This assignment is set out in two parts, where the first part should help you build the second. You will be allocated one from each of a-d, A-D, and 1-4 (as defined below) to ensure you have an individual set of data for the assignment.
PART 1: IDEAL STANDARD RANKINE CYCLE (50% of marks)
As part of a team developing a new steam power plant, you are required to analyze a standard Rankine cycle by both hand calculation and using the simulation package Cycle Pad, in order to validate the software. The cycle specifications are as follows:
 Boiler pressure: (a) 70; (b) 72; (c) 74; (d) 76 bar (as assigned).
 Boiler output temperature: (A) 500; (B) 520; (C) 540; (D) 560C (as assigned).
 Condenser pressure: (1) 0.05; (2) 0.06; (3) 0.07; (4) 0.08 bar (as assigned), where the condenser outlet is saturated liquid (i.e. dryness fraction x = 0).
 The turbine and feed pump can be considered as adiabatic, with isentropic efficiencies of 80% and 85%, respectively.
Assume the mass flow rate is 1 kg/s, so that derived work and heat quantities are specific (i.e. per kg of steam). Use a summary table to compare the following, obtained by both methods (hand calculation and Cycle Pad):
 Net work (W net).
 Heat in (Qin).
 Thermal efficiency (ηth).
PART 2: REHEAT RANKINE CYCLE (30% of marks)
*** You should perform this analysis using Cycle Pad only. ***
In order to improve the net work output and efficiency of the plant, you are required to investigate the implementation of a two-stage reheat Rankine cycle (as covered in class). You should use the same pressures and temperature assigned in Part 1. However, you must choose an intermediate pressure, at the high pressure turbine outlet. Note that the dryness fraction of the exhaust steam from the low pressure turbine should not be less than 0.88.
For your chosen design, use another summary table to compare the quantities listed above, obtained by both the Cycle Pad analysis of the standard Rankine Cycle and that of the modified Rankine Cycle. Explain all your assumptions.
Hints on using Cycle Pad
(i) You can download a free copy of Cycle Pad from the following link. If you have any trouble obtaining it, email me and I will send you a copy.
http://www.qrg.northwestern.edu/software/cyclepad/cyclesof.htm
(ii) You will find a Rankine Cycle Solved in the Cycle Pad library. Use this to help you get started with the first part of the assignment. It comprises four parts: heater, turbine, cooler and pump, corresponding to the boiler, turbine, condenser and feed pump, respectively.
(iii) Note that both heater and cooler are modeled as isobaric (i.e. constant pressure), and both turbine and pump are modeled as adiabatic and not isentropic.
(iv) In the second part, you can use the Reheating Vapor Cycle Solved in the library as a template

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