Bähr, Martin

Glade, Anselm

Gollasch, Jens Oliver

Lorenz, Tom

Tran, Phong

Walden, Jasper

Institute of Transport Research:Publications

Optimal operation of a conceptional industrial energy system including a high temperature heat pump, thermal energy storage and wind power > HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 1Jasper Walden, Anselm Glade, Jens Gollasch, A. Phong Tran, Martin Bähr, Tom LorenzGerman Aerospace Center (DLR)Institute of Low-Carbon Industrial ProcessesDepartment of Simulation and Virtual DesignJasper.Walden@dlr.deOptimal operation of a conceptional industrial energy systemIntroduction• Currently process heat is provided by combustion basedtechnologies• Future industrial plants are likely to have onsite renewableenergy sourcesI. What could an electrified industrial energy system look like?II. How to model nonlinear component part load performanceefficiently?III. How to optimally operate the system with fluctuating inputparameters to minimize CO2 emissions?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 2Rissman, J., et al.: „Technologies and policies to decarbonize global industry: Review and assessment of mitigation drivers through 2070”.Applied Energy, p. 15, 2020Distribution of energy end-uses in the U.S. manufacturing sector in 2014.Optimal operation of a conceptional industrial energy systemI. What could an electrified industrial energy system look like?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 3• Constant steam demand (215 °C, 4.5 𝑀𝑊𝑡ℎ) of an industrial applicationOptimal operation of a conceptional industrial energy systemI. What could an electrified industrial energy system look like?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 4• Constant steam demand (215 °C, 4.5 𝑀𝑊𝑡ℎ) of an industrial application• System is powered by wind turbine & grid electricityOptimal operation of a conceptional industrial energy systemI. What could an electrified industrial energy system look like?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 5• Constant steam demand (215 °C, 4.5 𝑀𝑊𝑡ℎ) of an industrial application• System is powered by wind turbine & grid electricity• TES integrated with thermooil loop to control charging and discharging operation• 75 °C air as heat source for the HTHPOptimal operation of a conceptional industrial energy systemII. How to model nonlinear component part load performance efficiently?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 6• Recuperated, reverse Brayton Cycle HTHP with air as working medium• Modelled in process simulation software Ebsilon• Compressor part load performance by compressor map• Heat Exchanger with constant area & heat transfer coefficientDesign-parametersValueCOP [-] 1.45Pel [MW] 3.2Pressureratio [-]3.5𝜂𝐻𝑃 [%] 56.8Optimal operation of a conceptional industrial energy systemII. How to model nonlinear component part load performance efficiently?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 7• Map HTHP operating behaviour into nonlinear algebraic surrogate modelby parameter variation𝑃𝑒𝑙 = 𝐹𝐻𝑇𝑊𝑃 𝑇𝐼 , ሶ𝑚𝐼 , 𝑇𝐼𝐼𝐼 , 𝑁𝑇𝐼𝐼 = 𝐹𝐻𝑇𝐻𝑋 𝑇𝐼 , ሶ𝑚𝐼 , 𝑇𝐼𝐼𝐼 , 𝑁𝑇𝐼𝑉 = 𝐹𝐿𝑇𝐻𝑋 𝑇𝐼 , ሶ𝑚𝐼 , 𝑇𝐼𝐼𝐼 , 𝑁Optimal operation of a conceptional industrial energy systemII. How to model nonlinear component part load performance efficiently?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 8• Sensible Thermal Energy Storage based on EnergyNest Concrete Storage• Simple TES model based on the effectiveness of heat transfer• Uniform storage temperatureOptimal operation of a conceptional industrial energy systemII. How to model nonlinear component part load performance efficiently?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 9• Hourly historical data for:• Wind speeds• Electricity price• Grid emission factorWind powerGrid dataOptimal operation of a conceptional industrial energy systemIII. How to optimally operate the system with fluctuating input parameters to minimize CO2 emissions?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 10Wind powerGrid data• Optimization for 168 hourtime frame• Data from Week 31, 2020Optimal operation of a conceptional industrial energy systemIII. How to optimally operate the system with fluctuating input parameters to minimize CO2 emissions?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 11Optimal operation of a conceptional industrial energy systemConclusions• A conceptual industrial energy system based on a hybrid electricity source was introduced• Nonlinear HTHP part load behavior can be mapped into algebraic surrogate models• Optimal operation and TES show a high potential to reduce the CO2 emissions• Basis for many future research topics: e.g. online optimization, design optimization, process integration> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 12Questions?> HTHP Symposium > Jasper Walden  • Optimal operation of a conceptional industrial energy systemDLR.de  •  Chart 13Jasper WaldenJasper.Walden@dlr.de+49 355 355645 18German Aerospace Center (DLR)Institute of Low-Carbon Industrial ProcessesDepartment of Simulation and Virtual Design

Optimal operation of a conceptional industrial energy system

including a high temperature heat pump, thermal energy storage

and wind powe

https://elib.dlr.de/188859/1/HTHPSymposium_Presentation_Publication.pdf

Optimal operation of a conceptional industrial energy system including a high temperature heat pump, thermal energy storage and wind powe

Abstract

Similar works

Full text

Available Versions

Institute of Transport Research:Publications