Chapter 9, Problem 9.85P

Steam is delivered to turbine at 5.4 Mpa and 600C. Before condensation at 31C, steam is extracted for feedwater heating at 0.6 Mpa. For an ideal regenerative cycle, find the thermal efficiency. (Attach your T-S and schematic diagram of this problem)

1. In a steam power plant steam enters the turbine at 6 bar and 400°C and is expanded isentropic ally to the condenser pressure of 0.1 bar. If the isentropic efficiency of the turbine is 80%, find the actual net work output and the thermal efficiency.

show complete and step by step solution with ts diagram illustration. REGENERATIVE CYCLE AN ENGINE

1. Steam at 14 Mpa and 700°C is received by a regenerative cycle. Before condensation at 70 kPa, steam extracted for feedwater heating at 5 Mpa. On the mass basis of 1 kg of throttle steam, find the thermal efficiency of the engine.  PLEASE SHOW COMPLETE SOLUTION (DRAW THE TS DIAGRAM)

A power plant operating in a Reheat Rankine Cycle produces steam at 3 MPa, 600oC in the boiler. It keeps the condenser at 45oC by transfer of 10 MW out as heat transfer. The first turbine section (high-pressure) expands to 500 kPa and then flow is reheated followed by the expansion in the low-pressure turbine. Provide a detailed solution. Avoid shortcuts. Determine the values of enthalpy for each state.

A 300 MW steam power plant, according to the simple ideal Rankine cycle references Water vapor enters the turbine at a pressure of 10 MPa and a temperature of 500°C; 10 KPA expands to condenser pressure.Isanthropic of turbine and pumpaccording to the efficiency of 85%, the degree of dryness of steam at the turbine output, find the thermal efficiency of the cycle and the mass flow of water vapor circulating in the cycle.

PLEASE SHOW COMPLETE SOLUTION (DRAW THE TS DIAGRAM)

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Example 4.5: Stem expands in a turbine from 25 bar and 300°C to a condenser pressare of 20 KPa. Evaluate the Rankine cycle efficiency. What is the efficiency if the initial tempprature of steam is 500°C instead of 300°C ? Now if the boiler pressure is increased to 60 bar maintaining the steam temperature at turbine inlet at 500°C, calculate the efficiency. Assume the condenser pressure to rmain constant in all the cases. n-25 bar