Thermodynamics, engineering, Other Engineering

Assignment Help:
A methane-fired microturbine based on the regenerative gas turbine cycle employs a centrifugal compressor with a polytropic efficiency of 85%, a radial inflow turbine with a polytropic efficiency of 87% and a recuperator with an effectiveness of 0.75. The pres-sure loss is 10% divided equally between the high- and low-pressure sides. To avoid the use of exotic materials in the hot section, the combustor was limited to an equiva-lence ratio of 0.2, with a resulting combustor exit temperature of 1200K when the com-pressor inlet temperature is 298K. The working fluid can be assumed to be air with k = 1.4 with a cp = 1.025 kJ/kg-K in the compressor, 1.050 kJ/kg-K on both sides of the re-cuperator, and 1.075 kJ/kg-K in the combustor and turbine. The fuel is available as a gas at atmospheric pressure and 298K and must be pumped to a pressure that is 10% higher than the combustor exit pressure using a small compressor whose adiabatic efficiency is 60% (this is parasitic power to be subtracted from engine output). The specific heat, cp, of methane is 2.35 kJ/kg-K, and its k = 1.28. The combined mechanical and electrical efficiency of the turbine and the electric generator is 90%. If the compressor pressure ratio is 5:1, and the net power output is 500 kWe, compute the overall efficiency of the turbo-generator set, accounting for mechanical, electric and parasitic losses. Calculate the air and fuel flow rates under these conditions and estimate the exergy efficiency of the combustor, accounting for the methane pumping parasitic power.

Related Discussions:- Thermodynamics, engineering

Electromagnetic spectrum , Electromagnetic Spectrum: Visible light belo...

Electromagnetic Spectrum: Visible light belongs to a family of waves known as the electromagnetic spectrum. Other members of this family include high frequency short wavelength

Credit limit, HOW WOULD YOU JUDGE THE POTENTIAL PROFIT OF BAJAJ ELECTRONICS...

HOW WOULD YOU JUDGE THE POTENTIAL PROFIT OF BAJAJ ELECTRONICS

Compositional defects, Q.   Explain the compositional defects. Ans. ...

Q.   Explain the compositional defects. Ans. Compositional Defect: This defect due to (a)    Alloying an element to original crystal. (b)   Impuring atom during origi

Starting worki in ccs.., 1- plot and creat x1(t)=4exp(t/5),x2(t)=Sin(2pift+...

1- plot and creat x1(t)=4exp(t/5),x2(t)=Sin(2pift+Pi/2) 2-write a c fucntion to compute convolution of n2 finite series ands plot 3-implemet an FIR filter in c in CCS

AERONAUTIC PROJECT, hello sir, i am a FINAL YEAR B.E STUDENT...NOW i am in ...

hello sir, i am a FINAL YEAR B.E STUDENT...NOW i am in the stage of doing a PROJECT...please give me some ideas in the field of AERODYNAMICS for doing PROJECT..

Plastics, what are the key polymeric structural features to most elastomer...

what are the key polymeric structural features to most elastomeric material

Events and its efffeccts, i need to prepare my aasingment for financial dat...

i need to prepare my aasingment for financial data analysis for that i need 10 business events

Java, 2. Differentiate between stream oriented and data gram oriented socke...

2. Differentiate between stream oriented and data gram oriented socket in java?

Intro Finance Assignment Help, QUESTION 2: Wing Yin Tsui, CEO of Lian Huang...

QUESTION 2: Wing Yin Tsui, CEO of Lian Huang & Wong Bin Dean Hwang Manufacturing Limited is considering a four year project. The project requires an initial investment of $10,000,0

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd