What keeps a compressor from "slugging" right after turn on
I know from reading that it is bad for a compressor to try to compress
liquid refrigerant. I also know that when the compressor cycles off,
the refrigerant will migrate away from the warm parts of the system
and into the colder parts. So during the off part of the cycle the
refrigerant will migrate out of the compressor and out of the
condenser and tend to condense and collect as liquid in the
evaporator. So what happens when the system cycles back on. Why
doesn't the liquid that has collected in the evaporator get sucked
into the compressor and damage it when the system cycles back on.
The question seems to apply to both automotive and hermetic
you practically answering you own question
On off cycle liquid collects into evaporator and on start up of next cycle
there is nothing stopping or delaying for that liquid getting into crankcase
compressor so you wind up with busted valves among other things,
solving problem of slugging is by adding suction accumulator on suction
other two items can also help by adding crankcase heater and solenoid on
liquid line, for small AC units I would say number one would be of adding
suction accumulator if space permit second solenoid and third crankcase
if you AC is to be used with cold temp. outside then it would be imperative
add crankcase heater and suction accumulator!
why doesn't the liquid that has collected in the evaporator get sucked
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