螺杆式工业冷水机的十三个日常问题（Thirteen daily problems of screw type industrial water cooler）.doc

螺杆式工业冷水机的十三个日常问题（Thirteen daily problems of screw type industrial water cooler） What is the cause of the difference between the evaporating temperature of the screw chiller and the outlet temperature of cold water at about 10? 1, return gas temperature is too high (capillary or throttle valve problem) 2, condenser heat sink effect is not good 3, refrigerant system refrigerant quantity is too little What happens to TOYOTAs water-cooled chillers with more refrigerants? Running for a period of time, there will be high or low pressure, downtime, Too much refrigerant, high pressure, low voltage, running current and power is greater than normal. 2 、 how to choose cooling tower in water cooling screw chiller? The main thing is to consider the problem of water flow W = Q/c* temperature difference Of which: W cooling water flow rate (Kg) Q-- refrigeration mainframe cooling capacity of 1.3 times The absorption type is 2.5 times. (KW) The specific heat of c- water is.4.186kJ/kg* degrees Temperature difference between cooling water inlet and outlet water temperature difference Take 4-5 degrees to the compression chiller 3. Where does the water-cooled screw chiller come out of the chilled water and cooling water? The water tower is the condenser, where the circulating water is cooling water. Evaporator where the frozen water, usually do heat preservation, and the evaporator in the condenser above, evaporator than condenser coarse. 4, screw chillers show high and low pressure difference is low, what is the reason? When the outside temperature is very low, the temperature of the refrigerant water and the cooling water of the half sealing screw is small, and the pressure difference between the air suction and the exhaust air is small, and the problem of high and low pressure difference is too low. 5, the new machine screw chiller startup, normal operation for half an hour, unloading downtime, hydrostatic pressure gauge 6kg, start again, low voltage protection, after stopping the st