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1 . Find the properties of the refrigerant at each state point with using R - 1 3 4 a Pressure - Enthalpy chart and
Find the properties of the refrigerant at each state point with using Ra PressureEnthalpy chart and complete the Table as follows:
Point : use the measured values of TR and absolute pressure of the lowside PLOWABS
Point : use the measured values of TR and absolute pressure of the highside PHIGHABS
Point : use the measured values of TR and the pressure of the condensation process equivalent to the absolute pressure of the highside PHIGHABS
Point : use the measured values of vaporisation pressure equivalent to the absolute pressure of the lowside PLOWABS and the constant enthalpy of the expansion process hRhR
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