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

Sprinkler system - fire protection engineering, Sprinkler system - fire pro...

Sprinkler system - fire protection engineering Sprinkler systems may be installed in a building to achieve a number of different objectives.  Very often the primary reason for

#titleDSP.., Design an ECG filter .

Design an ECG filter .

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

Civil construction, what a problem when we do a construction project

what a problem when we do a construction project

Prepare a short document to sensitise public, Since the introduction of mob...

Since the introduction of mobile phones and other smart devices, concerns (both scientific and public) have been raised about the potential health impacts from regular use. Numerou

Field effect transistors, FIELD EFFECT TRANSISTORS (FET) A field-effect...

FIELD EFFECT TRANSISTORS (FET) A field-effect transistor (FET) is a semiconductor device in which the current flowing through a conduction channel i.e. between two terminals ca

Fabric types - woven rovings , The terms roving and yarn are widely used. A...

The terms roving and yarn are widely used. A roving is a collection of untwisted strands wound together. A yarn is a generic term for a continuous strand of textile fibres, filamen

Contemporary enginnering economics, 10.13

10.13

Moulding materials, The commonly used moulding materials for mould making...

The commonly used moulding materials for mould making can be broadly classified into the following two groups :             (a) Metals : Including grey cast iron, steel and an

Engineering economy , A project has a first cost of $2000. There is another...

A project has a first cost of $2000. There is another cost at the end of year 1 of $500 and the income for year 3 until 6 year is $1000 per year. If the compounding is quarterly, c

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