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Recovered Energy Generation ORMAT Technologies, Inc. 980 Greg Street Sparks, NV 89431-6039 USA www.ormat.com CHP Waste Heat-to-Power Generation Workshop.

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Presentation on theme: "Recovered Energy Generation ORMAT Technologies, Inc. 980 Greg Street Sparks, NV 89431-6039 USA www.ormat.com CHP Waste Heat-to-Power Generation Workshop."— Presentation transcript:

1 Recovered Energy Generation ORMAT Technologies, Inc. 980 Greg Street Sparks, NV USA CHP Waste Heat-to-Power Generation Workshop March 2, 2005 University of California, Irvine

2 Recovered Energy Generation (REG) Recovery of residual waste heat energy with conversion to commercial grade electrical power Economical, practical conversion of heat energy into electrical energy Use of various heat engines governed by the laws of thermodynamics Second Law of Thermodynamics, heat engine efficiency is limited by the difference in the temperature of the heat source and the surroundings

3 Cogeneration CHP (Sequential use of energy) Power Generation Heat to Process Fuel Combustion Topping Power Generation Heat to Process Fuel Combustion Bottoming Power Generation Mechanical Work Fuel Combustion Bottoming? Power Generation Mechanical Work Fuel Combustion Heat to Process Bottoming

4 Recovered Energy Generation (REG) Target Criteria Temperature of the heat source and cooling medium Total available heat State of heat source medium (Gas, Liquid, Condensable) Corrosive or erosive nature of heat source Consistency of heat source Low local demand for heat energy Demand for electrical power (Internal, External) Site specific requirements (Space, existing power distribution, value of generated power, cooling medium)

5 Heat Sources for Recovered Energy Generation Industrial and Process Plants – Cement, Glass, Petrochem, Mineral Processing, Pulp & Paper, Metals et al Process Streams Gases; >400F (204C) Liquids; >200F (93C) LP Steam (condensable vapors); any

6 Heat Sources for Recovered Energy Generation Combustion Gases – Combustion Turbine Exhaust Gas Pipeline Compressor Stations Gas Processing Plants Cogeneration (CHP) – Internal combustion engines Gas Pipeline Compressor Stations Gas Processing Plants Cogeneration (CHP)

7 Heat Sources for Recovered Energy Generation Combustion Gases – Incinerators Biomass Municipal waste Thermal Oxidizers Flares Nuclear Waste?

8 ORMAT ® Energy Converters (OEC) Typical Applications of Recovered Energy Chemical Plant Hot Water Application 1 Application 2 Pulp and Paper Mill Condensing Low Pressure Steam Petrochemical Plant Condensing Hydrocarbons (Top Vapors) Application 3 Application 4 Cement Plant Clinker Cooler Application 5 Exhaust Gases Gas Turbine Bottoming Application 6 Application 7 Charged Air Air Cooled Condensers Design Point Ambient Temperature 11 o C Exhaust Gases Air Cooled Condensers Design Point Ambient Temperature 2 o C Diesel Generators Heat Stream Type Flow Rate (tons/hr) Temperature Inlet ( o C) Temperature Outlet ( o C) Cooling Water: Flow Rate (Tons/hr) Inlet Temp. o C Outlet Temp. o C OEC Net Output to Grid - kW Location Oil Refinery Liquid Diesel Oil

9 US REG Market Potential Organic Rankine Cycle Bottoming on Combustion Powered Compressors

10 US REG Market Potential Organic Rankine Cycle Bottoming on Gas Turbine Powered Compressors Over 1,400 simple cycle gas turbines for gas compression at more than 600 stations 10,000,000 installed 30% efficiency 932 MWe recovered energy potential 189 MCFD usage of natural gas avoidable 11,000 tCO2e/day of GHG could be offset

11 US REG Market Potential Organic Rankine Cycle Bottoming on Cement Plants Over 230 Cement kilns with 116 Cement Plant Locations Average power production capacity of 4.5 MW from each kiln 500 MWe recovered energy potential 10,000 tCO2e/day of GHG could be offset

12 Qualified Energy Recovery A Green Power Technology NEVADA: AB 429 accepts Qualified Energy Recovery from non electrical generating sources such as mining processes, as eligible for RPS NORTH DAKOTA: Pipeline Compressor GT Exhaust Gas Energy Recovery Is eligible for green tags or green energy sales SOUTH DAKOTA: Consider these projects as renewable energy resources OTHERS: Under Consideration in Many States

13 Economics Economics vary by application –Heat source utilization –Physical configuration –Value of power generated –Capital cost –O & M cost –Return horizon

14 Resource Recovery: BiomassGeothermal Power Plants Industrial Waste Heat RecoveryHeat Recovery – Gas PlantHeat Recovery - Pipelines 1473 Waste Heat-to-Power Applications CHP Applications

15 Conclusions Proven, mature, reliable technology Economically attractive compared to other new sources of power Significant environmental benefits Many existing opportunities in energy intensive industries, many potential new CHP and DG applications Market is responding to opportunity


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