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1. MICROTURBINE
Presented by-
ASIF QUAMAR
1RE12ME032 1

2. • Introduction
• Microturbine overview
• Components of Microturbines
• Working Principle
• Types of Microturbines
• Comparisions
• Advantages
• Application
• Challenges
• Conclusion
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3. MicroTurbines are new type of combustion
turbine used for stationary energy generation.
The concept is evolved from automotive and
truck turbochargers, auxiliary power units (APU)
for airplanes.
Approximately the size of a refrigerator with
outputs of 25 kW to 500 kW.
They provide not only electricity , but also the
thermal energy to provide for all heating and
cooling needs
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4. Microturbine producing power, as well as heat
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5. • Commercially Available Yes (Limited)
• Size Range 25-500 kW
• Fuel Natural gas, hydrogen,
propane,
diesel
• Efficiency 20-30% (Recuperated)
• Environmental Low (<9-50 ppm) NOx
• Other Features Cogeneration (50-80°C water)
• Commercial Status Small volume production,
commercial prototypes now.
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6. • Turbo Compressor
• Combustor
• Generator
• Recuperator (Internal Heat Exchanger)
• Turbine
• Power Electronics (Rectifier & Inverter)
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8. How a Microturbine works
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Turbine rotates the
generator at high RPM which
produces electricity of high
frequency

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10. • Unrecuperated Microturbine (Simple cycle)
• Recuperated Microturbine
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11. Recuperated Microturbine
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12. Unrecuperated
• Compressed air is mixed with
fuel and burned under
constant pressure conditions.
• Efficiency 15%.
Recuperated
• A sheet metal heat exchanger
(recuperator) recovers temperature
of the air stream supplied to the
combustor.
• Efficiency 20~30%.
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13. • Small number of moving parts
• Compact size
• Lightweight
• Good efficiencies in cogeneration
• Low emission
• Can utilize waste fuels
• Long maintenance interval
• No vibration
• Less noise than reciprocating engines
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Micro turbine Cost
Capital Cost $700-$1,100/kW
O&M Cost $0.005-0.016/kW
Maintenance Interval 5,000-8,000 hrs.

15. 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

16. 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
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17.  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.
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18. • Bowman power systems
• Capstone Turbine Cooperation
• Elliott energy systems
• Turbec AB
• Ingersoll-Rand Company
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