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CONTENTSCONTENTS
IntroductionClassificationCharacteristics curvesChallengesApplicationsRecent developmentsConclusion
INTRODUCTIONINTRODUCTION
Micro turbines are capable of producing
10 -100 watts of electrical powerIt has an energy density 10 times than
existing batteries.It can be used in power generation
applications like space vehicles, electronic devices etc…
RADIAL TYPE MICRO TURBINERADIAL TYPE MICRO TURBINE
MICRO AXIAL TYPE TURBINEMICRO AXIAL TYPE TURBINE
TURBINE ROTORTURBINE ROTOR
MECHANICAL MECHANICAL CHARACTERISTICSCHARACTERISTICS
Torque as function of speed and supply pressure
Mechanical power of the turbine
Efficiency of the turbineEfficiency of the turbine
ELECTRICAL ELECTRICAL CHARACTERISTICSCHARACTERISTICS
Electrical power
Total efficiency
CHALLENGESCHALLENGES
• Heat loss due to the high surface to volume ratio
• Cooling problems
• manufacturing the components (turbine blades)
• Generation of thermal stresses
• Design of air bearings
APPLICATIONSAPPLICATIONS
Remote areas.Space vehicles.Electronic devices.Energy supply for factories, military bases
RECENT DEVELOPMENTSRECENT DEVELOPMENTS
Coupling of SOFC to increase the efficiency
Use of ceramic for turbine blades
CONCLUSIONCONCLUSION
Micro turbine faces unique challenges for combustion in small volume.
The principal difficulties are associated with the limited residual time.
The micro turbine is in development phase.
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