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.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages

Thermodynamics, engineering, Other Engineering

Related Discussions:- Thermodynamics, engineering

Cash flow diagrams, Cash Flow Diagrams We will use a cash flow approac...

Thermodynamics of materials, outline five (5) areas where thermodynamics ca...

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

DO ASSIGNMENT, How can I get my assignment without plagiarism

Clos network works by using permuation, how 3 stage clos networks with an e...

Avionic systems design- primed stability derivatives, Primed stability der...

Aerofoil aerodynamics , We now have some idea about what models are availab...

Find the standard deviation of this portfolio''s returns, Suppose you have ...

Architecture.., draw folded plate roof structure on multi purpose hall?

Nuclear physics, Ask queelectron - proton hypothesis

Write Your Message!

Featured Services

Online Tutoring

Project Development

Exam Preparation

Course Help

Assignment Help

Popular Subjects

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT