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.