Chapter 8, Problem 8.66P

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Q4: A 600 MW heat engine, which is cooled by water, the thermal efficiency of engine is 0.15 heat reject in engine. Determine the

In a turbine, steam enters with an enthalpy of 1275 Btu/lb, and leaves with an enthalpy of 1115 Btu/lbm. The transferred heat is 13 Btu/ibm. Find the turbine work in hp where the steam flow rate is 5 lbm/sec?

The air conditioner in a house or a car has a cooler that brings atmospheric air from 30 degree Celsius to 10 degree Celsius, both state at 101 kPa. For a flow rate of 0.75 kg/s find the rate of heat transfer

A rigid steel tank contains 0.5 kg R410A at 0°C with a specific volume of 0.01 m³/kg. The whole system is now heated to a room temperature of 25°C. Find the final P and the process heat transfer.

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Air at 200kPa, 30°C is contained in a cylinder behind a piston with initial volume of 0.1 m3. The inside pressure balance ambient pressure of 100 kPa plus an external imposed force that proportional to V05, Now heat is transfer to the system to final pressure of 225 kPa. Find the work done for this process. (8.65 kJ)

9. An air compressor takes in air at 105 Pa and 27°C having volume of 1.5 m3/kg and compresses it to 4.5×105 Pa. Find the work done, heat transfer and change in internal energy if the compression is isothermal.

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