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

thermodynamics, Steam enters in the turbine at 6 MPa and 450 deg C and exp...

Steam enters in the turbine at 6 MPa and 450 deg C and expands at some intermediate pressure 60 % of steam is extracted and remainder expands to 10 kPa at this Investigate the effe

Solid state devices, Derive an expression for electron concentration in con...

Derive an expression for electron concentration in conduction band and hole concentration in valance band

Introduction for cost reduction and cost control, Write question here...i w...

Write question here...i want all the techniques objectives tools used limitations for cist control and cost objectives

Compton''s effect, When a beam of monochromatic x ray is incident on a grap...

When a beam of monochromatic x ray is incident on a graphite block, it get scattered and scattered wavelength is larger than that of the incident radiation wavelength. This scatter

What is networth?, What is Networth? Networth is the complete resources ...

What is Networth? Networth is the complete resources without complete obligations of an organization. Networth means equity and it is the present resources without present oblig

Numerical method, find the newton raphson iterative formula for a reciproca...

find the newton raphson iterative formula for a reciprocal of a number N and hence find the value of 1/23.correct to 5 place of decimal

Further evaluation in the use of ultrasonic and ECT sensor, proposal of the...

proposal of the dissertation topic

What is tact?, What is Tact? Tact is nothing but a situational score ene...

What is Tact? Tact is nothing but a situational score energy. Once I had gone to a Govt workplace for getting documentation. There I was informed to provide unwanted fee more th

#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,

Servo accelerometer, Servo accelerometer Electro-mechanical servo (forc...

Servo accelerometer Electro-mechanical servo (force balance) accelerometer uses an electromagnet to provide restoring force. The position of the seismic mass is measured by a p

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: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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