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Basic refrigeration piping layout
Release time:2016-10-12 16:08:55
Freon refrigerants and lubricants dissolve each other are the main features. Therefore, when you are decorating the refrigeration piping, must be from each of the refrigeration compressor with oil after the condenser, evaporator and after a series of equipment, pipes, all the way back to compressor crankcase.
Suction pipe
(1) taking into account the continuing flow of oil from evaporator compressor compressor suction pipe should be not less than 0. 01 gradient, slope to the compressor.
(2) when the evaporator is above refrigeration compressors, in order to prevent downtime liquid refrigerant from the evaporator into the compressor, evaporator suction tube should bend upwards from the evaporator, the highest point, then down through to the compressor.
(3) when freon refrigeration compressors in parallel operation, go back to each of the refrigeration compressor lubricants may not be equal to the amount of lubricating oil and away from it, pipe must be equipped with pressure in the crankcase and oilpipes, making oil more everyone by balancing the flow of oil in the refrigerant compressor oil less compressor.
(4) increase freon gas in the vertical suction pipe must have a certain flow rate, canbring the oil back to the compressor.
(5) in the refrigeration system of variable load, in order to ensure oil return at low load, may need to use very small pipe diameter, especially energy adjustment range islarger, more prominent. In order to avoid pressure drop at full load is too large, twoup riser, between the two pipes with a set of oil elbow connection.
(6) multi-evaporator return air duct is connected to the same when the suction ductshould be based on the relative position of the evaporator and compressor to takea different approach.
Exhaust pipe
(1) in order to prevent oil or condensing liquid flow back into the compressor, compressor exhaust pipe O.O1 ~0.02 slope, slope oil separator or condenser.
(2) when the individual oil separator, if the compressor is below the condenser, exhaust pipe design into a u-shaped pipe to prevent condensation of liquid refrigerant and lubricant to flow back into the compressor.
Refrigerant piping layout
(1) ensure the adequate supply of each evaporator.
(2) to avoid excessive pressure loss.
(3) to prevent liquid refrigerant into the refrigeration compressor.
(4) to prevent the loss of refrigeration compressor oils.
(5) should be able to keep the air-tight, clean and dry.
(6) should consider the operation and easy maintenance, and with due regard for order.