thermal storage unit - fraunhofer · 2020-04-06 · thermal storage units. at the samet time, the...
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F R A U N H O F E R - I N S T I T U T F Ü R U m w E lT- , S I c H E R H E I T S - U N d E N E R g I E T E c H N I k U m S I c H T
I N S T I T U T S T E I l S U l z b A c H - R O S E N b E R g
2
Keywords
• Thermalstoragematerials
• Analysesforcyclestabilityandheat
capacity
• Fluctuatingthermaldischarge
• Fluegaspurification
• Processdevelopment
• Thermaldischargeutilisationconcepts
Sectors
• Chemicalindustry
•Metalandglassindustry
•Wasteincinerationplants
• Biomasspowerstations
• Constructionofcombinedheatand
powerplants
• Refrigeratingplantconstruction
• Energygeneratorsandconsumers
•Manufacturingsector
Fraunhofer Institute for
Environmental, Safety and Energy
Technology UMSICHT
Institute Branch
Sulzbach-Rosenberg
AnderMaxhütte1
92237Sulzbach-Rosenberg
Contact person
PaulMichaelRundel
Energytechnology
Telephone+499661908-437
Director
Prof.Dr.AndreasHornung
Telephone+499661908-403
www.umsicht-suro.fraunhofer.de
www.umsicht.fraunhofer.de
1 Demonstration scale fixed-bed
heat storage unit for the investiga-
tion of dust exposure effects.
Dependentontheprocess,wasteheatis
oftenproducednotonaconstant,but
onafluctuatinglevel.Especiallyinenergy
intensiveindustrialsectors,considerable
amountsofwasteheatwithapotentially
usabletemperaturelevelareproduced.
Newinnovativeconceptsenablethecon-
versionofthiswasteheattohigh-quality
processenergy,therebyincreasingthe
overallenergyefficiency.
Thermalstorageunitsmakeuseofboth
sensitiveheatandthephasechangeenergy
ofselectedmaterials.Theyareherebyable
toproduceatemporaldecoupledand
constantheatflowforvaryingdurations,
therebymatchingheatsupplyrequirements
ofprocesses.Theheatflowgeneratedby
thestoragesystemcanforexamplebe
usedforthegenerationofprocesssteamor
forpowergenerationinacombinedheat
andpowerprocess.
THERMAL STORAGE UNIT CONVERSIONOFWASTEHEATTOHIGH-QUALITYPROCESSENERGY
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F R A U N H O F E R I N S T I T U T E F O R E N V I R O N M E N TA L , S A F E T Y A N D E N E R G Y T E C H N O L O G Y U M S I C H T
I N S T I T U T E B R A N C H S U L Z B A C H - R O S E N B E R G
1
09/1
3
Aftertheselectionofasuitedstorage
material,surveysregardingthelong-term
stabilityandloadingand/ordischargeare
carriedoutatthedemonstrationcenter
ofFraunhoferUMSICHT.Itispossibleto
simulateheatflowswithtemporaltempe-
raturevariationsandvaryingdustloadin
ordertorepresenttheapplicationcaseas
application-orientedaspossible.Anintense
supportandevaluationofthemeasure-
mentdataallowsforthedeterminationof
theoptimumoperationparametersforyour
wasteheatutilisationconceptwhichwe
willsupportduringitsimplementation.
Your benefits
FraunhoferUMSICHTlooksbackonmany
yearsofexpertiseintheareaofthermal
energystorageanditsapplicationinthe
processes.Indifferentpilotplants,bulk
materialsandPCMwereinvestigated
concerningtheirphysicalcharacteristicsas
thermalstorageunits.Atthesametime,
thefunctionofthefluegaspurificationwas
analysedandverifiedforthebulkmaterial
storageunits.Moreover,thermo-chemical
storagematerialsarealsopartofthe
portfolioofFraunhoferUMSICHT.
Thermal storage units concept
• Definitionoftheapplicationcase
• Identificationandassessmentofnew
materialsystemsforheatstorage
• Testofstoragemedia(phasechange
material,bulkmaterials)
• Analysesregardinglong-termstability
andrateofefficiency
• Trialsinthetechnicalcenterwithash/
dust-loadedexhaustgases
•Measurementserieswithfluctuating
wasteheatflows
• Verificationofpotentialoptimisation
measures
Our service
Inaccordancewithyourapplication,
FraunhoferUMSICHTanalysesthe
occurringphysicalstressofthelatentor
sensitivestoragematerial–suchasthedust
loadinexhaustgas–anddefinescertain
minimumrequirementsforthesystem.
Relevantparametersare,forexample,
theloadingtemperatureandnumberof
cycles.Basedonthedefinedrequirements
profile,potentialstoragematerialsare
definedandinformationregardingthe
availabilityandpricelevelofthesubstances
aredetermined.
1 Demonstration center Fraunhofer
UMSICHT Institute branch Sulzbach-
Rosenberg.
2 High-temperature storage material.
3 Sodium acetate trihydrate with solid-
liquid phase transition for storage of
latent heat.
1
2 Alumin ium ox ide Volcan ic rock
3
Generation of a continuous and need-based load profile
Thermal energy storage
In-process useConversion into electricity / CHP
Refrigeration Local-/ District heating
Heat sink
Useful heat
Load profile of waste heat before storage
Q
t
QMax
QMin
Q
t
QMax
QMin
Load profile of waste heat after storage
QMittel
t
Q
Industrial process
Heat source
Steam Water Thermal oil Exhaustair