As part of a heat pump system refrigerant R-134a flows through a well-insulated water-cooled condenser. R-134a...

 

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As part of a heat pump system refrigerant R-134a flows through a well-insulated water-cooled condenser. R-134a enters the condenser at 40 C and 400 kPa, rejects 5 kW of heat to the cooling water, and leaves the condenser at 140 kPa with an internal energy of 170 kJ/kg. The cooling water enters the condenser at 10 C and leaves at 20 C, existing in the compressed liquid state throughout. Answer the following questions and select your answers using the boxes below: Determine: a) The mass flow rate of the water through the condenser, to two decimal places. b) The enthalpy of the R-134a before it enters the condenser, to one decimal place. c) The enthalpy of the R-134a after it enters the condenser, to one decimal place. d) The mass flow rate of the R-134a through the condenser, to two decimal places. As part of a heat pump system refrigerant R-134a flows through a well-insulated water-cooled condenser. R-134a enters the condenser at 40 C and 400 kPa, rejects 5 kW of heat to the cooling water, and leaves the condenser at 140 kPa with an internal energy of 170 kJ/kg. The cooling water enters the condenser at 10 C and leaves at 20 C, existing in the compressed liquid state throughout. Answer the following questions and select your answers using the boxes below: Determine: a) The mass flow rate of the water through the condenser, to two decimal places. b) The enthalpy of the R-134a before it enters the condenser, to one decimal place. c) The enthalpy of the R-134a after it enters the condenser, to one decimal place. d) The mass flow rate of the R-134a through the condenser, to two decimal places.

Answer rating: 100% (QA)

Solutions Step 1 Given the pressure and temperature at the inlet of the refrigerant 134a P1400kPa an... View the full answer