The Pressure - Enthalpy Chart
If the operating temperatures and pressures are known, the refrigeration system can be plotted on the P-H diagram. ... in order to reduce the temperature, the pressure has to be reduced, and some sort of restriction is required for this to occur. It would be preferable if the restriction could regulate 0.6 0.8 1.0 1.4 2.0 3.0 4.0 6.0 8.0 10 14 ...
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