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

Trade-offs in communications designs, Trade-offs in Communications Designs ...

Trade-offs in Communications Designs Satellite and Deep Space Communications               - Power is expensive to generate in space and transmission distances are eno

Ampere''s law in matlab, how can i write ampere law code in matlab ???

how can i write ampere law code in matlab ???

Mergers & acquisitions / valuing synergies, 1-calculate the present value o...

1-calculate the present value of the expected synergies. ( Assume a tax rate of 35%. a discount rate of 10% suitable for the cost oand revenue synergies combined, and inflation of

Electronics Engineering - Digital Circuits, can you help with assignment on...

can you help with assignment on above topic

Surveying construction with applications, need help with quiz 40 questions

need help with quiz 40 questions

Why would an investor buy preferred stock?, Why would an investor buy prefe...

Why would an investor buy preferred stock? A buyer that wants the benefit potential of value but wants to reduce possibility would buy recommended inventory. The buyer would rec

Fluid cleaning in cold section inspection of aircraft, Fluid Cleaning T...

Fluid Cleaning This procedure involves spraying an emulsive type surface cleaning fluid into the compressor whilst the engine is turning either on the starter motor or at low R

Designing a phone, hi um how do people design phones and stuff like da

hi um how do people design phones and stuff like da

Assembly buildings - common fault, Assembly buildings - fire risk assessmen...

Assembly buildings - fire risk assessment: Common faults found in assembly buildings are: Combustible items left in protected routes or bedroom corridors Locked exi

Fuel system inhibiting, Fuel system inhibiting. The fuel used in turbi...

Fuel system inhibiting. The fuel used in turbine engines usually contains a small quantity of water which, if left in the system, could cause corrosion. All the fuel should th

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