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Working Principle of Water-cooled Screw Refrigeration UnitUS$ 18153.85 - 18461.54MOQ: 1
I. 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, it produces chilled water for industrial or air-conditioning use. 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 an excellent refrigeration equipment for enterprises!
II. Water-cooled Screw ChillerApplication Industries
Applications of screw chillers in the industrial field include: pharmaceuticals, food freezing, plastics, heat treatment, chemical industry, fish farming, cosmetics, artificial leather, electroplating, aluminum oxidation, electrophoresis, electronics, laboratories, etc.
Applications of screw chillers in the commercial field include: central air-conditioning systems for office buildings, office complexes, hotels, villas, restaurants, factories, shopping malls, hospitals and other places.
III. 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 at full or partial load, each compressor can be controlled using stepless or 75%-*** step 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, 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 smooth spiral 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 Fittings: The refrigeration fittings are all high-quality and top brands such as Danfoss, ALCO, and SPORLAN. They are of high quality and excellent performance.
6. Adopt a highly intelligent PLC and PC-level microcomputer control system. It has sensitive response and accurate control. It has multiple functions such as automatic loading and unloading, timing on and off, and recording of fault reasons, and can realize remote or central monitoring.
7. Successfully passed the ISO9001:2000 international quality system certification.
8. When each compressor of the refrigeration system is at the minimum load (25%), it starts with star-delta step-down, effectively reducing the starting current and the impact on the power grid. The exhaust muffler installed in the compressor ensures the low-noise operation of the unit.
9. Automatic start and stop, realizing unmanned operation management automatically according to the scheduled work plan
10. The product is tested in the factory of Shenzhen Chuanbenster Refrigeration Equipment Co., Ltd.*** and after passing the full-load operation test, it leaves the factory with refrigerant.*** The equipment can start working once the water and electricity are in place.
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 function***
Pressure protection: Automatic protection devices for high and low pressure in 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 stop;
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 the compressor from starting frequently;
Oil level protection: When the oil level of the compressor is too low, the protection device will start;
Water flow protection: When the water flow stops or decreases and continuing to operate will endanger the unit, the unit will automatically stop;
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