micro turbines by asif quamar
TRANSCRIPT
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.