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

Melting practice, what is melting practice

Market value, Calculate the market value of a firm with total assests of $1...

Plane transmission diffraction grating, A diffraction grating is an optical...

Thermodynamics, What are the importance of engineering thermodynamics

Matrices for risk analysis, Matrices for risk analysis: NFPA 551 descr...

Firing order, FIRING ORDER If in multi cylinder engines, various cyli...

8051, Architecture of 8051

Boroscope inspections of air craft engine, Boroscope inspections: Boros...

Blow moulding and thermoforming process, Q . Write short note on blow moldi...

Housing policy and practice, how much is a 3000 words essay in the above ti...

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