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

How Does Hydraulic Fracturing For Gas And Oil Recovery Work?, what is the p...

what is the possible breakdown of this topic

Computation of Net Cash Flows for the new product, Computation of Net Cash ...

Computation of Net Cash Flows for the new product:

Amplitude shift keying, explain the operation of bask

explain the operation of bask

Finance, Rajender Kumar was a production worker at competent Motors Limited...

Rajender Kumar was a production worker at competent Motors Limited (CML) which made components and accessories for the automotive industry. He had worked at CML for almost seven ye

History and theory of architechure, centralized organization

centralized organization

Exhaust duct arrangement in aircraft, Exhaust duct arrangement in Aircraft:...

Exhaust duct arrangement in Aircraft: Exhaust ducts are invariably positioned to ensure that on the ground as the hot gases are directed away from the maintenance crews and air

Biomediacl instrumentation, Design a dc-coupled one op amp circuit that wil...

Design a dc-coupled one op amp circuit that will amplify the 100uV EOG to have the maximal gain possible without exceeding the ttypical guarenteed linear outpt range.

What is treasury bills?, What is Treasury Bills? Treasury expenses are o...

What is Treasury Bills? Treasury expenses are one of the finance devices in temporary money market. It is unprotected promissory observe from the govt part of the RBI to satisfy

Compositional defects, Q.   Explain the compositional defects. Ans. ...

Q.   Explain the compositional defects. Ans. Compositional Defect: This defect due to (a)    Alloying an element to original crystal. (b)   Impuring atom during origi

The operational amplifier , The operational amplifier : The integrated ...

The operational amplifier : The integrated circuit operational amplifier is one of the most useful and versatile electronic devices available today.  The name 'operational ampl

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