Each unit is inseparable from the refrigerant when it i […]
What faults will the insufficient cooling capacity of industrial chiller cause?
This situation is related to the large loss of cooling capacity. Due to insufficient insulation thickness of equipment and pipelines or damage to the insulation layer, the loss of cooling capacity is increased and the cooling effect is affected. In operation, if there is a wet or frosted part on the outer surface of the heat insulation layer, it means that the thickness of the heat insulation material is not enough or has been wet. At this time, it is necessary to increase or replace the heat insulation material in time. In addition, the evaporator water tank cover is not tight, the air treatment room or cold storage sealed door seals are damaged, the air-conditioning supply ducts, and the doors and windows of the room leak. Both will increase the cooling loss, and it is necessary to take timely measures.
The poor efficiency of refrigeration compressors is also one reason. In the long-term operation of the equipment, the wear of moving parts, the increase of the fit clearance, or the tightness of the seal will reduce the actual gas transmission and the cooling capacity of the compressor. Check the refrigeration compressor. If it is not repaired, replace it in time. This condition can also be caused by air in the system. At this time, the exhaust pressure and temperature increase, the power consumption increases, and the cooling capacity decreases. Frost or icing on the evaporator surface will affect heat transfer. The treatment method is to defrost or stop the dissolved water.
If there is too much oil in the evaporator, the ammonia evaporator can use the oil collector to drain oil directly. Remove oil from freon evaporators. We can only do it during overhaul. For removable evaporators, it is convenient to remove the accumulated oil. If it is an evaporator that cannot be disassembled, when the evaporator is stopped, blow down with compressed air or nitrogen from the inlet to the lowest point, and then evacuate. Finally, the evaporator is resumed.