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Schlee (China) Refrigerating Equipment Manufacturing Co.,Ltd

Add:Jupu Road, Pukou Development Zone, Nanjing City, Jiangsu Province, China

Contact us:Annie





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Air Cooled Screw Chiller Calculation Of Irrigation Volume
- Oct 17, 2017 -

Screw type chillers from the evaporator out of the situation for the gas refrigerant, Air Cooled Screw Chiller through the tightening machine adiabatic tightening in the future, become high temperature and pressure conditions. After the compressed gas refrigerant, in the condenser, such as pressure cooling condensation, after condensation changes into liquid refrigerant, and then through the throttle valve swell to low pressure, become a mixture of gas and liquid. In the meantime low-temperature low pressure liquid refrigerant, Air Cooled Screw Chiller in the evaporator absorbs the heat of cold matter, from the beginning to become gaseous refrigerant. The gaseous refrigerant enters the contraction machine from the beginning through the pipeline and begins a new cycle. Air Cooled Screw Chiller What should be paid attention to when filling refrigerant in the refrigeration system of the Screw chillers:

1. We should ensure that this work is filled with refrigerant test leakage and equipment pipeline insulation, paint construction can be carried out after completion;

2. Refrigerant cylinders should be prepared before filling the refrigerant, the platform, scale, take over, leak detection tools, rubber gloves and so on;

3. For small Freon system can adopt gas filling method, Air Cooled Screw Chiller from the compressor suction valve "more use" to the system to recharge freon;

4. When the liquid inlet is filled with freon, the liquid inlet should be connected with the dryer to ensure the drying degree of freon in the system;

5. Before and after the refrigerant filling, the refrigerant cylinder weighing and recording, cumulative refrigerant injection amount;

6. In order to speed up filling speed, can be used to soak over warm water (40 ℃) of cloth or cotton yarn covered on the cylinder. Or with a water shock cylinder less than 40 ℃;

7. When the evaporator of the screw chillers is horizontal shell and tube type, Air Cooled Screw Chiller special attention should be paid to ensure the circulating flow of the refrigerant, so as to avoid the heat transfer tube freezing and the expansion of the heat pipe;

8. On the calculation of refrigerant filling capacity in cold water cooling system: according to the internal volume of the equipment calculation, calculation, Air Cooled Screw Chiller only the system contains refrigerant liquid equipment and pipeline volume;

9. When the refrigerant filling quantity achieves the design filling quantity $number, may suspend the filling, lets the system carry on the commissioning. If the system is running normally, it indicates that the filling amount is suitable, and if the amount of the charge is insufficient, Air Cooled Screw Chiller it can continue to be filled. Should not be filled with excessive irrigation, so as not to cause unnecessary trouble and safety accidents.

The selection of screw chillers should be in accordance with the cold load and the intended use of which to ponder. For a refrigeration system with a long operating condition with low load, suitable for the choice of multiple head piston compressor group or screw compressor group, Air Cooled Screw Chiller easy to conditioning and energy-saving, that is, we often said the twin-head screw chillers, with the load changes, screw chillers automatically determine the number of start-up compressor in the best working condition, So as to save energy effectively.