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Piston Water Cooled Chiller Of The Five Major Selection Note Points
- Oct 27, 2017 -

The main control parameters of the piston Water Cooled Chiller are energy efficiency ratio, rated cooling capacity, input power and refrigerant type, power supply voltage and so on. Below, the most cold bacteria details the selection of piston Water Cooled Chiller products.

1, the choice of Water Cooled Chiller, the unit should pay attention to the normal working range of the unit, mainly the main motor current limit is the nominal operating conditions of the shaft power current value.

2, Water Cooled Chiller selection should be based on the cold load and use to consider. For low-load operation conditions longer refrigeration system, should use multi-head piston compressor or screw compressor unit, easy to adjust and save energy.

3, the choice of Water Cooled Chiller, the priority given to the higher coefficient of performance of the unit. According to statistics, the general Water Cooled Chiller operating at 100% load time of about the total running time of less than 1/4. The operating time of 100%, 75%, 50% and 25% of the total running time is roughly 2.3%, 41.5%, 46.1% and 10.1% respectively. Therefore, in the selection of Water Cooled Chiller should give priority to the efficiency of the curve is relatively flat models. At the same time, in the design of the selection should consider the Water Cooled Chiller unit load adjustment range. In the nominal working conditions, the piston compressor adjustment range is roughly 25%, 50%, 75%, 100%.

4, the choice of Water Cooled Chiller, should pay attention to the conditions of nominal conditions. The actual cooling capacity of the Water Cooled Chiller is related to the following factors:

a) cold water effluent temperature and flow;

b) the influent temperature, flow rate and dirt coefficient of the cooling water.

5, in the design selection should be noted: the nominal flow conditions, the cold water outlet temperature should not exceed 15 ℃, air-cooled unit outdoor dry bulb temperature should not exceed 43 ℃. If the above range must be exceeded, it should be understood whether the use of the compressor is allowed, the power of the main motor is sufficient.