micro turbines by asif quamar

WELCOME

SEMINAR ON MICRO TURBINE

PRESENTED BY

Asif QuamarUSN-1RE12ME032

CONTENTS

IntroductionComponents of Micro TurbinesCharacteristic of Micro TurbinesAdvantagesEconomics of Micro TurbinesApplicationsChallengesRecent developmentConclusion

INTRODUCTION Micro turbines are small combustion turbines with outputs

of 25 kW to 500 kW. Moderate cost and efficiency High-frequency output is rectified (and inverted again in

ac micro grids). Generator output frequency is in the order of a few kHz (e.g. 1600 Hz for Capstone’s 30 kW micro turbine).

Power shaft rotates at high speeds, usually on the order of 50 000 to 120 000 rpm

Very reliable technology (Essentially micro turbines are aircraft’s APU’s). Critical parts: bearings and generator.

Generator technologies: Synchronous and permanent magnet

COMPONENETS OF A MICROTURBINE

Turbo-Compressor Package Generator Recuperators Air bearings Power Electronics

CHARACTERISTIC OF MICRO TURBINE

Distributed generation Quality power and reliability Stand-by power Peak shaving Boost power Low-cost energy Combined heat and power (cogeneration)

ADVANTAGES

Small number of moving parts,Compact sizeGood efficiencies in cogenerationLightweight Low emissions Can utilize waste fuels Long maintenance intervals No vibrations Less noise than reciprocating engines

ECONOMICS OF MICRO TURBINES

Micro turbine CostCapital Cost $700-$1,100/kWO&M Cost $0.005-0.016/kWMaintenance Interval 5,000-8,000 hrs.

APPLICATIONS

Peak shaving and base load power (grid parallel) Combined heat and power (co-generation) Distributed power generation Stand-alone power Backup/standby power Primary power with grid as backup Micro grid Resource recovery Transportation applications

CHALLANGES

Heat loss due to the high surface to volume ratioCooling problemsmanufacturing the components (turbine blades)Generation of thermal stressesDesign of air bearings

RECENT DEVELOPMENTS

Coupling of SOFC to increase the efficiencyUse of ceramic for turbine blades

CONCLUSION Micro turbine can use low grade of fuel very effectively like waste

gases, sour gases etc. Thus micro turbine gives chance of low fuel cost and less emission. The dimensions of micro turbine comparatively small by which it can

be installed at field where power is consumed. Micro turbine is also effective in CHP operation. In India the micro turbine is quite useful. The power shortage effect can be solved using micro turbine, using

fuels like biogas, etc.

India the technology is still underdevelopment so the present seminar is an honest attempt to introduce micro turbine technology in India for solving the problem of power generation in future.