Heat Gain - semi hermetic Comp

[Rink1]

Does anyone know how to calculate heat gain from a semi hermetic compressor motor?

 

[Rink1]

From the motor to the surrounding room. Doesnt a semi hermetic or hermetic motor partially abosorb some of the heat into internal gases within the vessel?

 

[IRstuff]

Unless you've got some sort of magic gas that has infinite heat capacity, the heat has to get out at some point in time. So, whatever is the power dissipation of the motor, that's the heat gain in the room.

TTFN

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[MintJulep]

It's the compressor power input minus the refrigerant mass flow x difference in refrigerant enthalpy from suction to discharge.

If your discharge line is also in the space it will be greater.

 

[chicopee]

The heat of compression is what is being created when the refrigerant is compressed from the low pressure side to the high pressure side of the refrigeration cycle. Additional heat is creted by friction, and with hermatic compressor, from the motor electrical winding.