Presentation on theme: "Recovered Energy Generation"— Presentation transcript:
1 Recovered Energy Generation CHPWaste Heat-to-Power Generation WorkshopMarch 2, 2005University of California, IrvineORMAT Technologies, Inc.980 Greg StreetSparks, NV USA
2 Recovered Energy Generation (REG)Recovery of residual waste heat energy with conversion to commercial grade electrical powerEconomical, practical conversion of heat energy into electrical energyUse of various “heat engines” governed by the laws of thermodynamicsSecond 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 GenerationHeat to ProcessFuel CombustionToppingPower GenerationHeat to ProcessFuel CombustionBottomingPower GenerationMechanical WorkFuel CombustionHeat to ProcessBottomingPower GenerationMechanical WorkFuel CombustionBottoming?
4 Recovered Energy Generation (REG) Target CriteriaTemperature of the heat source and cooling mediumTotal available heatState of heat source medium (Gas, Liquid, Condensable)Corrosive or erosive nature of heat sourceConsistency of heat sourceLow local demand for heat energyDemand 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 PlantsCement, Glass, Petrochem, Mineral Processing, Pulp & Paper, Metals et alProcess StreamsGases; >400F (204C)Liquids; >200F (93C)LP Steam (condensable vapors); any
6 Heat Sources for Recovered Energy Generation Combustion GasesCombustion Turbine ExhaustGas Pipeline Compressor StationsGas Processing PlantsCogeneration (CHP)Internal combustion engines
7 Heat Sources for Recovered Energy Generation Combustion GasesIncineratorsBiomassMunicipal wasteThermal OxidizersFlaresNuclear Waste?
8 ORMAT® Energy Converters (OEC) Typical Applications of Recovered Energy 1Application2Application3Application4Application5Application6Application7Heat StreamTypeChemicalPlantOilRefineryPulp andPaper MillPetrochemicalPlantCement PlantClinker CoolerDiesel GeneratorsGas TurbineBottomingLocationHotWaterLiquidDiesel OilCondensingLow PressureSteamCondensingHydrocarbons(Top Vapors)ExhaustGasesChargedAirExhaust GasesFlow Rate(tons/hr)3201561385196203.8198.5295TemperatureInlet (oC)95184105104275365172463TemperatureOutlet (oC)7080808512511010692Air CooledCondensersAir CooledCondensersCooling Water:Flow Rate(Tons/hr)750700100010001600Design PointAmbientDesign PointAmbientInlet Temp. oC102013.52728Temperature11oCTemperature2oCOutlet Temp. oC2030203737OEC Net Outputto Grid - kW70010709307801200295058251032
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 stations10,000,000 installed 30% efficiency932 MWe recovered energy potential189 MCFD usage of natural gas avoidable11,000 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 LocationsAverage power production capacity of 4.5 MW from each kiln500 MWe recovered energy potential10,000 tCO2e/day of GHG could be offset
12 Qualified Energy Recovery A “Green” Power TechnologyNEVADA: AB 429 accepts “Qualified Energy Recovery” from non electrical generating sources such as mining processes, as eligible for RPSNORTH 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 configurationValue of power generatedCapital costO & M costReturn horizon
14 Waste Heat-to-Power Applications CHP ApplicationsGeothermal Power PlantsResource Recovery: BiomassHeat Recovery - PipelinesIndustrial Waste Heat RecoveryHeat Recovery – Gas Plant1473
15 Conclusions Proven, mature, reliable technology Economically attractive compared to other new sources of powerSignificant environmental benefitsMany existing opportunities in energy intensive industries, many potential new CHP and DG applicationsMarket is responding to opportunity