2026-04-17T06:29:51Zhttps://recercat.cat/oai/request

oai:recercat.cat:10459.1/477482024-12-05T22:21:55Zcom_2072_3622col_2072_479130

2024-12-05T22:21:55Z urn:hdl:10459.1/47748 Improvement of a thermal energy storage using plates with paraffin–graphite composite Marín, José M. Zalba, Belén Cabeza, Luisa F. Mehling, Harald This work aims at designing a thermal energy storage (TES) using air as heat transfer medium, efficient mainly for free-cooling but also for other applications, improving the low heat transfer rates dues to the thermal conductivity of the materials usually employed in these systems, phase change materials (PCM). In this paper, free-cooling means the storage of cold from the night to be used during the day to cool down a room. An experimental set-up has been constructed to simulate the application. The loading and unloading processes (melting and freezing of the PCM) have two disadvantages: a relative long duration, in the range from 3 to 8 h, and a very high power consumption of the fans. Using a porous matrix of graphite where the PCM is embedded, both handicaps can be noticeably overcome. The application is studied, both experimentally and numerically. This work was partially funded by the Spanish project DPI2002-04082-C02-01 2003-2005 (Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica 2000–2003), for the Government of Aragón (DGA) and the Research Vicerectorate of the University of Zaragoza. 2024-12-05T22:21:55Z 2024-12-05T22:21:55Z 2015-01-28T09:31:14Z 2025-01-01 2005 article publishedVersion http://hdl.handle.net/10459.1/47748 MICYT/PN2000-2003/DPI2002-04082-C02-01 Reproducció del document publicat a https://doi.org/10.1016/j.ijheatmasstransfer.2004.11.027 International Journal of Heat and Mass Transfer, 2005, núm. 48, p. 2561–2570 (c) Elsevier, 2005 info:eu-repo/semantics/restrictedAccess Elsevier