The screw chiller is a large industrial refrigeration unit. Widely used in central air conditioning and large refrigeration industries. It plays an important role in cooling, cooling and cooling. The principle of water circulation is adopted to save water resources, and the equipment is directly cooled by cold water, so that the temperature of industrial equipment does not rise, and the temperature of the equipment is low. So, how should companies choose screw chillers?
1. For the refrigeration system with long working conditions under low load, it is suitable to choose multi-head piston compressor unit or screw compressor unit, which is convenient for conditioning and energy saving. It is also a double-head screw chiller that we often say. As the load changes, the screw chiller automatically determines that the number of compressors in the startup is in an optimal working state, thereby effectively saving energy.
2. When selecting a screw chiller, priority should be given to the model of the screw chiller with a relatively flat efficiency curve. At the same time, the adjustment range of the screw chiller load should be considered in the design selection. The multi-head screw chiller has excellent partial load performance, and the screw chiller can be selected according to the actual situation of the plant.
3. When using a screw chiller, you should pay attention to the conditions of the nominal working condition. The actual cooling capacity of the screw chiller is related to the following two points: a, cold water outlet temperature and flow rate; b, cooling water inlet water temperature, flow rate and fouling coefficient.
4. When selecting a screw chiller, attention should be paid to the normal working range of the screw chiller of this type, mainly because the current limit of the motor is the current value of the shaft power under surface conditions.
