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Adaptive Thermal Insulation for Thermal Activation of Building Components

Felbinger, Jonina und Bürger, Inga und Linder, Marc Philipp (2021) Adaptive Thermal Insulation for Thermal Activation of Building Components. Solar World Congress 2021, 2021-10-25 - 2021-10-29, Virtual Conference.

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Kurzfassung

Buildings are mainly constituted of load-bearing components. What if we were able to thermally activate such massive components, utilize them as thermal energy storages thus increase the buildings' energy efficiency? The solid elements, as walls or ceilings, could be loaded either by using excess electricity or by deploying rooftop photovoltaic or solar thermal installations. The essential precondition to activating building masses and integrate them into the thermal management is to control the transferred heat across the energy storage boundaries. Such a controllable insulation layer can be achieved by combining the gas pressure dependent thermal conductivity of porous structures with reversible gas-solid-reactions. The heat transfer mechanism in porous insulation materials is dominated by the Knudsen effect which describes the S-shaped thermal conductivity depending on the prevalent gas pressure in the insulation panel. In the presented system a vacuum insulation panel is connected with a reversible metal hydride reaction system. By adjusting the temperature of the metal hydride the endo-/exothermal reaction can be controlled and the according pressure can be set along the equilibrium line of the thermochemical material. The integral adaptive insulation system is built of the two core components: the porous vacuum insulation panel and the metal hydride reactor. Due to the physical coupling of both units the temperature setting of the metal hydride is directly linked to the gas pressure and thus to the thermal conductivity of the insulation panel. A test bench was set up to address the key questions of the adaptive insulation system. The central challenges in terms of system dynamic and energy efficiency are the functional interaction of pore sizes, gas pressure ratios and suitable metal hydride materials and also the effect of the parameters on the switching factors or the energy consumption for the temperature control. This presentation will outline experimental results of the proof of concept and the experimentally investigated influence of different pore-sized insulation panels in combination with the metal hydride reaction system on the system behavior.

elib-URL des Eintrags:https://elib.dlr.de/147888/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Adaptive Thermal Insulation for Thermal Activation of Building Components
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Felbinger, JoninaJonina.Felbinger (at) dlr.dehttps://orcid.org/0000-0003-4382-1231NICHT SPEZIFIZIERT
Bürger, Ingainga.buerger (at) dlr.dehttps://orcid.org/0000-0002-6091-0431NICHT SPEZIFIZIERT
Linder, Marc PhilippMarc.Linder (at) dlr.dehttps://orcid.org/0000-0003-2218-5301NICHT SPEZIFIZIERT
Datum:26 Oktober 2021
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Adaptive thermal facade Thermal component activation Controllable insulation layer Variable thermal conductivity Reversible gas-solid reaction
Veranstaltungstitel:Solar World Congress 2021
Veranstaltungsort:Virtual Conference
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:25 Oktober 2021
Veranstaltungsende:29 Oktober 2021
Veranstalter :International Solar Energy Society
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Straßenverkehr
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V ST Straßenverkehr
DLR - Teilgebiet (Projekt, Vorhaben):V - NGC Fahrzeugstruktur II (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Thermische Prozesstechnik
Hinterlegt von: Felbinger, Jonina
Hinterlegt am:23 Dez 2021 14:08
Letzte Änderung:24 Apr 2024 20:46

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