A steam power plant operates on the reheat Rankine cycle. as shown in the schematic diagram (Fig. Q 2). Steam enters the high-pressure turbine at 12.5MPa and 550o C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450o C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85% and 90%, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5%, then make all the necessary assumptions and determine (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency. Draw an accurate T-s diagram of the cycle and label all the property values on this diagram.

Consider a steam power plant operating on the ideal Rankine cycle. Steam enters the turbine at 3 MPa and 350°C and is condensed in the condenser at a pressure of 10 kPa. Determine

A generator uses a gas turbine cycle. Air enters the compressor at a pressure of 1 bar and a temperature of 30°C with a compressor efficiency of 0.85. Hot gas exits the combustion chamber at a pressure of 9 bar and a temperature of 900°C. The power generated by the turbine is 2400 kW with a turbine efficiency of 0.82. a. Draw installation diagrams and T-s cycle process diagramd b. Determine the work of the compressor and turbine and the mass rate of the air requirement c. Cycle thermal efficiency (air: Cp=1,005 kJ/kg. K dan γ=1.4; Gas hot: cp=1,005 kJ/kg K and γ=1.4)

T B A D Consider the cycle in the diagram (very similar to the Rankine Cycle) using water as the working fluid. Process A-B: A saturated mixture of water is pumped from low pressure to a high pressure saturated liquid in an iso- entropic (and adiabatic) process. Process B-C: The high pressure saturated liquid enters a boiler where it is heated at constant pressure process by an external heat source to a super-heated vapor. Process C-D: The super-heated vapor goes through a turbine, generating power exiting as a saturated vapor. Assume an iso-entropic (and adiabatic) process and neglect kinetic energy and potential energy changes. Process D-A: The saturated vapor then enters a condenser where it is condensed at a constant pressure process back to its original state. The boiler operates at 8 MPa (points B & C) and the condenser operates at 200 kPa (points A & D). Assume a mass flow rate of 1 kg/s. Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and…