Chapter 8, Problem 8.24P

Q2/ Actual Rankine cycle, has the following specifications:  Boiler pressure is 160 bar and Turbine inlet temperature is 600 Co and Condenser pressure is 0.08 bar , Turbine efficiency is 0.9 and Pump efficiency is 0.85 and Steam mass flow rate is 130 kg/s Calculate: 1-Work net (kW). 2-heat addition (kW) 3-thermal efficiency.

A steam power plant operates between a boiler pressure of 68 bar and a condenser pressure of 0.06 bar. Calculate for these limits the cycle efficiency for a Rankine cycle with dry saturated steam at entry to the turbine.

In a steam power cycle, the steam supply is at 15 bar and in a dry and saturated condition.The condenser pressure is 0.4 bar. Calculate the Carnot and Rankine efficiencies of the cycle.Ignore the work of the pump.

Thermodynamics Instructions: Answer only letter (a) and (b) in the problem. *show complete solutions and please write legibly. TY

from thermodynamics A steam power plant operates between a boiler pressure of 48 bar and a condenser pressure of 0.04 bar. Calculate for these limits the cycle efficiency for a Rankine cycle with dry saturated steam at entry to the turbine.

Considering that the change in enthalpy at the first stage of a Reheat Rankine Cycle is 450 BTU/lb and 850 BTU/lb was recorded in the second stage, calculate for the thermal efficiency (in percent) of the cycle if both stages has a 93% efficiency and having a heat added of 9000 kJ/kg. (Hint: Neglect the pump work)

1.5An ideal Rankine cycle with reheat uses water as the working fluid. As shown in the figure below, the conditions at the inlet to the first turbine stage are 1600 lbf/in.2, 1200°F and the steam is reheated to a temperature of T3 = 800°F between the turbine stages at a pressure of p3 = p2 = 200 lbf/in.2 For a condenser pressure of p5 = p4 = 1 lbf/in.2, determine:(a) the quality of the steam at the second-stage turbine exit.   h6≈h5+v5(p6−p5)h6≈h5+v5(p6-p5)Determine the quality of the steam at the second-stage turbine exit. x4 =(b) the cycle percent thermal efficiency.

1. A Rankine cycle with reheating has a throttle pressure of 135 bars at the turbine inlet and 28 bars reheat pressure, the throttle and reheat temperature of the steam is 550C, condenser pressure is 0.035 bar, mass flow rate of steam is 10 kg/sec. Draw the T-s and schematic diagram of the cycle and determine the following: (a) ideal turbine work (b) ideal pump work

An ideal Rankine cycle operates between the pressures of 50kPa and 7000kPa. If the turbine outlet is maintained at 90% steam quality, calculate the thermal efficiency of the cycle. a.0.3269 b.0.3229 c.0.3486 d.0.3473