Tag:Large refrigeration equipment and technological exchanges Edition
Help on the cold evaporator frost uneven
Please expert guidance uneven frost refrigerator evaporator problem: 3P units, an area of ??20 cubic meters, the outdoor unit is air-cooled, domestic 3MM expansion valve, the refrigerant is R22. within the machine as a wall-mounted cooling fan.
phenomenon: Evaporation within the machine Frosting uneven, only the middle part of the frosting, not up and down frosting frosting to compressor head back to the trachea. Low pressure: 2.5 MPa. expansion valve for the newly purchased parts, installed after no adjustment. Will This phenomenon is the problem, whether the expansion valve improper
the expansion valve tune a try it,
landlord said low pressure is not a problem?
should be the expansion valve is too small, appropriate to open a large expansion valve. . . . . . . .
Brother Can You Do, see clearly what to say, for what parts, how long, beating you a favor Yeah, I see the possibility of blocking the evaporator more!
expansion valve is too great, adjust small try
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First you say wrong 2.5MP pressure is 25 kg Also you can not say that this situation there is a little less likely to have established a place that is not frost is blocked the resulting evaporation bad mouth it received the compressor will not only receive low pressure compressor mouth ah but there will not be so high ah count you is 2.5 kg I do not believe you said
system Vacuum air flow too bad expansion valve, steam pressure back to about 1.5, depending on the ambient temperature, the internal temperature may be.
snow plus multi; expansion valve opening too much. . . . . . . . . . . . .
expansion valve opening is too large, small point should be adjusted, in addition to pay attention to your snow plus the amount.
Please expert guidance uneven frost refrigerator evaporator, I have one here 15P water-cooled compressors. Two pipes one group does not frost. I also emphasized the expansion valve is not frosted several times, a lot of the other group frost. Back to the compressor inlet, where the cream machine half are formed. Please help
evaporator coil has accumulated in the refrigeration oil will be more uneven
cold frost using a cooling fan, optional expansion valve should be selected outside the balanced path size should be matched with an evaporator of a dispenser greater resistance, the pressure loss is relatively large Xun.
landlord may be the expansion valve open too much, try to transfer a small, back to the gas pressure is too high.
expansion valve opened too. evaporator return air with resistance, evaporator mounted too close to the wall away from the library.
huh. . 10th floor where two brothers you say there is a group of normal, while the other group does not frost, the main problem still lies in the expansion valve above, should be replaced, there is to see there is no use of filters bet Cypriot phenomenon ago I have also experienced similar problems.