TRG-TRC003-EN 41
Quiz
14 Referring to Figure 60 and given the following conditions,
A - 44.5°F, 90 psia, 41.6 Btu/lb [6.9°C, 0.62 MPa, 96.8 kJ/kg]
B - 44.5°F, 90 psia, 108.5 Btu/lb [6.9°C, 0.62 MPa, 252.4 kJ/kg]
C - 54.5°F, 90 psia, 110.3 Btu/lb [12.5°C, 0.62 MPa, 256.6 kJ/kg]
D - 190°F, 280 psia, 128.4 Btu/lb [87.8°C, 1.93 MPa, 298.7 kJ/kg]
E - 121.5°F, 280 psia, 112.8 Btu/lb [49.7°C, 1.93 MPa, 262.4 kJ/kg]
F - 121.5°F, 280 psia, 46.2 Btu/lb [49.7°C, 1.93 MPa, 107.5 kJ/kg]
G - 107.5°F, 280 psia, 41.6 Btu/lb [41.9°C, 1.93 MPa, 96.8 kJ/kg]
H - 44.5°F, 90 psia, 22.7 Btu/lb [6.9°C, 0.62 MPa, 52.8 kJ/kg]
a How much superheat is in this system?
b How much subcooling is in this system?
c What is the refrigeration effect of this system?
d At the inlet to the evaporator, what percentage of the refrigerant exists
as a vapor?
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Figure 60
