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D
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09726-06.2018-DGbF
Therefrigerantsuctionedoutoftheevaporator(20)iscompressedbythe4cylindersoftheLPstage
(2)tointermediatepressureMP.Afterthat,thesuperheatedrefrigerantowsthroughtheintermediate
pressurechamber(3),whereitiscooledbytheliquidsubcoolersystemtoreducethedischargeend
temperature.The refrigerant then ows through the intermediate pressure line (4) to the electric
motor of the compressor for to cool the motor. After this, the refrigerant is suctioned in by the two HP
cylinders(5)andcompressedtothenalpressure.
Liquidsubcoolersystem
Theliquidsubcoolersystemconsistsofthecomponents
-liquidsubcooler(plateheatexchanger)(6)
-expansionvalve(7)
-sightglass(8)
-solenoidvalve(9)
-lterdrier(10)
Aftertherefrigerantreciever(15),theliquidlinewillbesplittedintotwolines:
Line A leads through the liquid subcooler (6) and the subcooled refrigerant ows to the
evaporator (20).Through Line B refrigerantis expanding throughthe expansion valve(7) into the
liquidsubcooler(6)inordertosubcooltherefrigerantoflineAandthroughtheintermediatepressure
line(MP)tocoolthesuperheatedrefrigerant,whichiscompressedfromlowpressuretointermediate
pressurechamber(3).
4| Description of functions