An ideal diesel cycle has a maximum cycle temperature of 2300°f and a cutoff ratio of 1.4. the state of the air at the beginning of the compression is p1=14.4 psia and t1=50°f. this cycle is executed in a four- stroke, eight-cylinder engine with a cylinder bore of 4 in and a piston stroke of 4 in. the minimum volume enclosed in the cylinder is 4.5 percent of the maximum cylinder volume. determine the power produced by this engine when it is operated at 1800 rpm. use constant specific heats at room temperature. (unit is hp)

Steam at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m^3. the steam is then heated, causing the pressure in the vessel to rise to 150 kpa. determine: i. the mass of the steam in the vessel. ii. the temperature and quality of the steam after the heating process. ii the mass of the vapour, mg and liquid, m in the vessel after the heating process. if the steam in the vessel is now further heated, what would the pressure and temperature in the vessel be when all steam has turned into saturated vapour? b. sketch the processes in part (a) and part (b) on p-v and t-v diagrams, indicating clearly the temperatures, pressures and the paths. c. (0.59kg, 111.4°c, 73%, 0.4307kg, 0.1 593kg, 2.11 bar, 121.84°c)

Agas mixture with a compostion of 55 methane, 30% propane, and 15 butane by volume) is compressed from 1 bar and 25°c to 9bar in a compressor with an isentropic efficiency of 85%. the environment has a temperature of to25 c. determine (a) the exit temperature of the mixture (b) the specific work required to run the compressor (c) the specific entropy generation of the process (d) the specific exergy destruction of the process (e) the second law efficiency of the compressor

In a team, a person’s efforts are less identifiable than when that person works independently. because the person’s efforts are less identifiable, in extreme circumstances this can lead to