sk (1) Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cyc mperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% d 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats aluated at room temperature. Show the cycle on a T-S and P-V diagrams if applicable. Discuss the operation of a gas turbine power plant. Determine the air temperature at the turbine outlet.

sk (1) Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cyc mperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% d 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats aluated at room temperature. Show the cycle on a T-S and P-V diagrams if applicable. Discuss the operation of a gas turbine power plant. Determine the air temperature at the turbine outlet.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Task (1) A Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cycle temperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% and 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats evaluated at room temperature. Discuss the following related to the principles of operation for a gas turbine power plant A. What is the difference between closed and open gas turbine cycle. B. Explain how a closed gas turbine engine can be combined with a Rankine cycle. C. Why Brayton cycle is more preferred compared to Rankin cycle in power plant stations? D. How would you increase the efficiency of a Brayton cycle? E How would you minimize the back work ratio in a Brayton cycle?
Project 2 Task (1) A Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cycle temperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% and 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats evaluated at room temperature. Part 3 Now assume variation in specific heats with temperature determine the following: A. Back-work ratio B. Thermal efficiency of the cycle.
2. In an ideal Rankine cycle, the steam throttle condition is 4.10 MPa and 4400C. If turbine exhaust is 0.105 MPa, determine the thermal efficiency of the cycle.. draw a detailed schematic diagram
In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below. 5. Calculate the thermal efficiency of the cycle
2. An air standard Brayton cycle operates at a low pressure of 1.00 atm and high pressure of 5.00 atm. The compressor is 65.0% efficient and the turbine is 75.0% efficient. If the inlet air is at 80.0°F and the turbine outlet is 2040°F, what is the efficiency of this cycle?
An ideal Brayton cycle with regeneration has a pressure ratio of 8. Air enters the compressor at 300 K and the turbine at 1400 K. If the effectiveness of the regenerator is 100 %, determine: a- back work ratio,b- the net work output,c- the thermal efficiency of the cycle, andd- draw the p-v and T-s diagrams.Account for the variation of specific heats with temperature.
1. A Rankine cycle with reheating has a throttle pressure of 135 bars at the turbine inlet and 28 bars reheatpressure, the throttle and reheat temperature of the steam is 550C, condenser pressure is 0.035 bar, massflow 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(c) theoretical thermal efficiency(d) the steam rate(e) heat rate of the cycle(f) actual work of the pump if pump isentropicefficiency is 89%(g) actual turbine work if turbine isentropic efficiencyis 90%
Task (1) A Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cycle temperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% and 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats evaluated at room temperature. Now assume variation in specific heats with temperature determine the following: A. Back-work ratio B. Thermal efficiency of the cycle.
Task (1) A Brayton cycle with regeneration operates with a pressure ratio of 7. The minimum and maximum cycle temperatures are 300 K and 1000 K. The isentropic efficiency of the compressor and turbine are 80% and 85%, respectively. The effectiveness of the regenerator is 75%. Use constant specific heats evaluated at room temperature. 1. Calculate the Back-work ratio. 2. Determine the net-work output of the cycle. 3. Calculate the thermal efficiency of the cycle. 4. Now assume that both compression and expansion processes in the compressor and turbine are isentropic. Calculate the thermal efficiency of the ideal cycle.
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
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.
In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below. 4. Calculate the total turbine work of the cycle.