Example 2: Refrigerant R-134a enter the compressor of a has a refrigerantor a superheared vapor at 0.14MPa and -10°C at arate of 0.05kg/sec and leave at 0.8Mp and 50°C. The refrigerant cooled in the condenser to 26°C and 0.72Mpa is throttled to 0.15MPa.Disregradingany heat transfere and pressure drop in the connecting line between the components. Determine: a) The rate of heat removed from the refrigerated space b) The power input to the compressor. c) Isentropic eff of the compressor d) COP of the refrigerantor.

A turbine is supplied with steam at 25 BAR, 42C and exhaust into a condenser at 55 KPa. Find the thermal efficiency of the cycle. Draw the schematic and T-S diagrams with corresponding labels. (Clear handwritten and step by step solution)

If air enters the adiabatic turbine at 227 degree C and 1500kpa. Final pressure would reach 100kpa, and efficiency of turbine at 85%. What is final temperature and final work? Cv is 0.719kJ/kg.K, cp is 1.007kj/kg.k. Pls sketch two processes of T-S diagram

The evaporator (a heat exchanger) in an A/C unit has R-410A entering at -20 °C and a quality of 30% and leaves at the same temperature and a quality of 100%. The COP of the air conditioner is known to be 1.3 and the mass flow rate is given as 0.013 kg/s. Find the power input to the cycle. (Note that, here, the evaporator is the part of the A/C unit that accepts [i.e., withdraws] heat from the room maintained at a cold temperature)