Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.², 2700°R with a mass flow rate of 0.72 lb/s and exit at 29 lbf/in.² and 1620°R. If heat transfer from the turbine to its surroundings occurs at a rate of 45.82 Btu/s, determine the power output of the turbine, in hp. W cv = CV i hp

A spring-loaded piston-cylinder device contains 1.5 kg of carbon dioxide. This system is heated from 200 kPa and 25 °C to 1200 kPa and 300°C. Determine the total heat transfer to and work produced by this system.

Question 3.3 When the air with a pressure of 0.1 MPa and a specific volume of 0.8 m³/kg was provided into a compressor at a flow rate of 0.25 kg/s, its pressure became 0.7 MPa and its specific volume became 0.2 m³/kg. Through the compression, the specific internal energy was increased by 80 kJ/kg, and there was heat loss of 50 kJ/s to the environment. In this case, calculate the work [k]/s = kW] that the compressor did in unit time. Potential energy and kinetic energy can be negligible.