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Old 07-20-21, 07:55 PM   #2
MN Renovator
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For a vehicle application with a combustion engine, usually the compressor speed isn't controlled by the anything other than whatever the engine speed is and pressure switches turn things on and off instead of everything running at a fixed speed in a critically charged home system. The receiver also allows a bit of long term very slow leakage allowance that generally occurs in a system with a shaft seal. It gives a little bit of leeway for refrigerant quantity, but I think it impacts efficiency if it isn't right where it should be. In either case there will be a point where the system will be overcharged or undercharged, so I'm not really sure if I know how to answer the question you are asking.

Basics about this
https://hvacrschool.com/receiver-basics/
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