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- 1. Elliott Microturbines Presented by: Steve Hillman Vice President Sale & Marketing
- 3. Integrated CHP Package ENGINE AIR INLET W/ INTAKE SILENCER ELECTRIC ACTUATOR HEAT EXCHANGER GAS COMPRESSOR RECUPERATOR POWER ELECTRONICS OIL HEAT EXCHANGER WITH FAN ENGINE / ALTERNATOR ASSEMBLY Water Inlet/ Outlet/ Overflow EXHAUST OUTLET ELECTRONICS COOLING AIR INLET FUEL INLET Elliott Units Are Turnkey Package
- 4. Recip vs Microturbine 60, 000 ~ 120, 000 RPM Electric Power Power Electronics Converter and Inverter Engine Engine Control Conventional Reciprocating Generator Set Arrangement Microturbine Generation Arrangement Conventional Genset Sizes: 10 kW – 3 MW Microturbine Size: 30 kW to 250 kW Synchronous Generator Generator Control 1,800 – 3,600 RPM Starter * Permanent Magnet Generator and Starter Gas Turbine Electric Power Engine Control
- 5. Microturbine System 7 1 2 3 4 5 6 8 9 10 1. Inlet Air 2. Compressor 3. Compressed Air 4. Recuperator 5. Combustor 6. Turbine 7. Exhaust Gas 8. Exhaust Gas Outlet 9. Alternator 10. Power Electronics 11. Power Output 11
- 7. Decision Factors • High Demand Charges – Peak Demand 8- 9 MW • Requirement to Make Facilities Energy Efficient. • Existing Boiler System was to be re- worked or replaced. • Incentives for DG technologies
- 8. Electrical Demand • Total facility demand is above 8 MW – Demand charges are high. – Goal is to reduce demand to less than 7 MW – Reduction is accomplished through • High efficiency light fixtures and appliances • Microturbine demand reduction 1.5 MW
- 9. Thermal Demand • High Pressure, High Temperature Water supplied in district heating fashion – Domestic Hot Water – Heating – Chilled Water – Ice Storage System
- 10. The Project • Bank of 15 ea. 100kW CHP Microturbine Gensets took on the boiler load. • Boiler re-worked and used as redundant system. • Fuel Supply – Natural Gas – Interruptible Rates – Back-up fuel supply = Propane
- 11. Operation • Operation is scheduled based on Thermal Demand and Peak electrical rates. • Winter – Winter rates the hot water or thermal load sets the demand of the microturbine. – Peak rates lower in winter. • Summer – In Summer time electrical peak sets demand. HEX bypass when hot water is not needed. Penalties – Peak rates higher in Summer.
- 14. 1.5 MW Microturbine Installation • Hot water is supplied in district heating fashion – Domestic Hot Water – Heating • 1.5 MW used to base load facility.
- 15. 1.5 MW Microturbine Installation Existing Boiler Housed in Building – Will remain as reserve. 33,000 Gal Hot Water Reservoir Pump Building Water flow path to and from Microturbines Bank of 15 TA100 CHP microturbines. Supply 100 kW Ea.
- 26. Microturbine System • 1. Engine inlet air to Compressor • 2. Air is compressed by Impeller. • 3. Compressed air is sent to Recuperator. • 4. Duct directs compressed air into Recuperator • 5. Recuperator heats the compressed air using exhaust energy. • 6. Compressed and now heated air is directed towards Combustion Chamber • 7. Heated Air is mixed in the Combustion Chamber with natural gas and ignited. • 8. Exhaust from combustion process is directed through turbine wheel causing alternator • to rotate, which provides an output of 105 kW. • 9. Ehaust is passed to the Recuperator to heat the Compressor delivery air. • 10. Exhaust exits the Recuperator.
- 27. Power Electronics • With Power Electronics, a microturbine is a self- induced or line-induced inverter power system. • Microturbine Starting Uses 24 VDC battery system or electric grid. • Digital Control Provides Reliable and Precise High Quality Electrical Output • Over/Under Voltage, Over/Under Frequency and Over Current Protection While in Grid or Island Mode • Power Factor Adjustment (0.8 Leading to 0.8 Lagging)
- 28. • Increases in the inlet air temperature will decrease the performance of a microturbine because of the lower air density. 0 20 40 60 80 100 120 30 40 50 60 70 80 90 100 Ambient Temperature (deg F) ElectricalOutput(kW) 22.00% 23.00% 24.00% 25.00% 26.00% 27.00% 28.00% 29.00% 30.00% 31.00% ElectricalEfficiency Electrical Output (Net) Electrical Efficiency (Net) Performance
- 29. Performance • Operating Microturbines at part loads decreases the efficiency. 0% 5% 10% 15% 20% 25% 30% 0 20 40 60 80 100 Net Electrcial Output (kW) %Efficiency Electrical Efficiency (Net)
- 30. Power Electronics • With Power Electronics, a microturbine is a self- induced or line-induced inverter power system. • Microturbine Starting Uses 24 VDC battery system or electric grid. • Digital Control Provides Reliable and Precise High Quality Electrical Output • Over/Under Voltage, Over/Under Frequency and Over Current Protection While in Grid or Island Mode • Power Factor Adjustment (0.8 Leading to 0.8 Lagging)
- 31. Voltage and Frequency conditioning Engine Alternator Output 6-phase Rectifier DC Boost Chopper IGBT Inverter Bridge Output Filter 6-phase, 2267Hz, 480~600VAC Rectified DC 600~850VDC 900V VDC After power boost PWM AC pulse train after high speed switching 400VAC/50Hz or 480VAC/60Hz Clean power After output filter• PWM : Pulse Width Modulation • IGBT : Isolated Gate Bipolar Transistor
- 32. Operating Parameters 60~120K RPM Generator and Starter Recuperator Exhaust Compressor Turbine Intake Air Fuel Inverter Electric Power Utility CombustorConverter Recuperated Cycle 550 F 80 F 450 F 900 F 1200 F 1750 F
- 33. Microturbines Designed to Operate: Simple Cycle & Recuperated Mode Natural Gas, Propane, Liquid Fuels, Low Btu Gas Current Models TA100 100 kW - World Package CHP TA100 HAP 100 kW – Hazardous Area Package TA160 160 kW Twin Pak (Coalbed Methane) Future Models TA70 70 kW - Market Identified TA200+ 200+ kW - Market Driven Product Line
- 34. Packaging The Package of the microturbine performs important functions: – Provide corrosion resistant (316L stainless steel) enclosure – Supports the cooling of the electronics & engine compartments. – Provides sound attenuation – Certified hazardous area protection – purged and pressurized – NEMA 3R weather proofing – High capacity salt fog air filtration – Integrates components to simplify installation Dimensions: Height: 78 / 106 in Net Power Output: 100 kWe (ISO) Width: 34 / 66 in Exhaust Temp. 550 deg-F (ISO) Length: 120 / 140 in Fuel Input Flow: 22.0 scfm Dry Weight: 4500 lbs
- 35. Asia Ebara Corp Hdqtrs - TA100 Monogen + Exhaust Gas Absorption Chiller
- 36. Asia Opera House – TA100 CHP + Hot Water Absorption Chiller 3 Units inside the Soundproof Wall
- 37. Asia – TA100 Monogen + Exhaust Gas Absorption Chiller
- 38. Asia – TA100 Monogen + Steam Boiler