Stengler, Jana and Fischer, Eva and Weiss, Julius and Linder, Marc (2018) Experimental Results of a 1 kW Heat Transformation Demonstrator based on a Gas-Solid Reaction. Heat Powered Cycles Conference 2018, 16.-19. Sept. 2018, Bayreuth, Deutschland.
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Abstract
Heat transformation based on reversible chemical reactions has gained significant interest due to the high achievable output temperatures. These chemical heat pumps use a reversible gas-solid reaction in which the back and forward reaction take place at different temperatures: by running the discharge reaction at a higher temperature than the loading reaction, the released heat is thermally upgraded. In this work, we report on the experimental investigation of a salt hydrate with regard to its use for heat transformation in the temperature range from 180 °C to 300 °C on a 1 kW scale. The reaction temperature is set by adjusting the pressure of the gaseous reactant, water vapor, in a range from 1 kPa up to 0.6 MPa. In our prior experimental studies, we found the properties of the solid bulk phase to be subject to considerable changes due to the chemical reaction: amongst others, the particle size distribution shifts, resulting in agglomeration and altered bulk permeability. In order to better understand how this affects the thermal performance of a thermochemical reactor, we combine our experimental work with a modelling approach. Our current work includes the development of a reactor concept that allows handling gas-solid reactions at high specific thermal powers as well as an easy scale-up for industrial applications.
Item URL in elib: | https://elib.dlr.de/121962/ | |||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | |||||||||||||||
Title: | Experimental Results of a 1 kW Heat Transformation Demonstrator based on a Gas-Solid Reaction | |||||||||||||||
Authors: |
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Date: | 17 September 2018 | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | No | |||||||||||||||
In ISI Web of Science: | No | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | Heat Transformation, Thermochemical Reaction, Chemical Heat Pump, Thermal Upgrade, Gas-Solid Reaction | |||||||||||||||
Event Title: | Heat Powered Cycles Conference 2018 | |||||||||||||||
Event Location: | Bayreuth, Deutschland | |||||||||||||||
Event Type: | international Conference | |||||||||||||||
Event Dates: | 16.-19. Sept. 2018 | |||||||||||||||
HGF - Research field: | Energy | |||||||||||||||
HGF - Program: | Storage and Cross-linked Infrastructures | |||||||||||||||
HGF - Program Themes: | Thermal Energy Storage | |||||||||||||||
DLR - Research area: | Energy | |||||||||||||||
DLR - Program: | E SP - Energy Storage | |||||||||||||||
DLR - Research theme (Project): | E - Thermochemical Processes (Storage) | |||||||||||||||
Location: | Stuttgart | |||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Thermal Process Technology | |||||||||||||||
Deposited By: | Stengler, Jana | |||||||||||||||
Deposited On: | 19 Oct 2018 09:41 | |||||||||||||||
Last Modified: | 19 Oct 2018 09:41 |
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