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Adaptive insulation layer to enable thermal activation of building structures: Thermochemical reactor as control unit

Felbinger, Jonina and Linder, Marc (2023) Adaptive insulation layer to enable thermal activation of building structures: Thermochemical reactor as control unit. CEES 2023 Construction, Energy, Environment & Sustainability, 27.06..30.06.2023, Funchal, Portugal.

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Thermal activation of existing building masses can significantly increase the energy efficiency of buildings by using them as thermal energy storage. To achieve this, it is essential to control the heat transfer across the massive components such as walls or ceilings. This can be achieved by applying a controllable insulation layer, which combines 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. By employing thermochemical materials, the gas pressure in the vacuum insulation panel can be precisely controlled along the equilibr ium line by adjusting the reaction temperature. This allows for precise control of the heat flux through the insulation panel and enables the thermal activation of building masses. The thermochemical reactor is a key component in the integral adaptive insulation system. The contribution will outline a novel reactor concept addressing the central challenges of accurate pressure adjustment, system dynamics and energy efficiency. We will introduce the novel reactor design and present substantial experimental results on the reactor characterization as well as the proof of concept of the controllable insulation layer as an further development of a switchable insulation layer.

Item URL in elib:https://elib.dlr.de/196061/
Document Type:Conference or Workshop Item (Speech)
Title:Adaptive insulation layer to enable thermal activation of building structures: Thermochemical reactor as control unit
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Felbinger, JoninaUNSPECIFIEDhttps://orcid.org/0000-0003-4382-1231UNSPECIFIED
Date:June 2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Thermally activated building structures, TABS, Adaptive thermal insulation, Controllable heat flux, Metal hydrides, Knudsen effect
Event Title:CEES 2023 Construction, Energy, Environment & Sustainability
Event Location:Funchal, Portugal
Event Type:international Conference
Event Dates:27.06..30.06.2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - FFAE - Fahrzeugkonzepte, Fahrzeugstruktur, Antriebsstrang und Energiemanagement
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Felbinger, Jonina
Deposited On:22 Aug 2023 17:12
Last Modified:22 Aug 2023 17:12

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