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Passive room conditioning using phase change materials—Demonstration of a long-term real size experiment [in press]

Sonnick, S.; Erlbeck, L.; Gaedtke, M.; Wunder, F.; Mayer, C.; Krause, M. J.; Nirschl, H.; Rädle, M.

Abstract:
The thermal properties of lightweight buildings can be efficiently improved by using phase change materials (PCMs). The heat storage capacity of the building can be extended exactly at the desired temperature level, which leads to an enormous increase in residential comfort. This is shown in the present paper using the example of a prefabricated wooden house. The house was divided into two identical rooms. One of them was equipped with almost one ton of phase change material based on salt hydrates with a melting temperature of approx. 21°C. The material was encapsulated in 1-l Polyethylene containers and installed in two back-ventilated layers inside of the walls. The house was monitored for a period of 87 days in terms of temperatures, solar radiation and air velocity inside the PCM wall system. A considerable temperature buffering could be observed in the PCM room compared to the reference room. An overall reduction of the temperature fluctuations of 57% and a reduction of the day/night fluctuations of 62% compared to the reference room could be obtained. In addition, a prediction regarding the energy demand of such buildings is discussed on the basis of a simulation program. ... mehr

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DOI: 10.5445/IR/1000118688
Veröffentlicht am 04.05.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0363-907X, 1099-114X
KITopen-ID: 1000118688
Erschienen in International journal of energy research
Bemerkung zur Veröffentlichung cited By 0
Vorab online veröffentlicht am 01.04.2020
Schlagwörter latent heat storage, phase change material, salt hydrates, temperature stabilization, thermal comfort temperature, thermal energy storage, wooden house
Nachgewiesen in Web of Science
Scopus
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