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

Material science and engineeing, cite advantages of forming metal by extrus...

cite advantages of forming metal by extrusion as opposed to rolling

Principles of jet propulsion, Principles of Jet Propulsion: Newton 's...

Principles of Jet Propulsion: Newton 's Laws of Motion. To understand the basic principles of jet propulsion it is necessary to understand the practical application of Sir I

Find the funcation (a).f 0 g , f(x)=x^2 - 1 , g(x)=2x + 1

f(x)=x^2 - 1 , g(x)=2x + 1

300 X zoom lens, How to calculate the field of views

How to calculate the field of views

I need help with this assignment , i will need this assignment to be solved...

i will need this assignment to be solved .

#title.welding., Does the atmospheric pressure inside of a tube aproximatel...

Does the atmospheric pressure inside of a tube aproximately a half an inch in diameter cause resistance against an end plug being flash welded to the end of it and what would be th

Cascaded, circit diagram and operation

circit diagram and operation

Aeroengines - cfd, Essentially, the strategy of CFD is to replace the conti...

Essentially, the strategy of CFD is to replace the continuous problem domain with a discrete domain using a grid domain with a discrete domain using a grid. In a continuous doma

Development of surfaces, a hexagonal prism of 40mm side length of base and ...

a hexagonal prism of 40mm side length of base and height 80mm is resting on HP on its base with two edges of base is parallel to horizontal plane. A square hall of equally inclined

Line communication, what is two motion selector

what is two motion selector

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