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

Matrices for risk analysis, Matrices for risk analysis: NFPA 551 descr...

Matrices for risk analysis: NFPA 551 describes a technique of using matrices for risk analysis.  Such matrices are quite commonly used in the UK for assessing risk but, fortun

DPC IN CIVIL ENGINEERING, I WANT TO KNOW WHAT IS DPC TERM MEANING IN CIVIL...

I WANT TO KNOW WHAT IS DPC TERM MEANING IN CIVIL ENGINEERING

Firing order, FIRING ORDER If in multi cylinder engines, various cyli...

FIRING ORDER If in multi cylinder engines, various cylinders are made to fire one after the other, interference between adjacent cylinders would occur, since these may have o

Equivalent shaft horsepower - aircraft maintenance , Equivalent Shaft Horse...

Equivalent Shaft Horsepower (EHP) In practice there is always a certain amount of jet thrust in the total output of the turbo-propeller engine and this must be added to the s.h

Lock Clip Came out from Rear Brake Drum (Backplate) , A type of brake used ...

A type of brake used to keep the vehicle from rolling when it is parked. The standard Parking brake locks the rear wheels to keep the car from moving. Parking brake cable is fixed

Java, I''m trying to figure out how to use a for and while loop to: print e...

I''m trying to figure out how to use a for and while loop to: print each word found in 4 columns across the output page, in the order they were found. This means you must print the

Chemistry, explain elecrochemical series and give its applications

explain elecrochemical series and give its applications

Surveying construction with applications, need help with quiz 40 questions

need help with quiz 40 questions

Assignment on cost of capital, Atlas Inc. is planning to invest in a 4-year...

Atlas Inc. is planning to invest in a 4-year project which has the same risk as the firm’s existing assets and operations. The project requires a $150,000 initial investment and is

Homework, Assume that a movie is two hours long, that the frame rate is 30 ...

Assume that a movie is two hours long, that the frame rate is 30 frames per second, and that the resolution per frame is 1080i (1920×1080 pixels per frame), and that each pixel is

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