How to choose a screw chiller correctly

Jun 02, 2022

The industrial chiller machine has become one of the essential equipment for cooling in most production enterprises, and the screw chiller is a large-scale industrial refrigeration equipment. Screw chillers are divided into air-cooled screw chillers and water-cooled screw chillers. Compressors, condensers, and evaporators are important components of screw chillers. When purchasing a screw chiller machine, you must first understand the main control parameters of the screw chiller, such as refrigeration coefficient, cooling capacity, refrigerant, input power, etc. When choosing a screw chiller, we must consider the cooling capacity, the user's operating voltage, the outlet water temperature, and the condensing temperature. Use this to determine the model of the compressor, as well as the energy of the evaporator and condenser.

40TR Air cooled screw chiller

The actual cooling capacity of the screw chiller equipment is related to the following factors:

1. Chilled water outlet temperature and the water flow

2. Inlet water temperature, flow rate and fouling coefficient of cooling water

When choosing a screw compressor chiller, in addition to considering the cooling capacity, the installation environment should also be considered. In this way, it is determined whether to choose an air-cooled screw chiller or a water-cooled screw chiller. Under the same cooling capacity requirement, the energy efficiency ratio of the water-cooled screw chiller is higher than that of the air-cooled screw chiller. Therefore, There will be differences in the model of the compressor, which leads to the higher cost of the compressor of the air-cooled screw chiller than that of the water-cooled screw chiller, and the cost of the air-cooled condenser is also higher than that of the water-cooled shell and tube condenser. So how to determine whether to choose a water-cooled screw chiller or an air-cooled screw chiller?

From the perspective of the purchase cost of the screw chiller, the price of purchasing a water-cooled screw chiller is lower than that of an air-cooled screw chiller.

If you consider the installation environment, the air-cooled screw chiller is easy to install, without the need to install a cooling tower, and it is suitable to install the air-cooled screw chiller in places where water resources are scarce.

From the perspective of the maintenance of the screw chiller, the later maintenance cost of the water-cooled screw chiller is higher, and the technical requirements are higher. If there is no professional staff, in the process of installing and using the water-cooled screw chiller, It is easy to cause various problems in the chiller due to problems such as water flow, while the maintenance of the air-cooled screw chiller is relatively simple. Regularly clean the condenser and check the machine regularly.

Through the above analysis, do you know how to choose a suitable screw chiller? If you don't know how to choose when purchasing a screw chiller, Call us +86 15112554736 to get the professional suggestion.

water cooled screw chiller with water tank

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