Micro Turbine Ppt

5/24/2018 Micro Turbine Ppt

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MICROTURBINE

TECHNICAL

SEMINAR

PRESENTED BY

K.NARESH (13881D5404)

Under the Guidance of:

Prof.D.Shobha Rani (Phd)Professor&HOD


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INTRODUCTION

Micro turbine is new type of combustion turbine used forstationary energy generation.

It is also called as TURBO ALTERNATOR.

Approximately the size of a refrigerator with outputs of 25

to 500 kW.

They provide not only electricity , but the thermal energyto provide for all heating and cooling needs.


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WHAT IS A MICROTURBINE

They evolved from automotive and truck turbochargers,auxiliary power units for airplanes

It comprised of a compressor, combustor, turbine,alternator, recuperator and generator.

Waste heat recovery can be used with these system toachieve greater efficiency upto 80%.


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COMPONENETS OF A MICROTURBINE

Turbo Compressor

Combustor

Generator

Recuperator

Turbine

Power Electronics


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WORKING PRINCIPLE

Microturbine engine has only one moving part, basically ashaft.

At one end of the shaft is a turbine wheel, at the oppositeend of the shaft is permanent magnet electric generator,and at the mid point of that shaft is an air impeller wheel(air compressor).

Compressor drawing air in it an compressing it, and thenpumping it into combustor.


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TYPES OF MICROTURBINE

There are two types of Microturbines

Unrecuperated (simple cycle ) Microturbine

Recuperated Miroturbine.


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UNRECUPERTED MICROTURBINE

In simple cycle or recuperated turbine, compressed air ismixed with fuel and burned under constant pressure

conditions.

Simple cycle Microturbines have lower efficiencies around15%.

It has lower capital costs, higher reliability.


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RECUPERTED TYPE

Recuperated units use a sheet metal heat exchanger thatrecovers temperature of the air stream supplied to the

combustor.

Further exhaust heat recovery can be used in cogenerationconfiguration.

It has higher efficiencies around 30-40%.


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RECUPERATED MICROTURBINE


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CHARACTERITICS OF MICROTURBINES

Distributed generation

Quality power and reliability

Stand by power

Boost power

Low cost energy

Combined heat and power (cogeneration)


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DISTRIBUTED ENERGY GENERATION

Energy produced in thermal and hydro electric powerplants is distributed to the users through network of line

called the power grid.

On site power generation means power is generated rightwhere it is needed.


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ADVANTAGES OF DISTRIBUTED GENERATION

The losses during power transmission are greatly reduced.

The combined heat and power (CHP) technology can beapplied to microturbine to get 80% efficiency.

This lowers emission and operating cost and increase

efficiency.


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ADVANTAGES

Small number of moving parts

Compact size

Lightweight

Good efficiencies in cogeneration

Low emission


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Can utilize waste fuels

Long maintenance interval

No vibration

Less noise than reciprocating engines


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APPLICATIONSOF MICROTURBINES

Combined heat and power (co-generation)

Distributed power generation

Hospitals

Backup generators

Vehicle applications

Hybrid vehicle(microturbine to high speed alternator)

Hybrid vehicle (microturbine and fuel cell together)


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MICROTURBINE MANUFACTURERS

Bowman power systems

Capstone Turbine Cooperation

Elliott energy systems

Turbec AB

Ingersoll-Rand Company


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ECONOMICS

Capital cost ranges from $700-$1100 /KW and targeting a

future cost below $650/KW.

Maintanance cost $0.005-0.016\kw

Maintenance Interval: 5,000-8,000hrs


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CONCLUSION

Nowadays Microturbines are becoming wide spread fordistributed power and combined heat and powerapplications.

There is very definitely a trend toward installingmicroturbine system onsite not only for generating electricpower , But also for meeting site heating and coolingneeds.

Typical micro turbine efficiencies are 25 to 35%. When wecombined heat and power cogeneration system, efficienciesof greater than 80 percent are commonly achieved.


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THANK YOU

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Micro Turbine Ppt

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