial load, each compressor can be controlled using stepless or 75%-*** stage capacity.
2. The shell-and-tube semi-hermetic screw compressor has types suitable for various refrigerant working media such as R22, R407C, and R134a
3. Condenser and Evaporator: The condenser of the screw chiller uses different types of heat exchange copper tubes imported from Germany and Japan and domestic ones. The outer surface of the copper tube is processed into trapezoidal low-fin tubes to increase the heat exchange area and enhance the heat exchange performance. The inner surface of the copper tube is smooth, reducing the water pressure and making it easy to clean and maintain
4. The evaporator uses internally threaded high-efficiency heat exchange copper tubes. The spiral smooth outer surface of the copper tube and the non-short-circuit design of the water-side baffle plate improve the mixing and heat exchange efficiency of the chilled water
5. Refrigeration accessories: Refrigeration accessories are all high-quality and top brands such as Danfoss, ALCO, SPORLAN, etc., with excellent quality and performance
6. Adopt a highly intelligent PLC and PC-level microcomputer control system. It has sensitive response and accurate control, with multiple functions such as automatic loading and unloading, timed on and off, and recording of failure reasons, and can realize remote or central monitoring
7. Successfully passed the ISO9001:2000 international quality system certification
8. Under the minimum load (25%) of each refrigeration system compressor, the star-delta step-down starting effectively reduces the starting current and the impact on the power grid. The compressor is equipped with an exhaust gas eliminator, ensuring the low-noise operation of the unit.
9. Automatic start and stop, automatically realizing unmanned operation management according to the scheduled work plan.
10. The product is manufactured and shipped with refrigerant after passing the inspection and full-load operation test in Shenzhen Chuanbenster Refrigeration Equipment Co., Ltd. The equipment can start working as long as water and electricity are available.
11. Explosion-proof and other special models can be customized.
12. Multiple protection functions: time delay, water shortage protection, water flow protection, high and low pressure control and display, temperature control and display, overload protection, phase loss and reverse phase protection, anti-freezing protection, fault display, automatic water replenishment and interlocking control circuit

Safety protection functions
Pressure protection: Automatic high and low pressure protection devices for the refrigeration system;
Power protection: Under-voltage protection, phase loss protection, reverse phase protection, overload protection, motor overheat protection;
Anti-freezing protection: When the chilled water temperature is too low, the unit will automatically shut down;
Safety valve protection: When the refrigerant pressure exceeds a certain value, the safety exhaust valve will automatically open;
Delay protection: Compressor delay start protection to prevent frequent startup of the compressor;
Oil level protection: The protection device is activated when the oil level of the compressor is too low;
Water flow protection: When the water flow stops or decreases, and continuous operation will endanger the unit, the unit will automatically shut down;