An ideal vapor compression cycle requires 2.5 kW to power the compressor. You have found the following data for cycle; enthalpy at condenser entrance =205 kJ/kg; exit=60kJ/kg; enthalpy at evaporator entrance =60 kJ/kg; exit=180 kJ/kg. Find the coefficient of performance of this refrigeration cycle.

A steam Rankine cycle operates with a condenser temperature of 30°C, and a boiler pressure of 15MPa. The turbine is divided into two stages, a high-pressure turbine, and a low pressure turbine. In between the turbine stages the steam is reheated by the boiler so that the inlet temperature to both turbine stages is the same. The exit pressure of the first turbine stage is 7MPa. The condenser inlet is a saturated vapor and the outlet a saturated liquid. What is the net work of the cycle? What is the thermal efficiency of the cycle?

An ideal RANKINE cycle delivers 210 MW of power. Steam enters the turbine at 10 MPa and500C and is cooled in a condenser at 10 kPaa. Determine the thermal efficiency of this cycleb. Mass flow of waterc. Heat rejected in the condenserd. Work inputted to the pump (remember the volume is constant)

In a steam power cycle, the steam supply is at 15 bar and in a dry and saturated condition.The condenser pressure is 0.4 bar. Calculate the Carnot and Rankine efficiencies of the cycle.Ignore the work of the pump.