Water is used to cool R134a in the condenser of Fig. 4.61. The refrigerant enters the counter flow heat exchanger at 800 kPa, 80°C and a mass flow rate of 2 kg/s. The refrigerant exits as a saturated liquid. Cooling water enters the condenser at 500 kPa and 18°C and leaves the condenser at 30°C. Determine the necessary mass flow rate of the water. A reminder: Each fluid is assumed to flow at constant pressure.
Figure 4.61

Transcribed Image Text:

30 C 800 kPa 0 R-134a Water 18 C 500 kPa 18 C