How to solve the common errors in the operation of chillers?
Industrial chillers will always wear out during use. Therefore, we need to record and analyze its operating parameters on a regular basis, listen to the sounds made during operation, check the use of snow and refrigeration oil, etc., and regularly maintain it Operation etc. Today we list the common problems and solutions in the operation of the chiller, hoping to help everyone.
1. What should I do if the temperature difference between the inlet and outlet of the chiller is small?
A technician who specializes in industrial refrigeration, commercial central air conditioning, and industrial dehumidification equipment analyzes the reason why the temperature difference between the inlet and outlet of the chiller is too small.
Technicians said that when users use chillers, the company uses chillers. The current inlet temperature is 24 ° C and the outlet temperature is 23 ° C. The temperature difference is too small to meet user needs. For the reason that the temperature difference between the inlet and outlet water is too small, there are mainly the following situations:
2. The output chilled capacity of the chiller is small. For example, the chiller itself is faulty or not fully loaded. These can be preliminarily judged by observing the chiller operating current and other parameters.2. It may be that the heat transfer effect is not good, for example, the heat transfer tube has serious scaling and affects the heat exchange of the chiller. This can be judged by observing the difference in heat transfer temperature between the water temperature and the evaporation temperature.
3. The water flow is too large. This can be judged by observing the pressure difference between the inlet and outlet water of the evaporator and the running current of the pump.
4. After eliminating the above problems, you can consider whether the sensor or the thermometer is inaccurate.
The technical staff said that under normal circumstances, if the chiller fails, directly communicate with the manufacturer by phone to confirm what the fault is, and the user can solve the small fault by themselves. If it cannot be solved, it is recommended that the chiller manufacturer arrange after-sales The service personnel come to the door for inspection and overhaul and maintain the unit.
Second, the chiller fan noise
Noise is an annoying sound. Continuous noise will also pollute the surrounding environment. The causes of noise produced by general chiller fans can be described as follows:
When the blade rotates, it will cause friction with the air or impact. The frequency of noise is composed of multiple frequencies, and these frequencies are all related to the speed of the fan. Suggestion: If the axial fan has the configuration of moving wing and static wing, the number of blades of the two should be different, so as to avoid greater noise resonance.
Noise is also generated when the blades generate eddy currents. During the operation of the fan, vortex will be generated on the back of its moving wing. This vortex will not only reduce the efficiency of the fan, but also generate noise. In order to reduce this phenomenon, the installation angle of the blade should not be too large, and the blade bending should be smooth, and it should not be changed suddenly.
In addition to the fixed noise of the fan itself, there are many noise sources. Such as: bearing due to insufficient precision, improper assembly or poor maintenance will cause abnormal noise. The motor part also generates noise, some of which are caused by poor design or poor manufacturing quality control, but sometimes are caused by cooling fans inside and outside the motor. Therefore, in the selection of equipment, strict selection of formal products must be carried out, taking into account factors such as the humanized design of the equipment.
Geson chiller product range covers Industrial Refrigeration and Commercial Central air-conditioning, including Water-cooled chillers, Air-cooled chillers, Screw chillers, Scroll chillers, Centrifugal chillers, Water(ground) source heat pumps, Air source heat pumps and etc., Capacity from 2tons~4000tons, and temperature from -160℃~30℃, complete full product series for customers.
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