Problem 9.27 Consider a cold air-standard Diesel cycle. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. 9.5. For k = 1.4, cv = 0.172 Btu/(lb R), and cp = 0.240 Btu/(lb R), determine the net heat transfer per unit mass in Btu/lb State 1 2 3 4 T (°R) p (lbf/in.²) 540 14.7 1637 713.0 3274 713.0 1425.1 38.8 Fig. 9.5 p-v and T-s diagrams of the air-standard Diesel cycle. v (ft3/lb) 13.60 0.85 1.70 13.60 N a S=C 3 S=C b V 2 b p=c V=C T a

I only need help with letters (c) and (d).   At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar and T1 = 300 K. The compression ratio is 6 and the heat addition per unit mass of air is 1200 kJ/kg. Determine:(a) the maximum temperature of the cycle, in K.(b) the net work, in kJ/kg.(c) the percent thermal efficiency of the cycle.(d) the mean effective pressure, in kPa.

At the beginning of the compression process of an air-standard Otto cycle, p1 = 1 bar and T1 = 300 K. The compression ratio is 8.5 and the heat addition per unit mass of air is 1400 kJ/kg.Determine:(a) the maximum temperature of the cycle, in K.(b) the net work, in kJ/kg.(c) the percent thermal efficiency of the cycle.(d) the mean effective pressure, in kPa.

1- For modeling a gas turbine power plant producing 10 MW of power, the ideal air-standard Brayton cycle operating at steady state is used. Operating data at principal states in the cycle are given in the table below. The states are numbered as in Fig. below. (a) Sketch the T–s diagram for the cycle and determine (b) the mass flow rate of air, in kg/s, (c) the rate of heat transfer, in kW, to the working fluid passing through the heat exchanger, (d) the thermal efficiency.