Figure 1 provides a diagram and Table 1 the steady-state operating data for a vapor power plant using water as the working fluid. The mass flow rate of the water is 12.4 kg/s. The turbine and pump operate have thermal losses and inefficiencies. Determine the thermal efficiency, work net output, rate of heat transfer during steam generation in kW, and the back work ratio. What is the thermal efficiency if you remove the pipe losses (hs and hi change so that hs = ha and hi =hs)? Steam generator Turbine
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This problem must be presented in a logical order showing the necessary steps used to arrive at an answer. Each homework problem should have the following items unless otherwise stated in the problem:
a. Known: State briefly what is known about the problem.
b. Schematic: Draw a schematic of the physical system or control volume.
c. Assumptions: List all necessary assumptions used to complete the problem.
d. Properties: Identify the source of property values not given to you in the problem. Most sources will be from a table in the textbook (i.e. Table A-4).
e. Find: State what must be found.
f. Analysis: Start your analysis with any necessary equations. Develop your analysis as completely as possible before inserting values and performing the calculations. Draw a box around your answers and include units and follow an appropriate number of significant figures.
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