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A refrigeration cycle uses refrigerant 134-a as the working fluid. The refrigerant enters the expansion valve as a saturated liquid at 1.00 MPa and exits the valve at a pressure of 200 kPa. What is the temperature at the exit of the valve in oC? what is the internal energy (kJ/kg) of the refrigerant at the exit of the valve?
What is hogr? How much steam pressure is required to maintain adequate vacuum with it? Where are hogr used in general?
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