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

bootstrap sweep circuit, working of bootstrap sweep circui

working of bootstrap sweep circuit

Aerospace vehicle tsructures, construction of mohrs circle

construction of mohrs circle

Fibre optics communications, explain the fibre optic communication system w...

explain the fibre optic communication system with block diagram

Aeroengine - axial flow compressor , An axial-flow air compressor consists ...

An axial-flow air compressor consists of 10 rotor/stator stages each built from p gblades of identical cross-section and designed such that the axial velocity is constant throughou

Regarding my project, i want to do project in the area wing in aircraft...p...

i want to do project in the area wing in aircraft...please give some sugestions or ideas in that

Flight control - characteristic equation, characteristic equation The c...

characteristic equation The characteristic equation (C.E.) corresponding to the linear state space equations comprising the state equation? x = Ax + Bu and output equatio

Career help, hey, i am doing b.e in chemical engineering but by aggregate i...

hey, i am doing b.e in chemical engineering but by aggregate is 55%. i would like to know what courses and preparation i have to do to get a good job. pls reply as soon as possible

Software engineering, analyse modelling for safe home security system

analyse modelling for safe home security system

Biology, Any Biology Modeling software?

Any Biology Modeling software?

Specific air range & specific endurance , Specific Air Range & Specific End...

Specific Air Range & Specific Endurance  Key cruise parameters are Range (distance flown) and Endurance (time of flight). It is important to be able to relate these to the amou

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