Instead, assume variable specific heat An ideal Diesel cycle has a compression ratio of 17and a cutoff ratio of 1.3. Determine the maximum tempera-ture of the air and the rate of heat addition to this cycle whenit produces 140 kW of power and the state of the air at thebeginning of the compression is 90 kPa and 578C. Use con-stant specific heats at room temperature

A diesel engine working on the dual combustion cycle takes in air at 95kPa, 25°C and has a maximum cycle pressure of 6600kPa. The compression ratio is 15:1. Assuming that the heats supplied at constant volume and pressure are equal, calculate the thermal efficiency. Take the compression and expansion processes as adiabatic and c and Cp for air as 0.718kJ/kgK and 1.005kJ/kgK respectively.

Four stroke compression ignition engine operating on ideal Diesel cycle with air as the working fluidhas a compression ratio of 20 and a cutoff ratio of 1.3. At the beginning of the compression process, theworking fluid is at 100 kpa, 40 C, and 120 m3. This engine is operated at 2500 rpm. Assuming cold-airstandard assumptions, determine the following:(a) The net-power output (kW), The thermal efficiency, The mean effective pressure (kPa)(b) The mean effective pressure (kPa) and net-power output (kW) in the cycle if a two stroke engine isbeing used.

A gas turbine cycle has a single compression with pressure ratio of 18, and has isentropic efficiency of 80%. The air enters the compressor at 95 kPa, 27°C. The cycle has two stages of expansion, with a reheat between the stages. Air enters the first stage at 1300°C and exits the reheat at 1050°C. The cycle also includes a regenerator with an effectiveness of 76%.Calculate the compressor work,turbine work and the thermal efficiency