screw compressor high discharge temp
screw compressor high discharge temp
(OP)
we have an oil flooded screw compressor for propylene refrigeration service that trips frequently on high discharge temperature(78 deg c, ) (usually when the plant is running at turndown)what changes do u guys think can be made to lower the discharge temperatures(lowering suction pressure,increasing economizer duty etc)





RE: screw compressor high discharge temp
I have also noticed that propylene coming to the compressor from the evaporators is sometimes highly superheated at the suction conditions as per the mollier diagram
what could be the possible reason? is this the correct forum or should i be posting somewhere else?
RE: screw compressor high discharge temp
Anyway, to lower the discharge temperature why in the world would you consider LOWERING inlet pressure? Oil Flooded screw compressor discharge temperature is complicated, but the source of the heat is heat of compression, which is a function of compression ratios. If you want to lower the discharge temperature, one technique is to raise the suction pressure. Another is to increase the flow rate of oil. A third is to lower the inlet temperature of the oil. Finally you can sometimes lower the discharge pressure (e.g., when you have a discharge pressure controller).
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: screw compressor high discharge temp
David
RE: screw compressor high discharge temp
RE: screw compressor high discharge temp
RE: screw compressor high discharge temp