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4. IEA SHC Task 42 / ECES Annex 29 – Working Group B: Applications of Compact Thermal Energy Storage

Author

van Helden, Wim, Yamaha, Motoi, Rathgeber, Christoph, Hauer, Andreas, Huaylla, Fredy, Le Pierrès, Nolwenn, Stutz, Benoit, Mette, Barbara, Dolado, Pablo, Lazaro, Ana, Mazo, Javier, Dannemand, Mark, Furbo, Simon, Campos-Celador, Alvaro, Diarce, Gonzalo, Cuypers, Ruud, König-Haagen, Andreas, Höhlein, Stephan, Brüggemann, Dieter, Fumey, Benjamin, Weber, Robert, Köll, Rebekka, Wagner, Waldemar, Daguenet-Frick, Xavier, Gantenbein, Paul, and Kuznik, Frédéric

Published
2016
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12. Adsorber heat exchanger using Al-fumarate beads for heat-pump applications – a transport study

Author

Farrusseng, David, primary, Daniel, Cécile, additional, Hamill, Conor, additional, Casaban, Jose, additional, Didriksen, Terje, additional, Blom, Richard, additional, Velte, Andreas, additional, Fueldner, Gerrit, additional, Gantenbein, Paul, additional, Persdorf, Patrick, additional, Daguenet-Frick, Xavier, additional, and Meunier, Francis, additional

Published
2021
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13. Material and Component Development for Thermal Energy Storage:Task 58 / ES Annex 33

Author

Abd, Amir, Aigenbauer, Thomas, Angerer, Michael, Bahrami, Majid, Baldini, Luca, Bauer, Dan, Bayón, Rocío, Beaupere, Noé, Beving, Max, Biedenbach, Michael, Blanchard, Didier, Brütting, Michael, Cabeza, Luisa F., Cuypers, Ruud, Daguenet-Frick, Xavier, Dannemand, Mark, de Lange , Rick, Gracia, Mónica Delgado, Diarce, Gonzalo, Djebbar, Reda, Donkers, Pim, Doppiu, Stefania, Eames, Phil, Elvins, Jon, Englmair, Gerald, Farid, Mohammed, Fellmann, Oliver, Fink, Markus, Fischer, Fabian, Frazzica, Andrea, Fumey, Benjamin, Furbo, Simon, Gantenbein, Paul, Gasia, Jaume, Gravogl, Georg, Groulx, Dominic, Gschwander, Stefan, Gunasekara, Saman, Gutierrez, Andrea, Hauer, Andreas, Haussmann, Thomas, Herzog, Thomas, Höhlein, Stephan, Issayan, Gayaney, Johannes, Kevyn, Johnson, Maike, Karabanova, Anastasiia, Kerskes, Henner, Knoll, Christian, Köll, Rebekka, Kong, Weiqiang, König-Haagen, Andreas, Kouchachvili, Lia, Kuznik, Frédéric, Lager, Daniel, Laurenz, Eric, Lazaro, Ana, Liberatore, Raffaele, Martin, Viktoria, Mastronardi, Emanuela, Mastronardo, Emanuela, Milone, Candida, Mueller, Danny, Munz, Gunther, Obermeyer, Melissa, Barrio, Elena Palomo del, Piperopoulos, Elpida, Rathgeber, Christoph, Ravotti, Rebecca, Ristić, Alenka, Rouge, Sylvie, Rouhani, Mina, Searle, Justin, Skrylnyk, Alexandre, Stamatiou , Anastasia, van Helden, Wim, Vandersickel, Annelies, Wagner, Waldemar, Walsh, Sara Mae, Weber, Rebecca, Weber, Robert, Weinberger, Peter, Zalewski, Laurent, Zettl, Bernhard, and Zsembinszki, Gabriel

Published
2020

16. IEA SHC Task 42/ECES Annex 29–Working Group B: Applications of Compact Thermal Energy Storage

Author

van Helden, Wim, Yamaha, Motoi, Rathgeber, Christoph, Hauer, Andreas, Huaylla, Fredy, Le Pierrès, Nolwenn, Stutz, Benoit, Mette, Barbara, Dolado, Pablo, Lazaro, Ana, Mazo, Javier, Dannemand, Mark, Furbo, Simon, Campos-Celador, Alvaro, Diarce, Gonzalo, Cuypers, Ruud, König-Haagen, Andreas, Höhlein, Stephan, Brüggemann, Dieter, Fumey, Benjamin, Weber, Robert, Köll, Rebekka, Wagner, Waldemar, Daguenet-Frick, Xavier, Gantenbein, Paul, and Kuznik, Frédéric

Subjects
TCM, PCM, Applications, Thermal Energy Storage
Abstract

The IEA joint Task 42 / Annex 29 is aimed at developing compact thermal energy storage materials and systems. In Working Group B, experts are working on the development of compact thermal energy storage applications, in the areas cooling, domestic heating and hot water and industry. The majority of application projects were in the field of room heating and domestic hot water. In this article, an overview is given of a large number of applications. The storage technologies used in the applications are latent heat storage, open and closed solid sorption, liquid sorption and salt hydrates and composites thereof. On a broad front, a lot of progress was made in the development of components and systems, providing knowledge and experience regarding the design, numerical modeling, building, testing and economical assessing of components and storage systems. Most important findings are that the interaction of storage materials with the materials of components can be deciding for the technical feasibility, that a number of components, like reactor, heat exchangers and evaporators are less understood than initially thought and need more development, that the inclusion of storage materials in systems generate new challenges like the occurrence of non-condensable gases and thermo-mechanical effects and that standardized and simplified system approaches are needed.

Published
2016

19. Constructal Microchannel Network for Flow Boiling in a Disc-Shaped Body.

Author

Daguenet-Frick, Xavier, Bonjour, Jocelyn, and Revellin, Rémi

Subjects
*THERMAL conductivity, *HEAT flux, *HEAT transfer, *REFRIGERANTS, *HEAT-transfer media, *COOLING
Abstract

Constructal analysis of tree-shaped microchannels for flow boiling in a disc-shaped body has been carried out to achieve an energy efficient design for chip cooling. n0 channels touch the center and np channels touch the periphery. Three different complexities have been investigated: the radial flow pattern where n0 = np; the one pairing level flow pattern where 2n0 = np; and the two pairing level flow pattern where 4n0 = np. The fluid is R-134a evaporating at a temperature of 300 K. The fluid enters under a saturated state at the inlet and exits at the periphery. Throughout this paper, the constraints are the total volume of ducts V and the radius of the disc R. The degrees of freedom are the number of channels touching the center n0, the number of peripheral channels np, and the mass flow rate. The disc, made of copper, is subjected to a heat flux on both its faces. Heat conduction has been simulated in the disc in the radial and angular directions combined with the boiling heat transfer coefficients and the pressure drops along the channels. The temperature field has been calculated and it can be observed that the highest temperature is located where the distance between two microchannels is the largest (most often at the periphery). For characterizing successive diameter ratios for complex structures, Murray's law is shown to be the best solution when using the homogeneous model for calculating the pressure drops. As a first conclusion, we can say that increasing the number of channels decreases the thermal resistance, whatever the complexity is. It is shown that the use of a radial structure with 2n0 central channels is more efficient than a one pairing level design with n0 central channels. Deeper analysis leads to different conclusions. For low pumping power, the radial flow pattern presents the lowest thermal resistance. For medium pumping power, one pairing level design shows the lowest pumping power. For higher pumping power, the design with two pairing levels exhibits the best solution. Finally, complexity is not necessarily the best solution. [ABSTRACT FROM AUTHOR]

Published
2010
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