User Account

All Pages

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

Digital signal processing, compute IDFT using DIT and DFT X(K)={20,-5.828-j...

compute IDFT using DIT and DFT X(K)={20,-5.828-j2.414,0,-0.172-j0.412,0,-0.172+j0.414,0,-5.828+j2.414}

Chvorinov''s rule, Q. Why is it desirable to design a casting to have direc...

Q. Why is it desirable to design a casting to have directional solidification sweeping from the extremities of the mould to riser based on Chvorinov's rule? What would be an ideal

Telecommunication, history of telecommunication

history of telecommunication

Npv, Problem 1 Suppose a company is considering two independent projects, P...

Problem 1 Suppose a company is considering two independent projects, Project A and Project B. The cash outlay for Project A is $14,000. The cash outlay for Project B is $20,000. T

Armature cipl, in which type of armature winding Equaliser ring dummy coils...

in which type of armature winding Equaliser ring dummy coils are used

Aircraft internal and external markings, AIRCRAFT INTERNAL AND EXTERNAL MAR...

AIRCRAFT INTERNAL AND EXTERNAL MARKINGS SMOKING IN AIRCRAFT - Reference: ANO Article 66 and JAR-25.791 Every aircraft registered in the U.K. must have a notice indicati

#Corporate Finance Homework, #As an investment advisor you have been approa...

#As an investment advisor you have been approached by a client called Ramesh, who wants some help in investment related matters. Ramesh is currently 45 years old and has Rs 6, 00,

Human values, what is the basics suggetion for the education values

what is the basics suggetion for the education values

Small business management, Small Business Management Case. Go to the page 2...

Small Business Management Case. Go to the page 215 Kelly Grill. Three questions need to be addressed based on Ch 7. Go to www.coursesmart.com sign in user name: Waleed122@windowsli

Where do you think by djia?, Where do you think by DJIA? Nobody knows th...

Where do you think by DJIA? Nobody knows the respond to this one. However, you should at least have some ideas on the topic and be able to communicate why you think this is the

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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