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

Thin-skinned structures , Thin-skinned Structures  The SCB geometry can...

Thin-skinned Structures  The SCB geometry can't be used because the skins are too flexible.  Instead, a centre-notch flexure (CNF) test can be used. A hole is drilled abo

Engineering signals, Engineering Signals A signal is a variation of a m...

Engineering Signals A signal is a variation of a measurable quantity that conveys information about the behaviour of a system. • A signal can depend upon a single variable o

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

Final project, can u give idea about project in agriculture

can u give idea about project in agriculture

Basic electronics, Q 1.what is the difference between BJT and FET.What is B...

Q 1.what is the difference between BJT and FET.What is Biasing?Discuss abt diffrent Biasing techniques?Write the advantages and Volatage divider biasing over other biasing?what is

Principles of fire alarm systems, Principles of Fire Alarm Systems: Fi...

Principles of Fire Alarm Systems: Fire alarm systems usually perform two primary functions.   Firstly, they provide a means for warning people throughout the building that the

Aviation legislation - dealer’s certificate , DEALER'S CERTIFICATE Refere...

DEALER'S CERTIFICATE Reference: When the sale of an aircraft involves flight without a Certificate of Registration, The C.A.A. will permit the aircraft to fly under certain re

Thermo electric thermometer, how thermoelecteric thermometer is contructed ...

how thermoelecteric thermometer is contructed and how it working

What is inflation?, What Is Inflation? In economic terms, blowing up is ...

What Is Inflation? In economic terms, blowing up is the development of the costs of products or solutions in the given economic climate over a time period. As the costs increase

Supersonic intakes - aircraft engine, SUPERSONIC INTAKES At supersonic ...

SUPERSONIC INTAKES At supersonic speeds, the pitot type of air intake is unsuitable due to the severity of shock waves which form and progressively reduce the intake efficiency

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