Material selection and testing for thermal energy storage in solar cooling

dc.contributor.authorGil, Antoni
dc.contributor.authorOró Prim, Eduard
dc.contributor.authorPeiró Bell-lloch, Gerard
dc.contributor.authorÁlvarez, Servando
dc.contributor.authorCabeza, Luisa F.
dc.description.abstractThe goal of this study is to implement and to test a thermal energy storage (TES) system using different phase change materials (PCM) for solar cooling applications. A high temperature pilot plant able to test different types of TES systems and materials was designed and built at the University of Lleida (Spain). This pilot plant is composed mainly by three parts: heating system, cooling system, and different storage tanks. The pilot plant uses synthetic thermal oil as heat transfer fluid (HTF) and has a working temperature range from 100 to 400 C. Two different PCM were selected after a deep study of the requirements of a real solar cooling plant and the available materials in the market through literature review and DSC analysis. Finally D-mannitol with phase change temperature of 167 C and hydroquinone which has a melting temperature of 172.2 C were used at pilot plant scale. For both PCM, no hysteresis was detected, and at pilot plant only D-mannitol showed subcooling even though both showed it during the DSC analysis. An effective heat transfer coefficient between the storage material and the heat transfer fluid (HTF) was calculated. For the same boundary conditions, the energy stored by D-mannitol was higher than that for hydroquinone. Moreover, D-mannitol has polymorphism that needs to be taken into account when the material is used as PCM, but experiments in this paper showed that polymorphism did not interfere its performance as PCM.ca_ES
dc.description.sponsorshipThis work was supported by the project “Almacenamiento térmico en caliente para refrigeración solar por absorción” funded by Gas Natural and CTA (Corporación Tecnológica de Andalucía). The work was partially funded by the Spanish government (ENE2011-22722). The authors would like to thank the Catalan Government for the quality accreditation given to their research group GREA (2009 SGR 534). Antoni Gil would like to thank the Col·legi d'Enginyers Industrials de Catalunya for his research appointment. Eduard Oró would like to thank University of Lleida for his research fellowship.
dc.relation.isformatofReproducció del document publicat a
dc.relation.ispartofRenewable Energy, 2013, núm. 57, p. 366-371ca_ES
dc.rights(c) Elsevier, 2013ca_ES
dc.subjectThermal energy storageca_ES
dc.subjectPhase change materialca_ES
dc.subjectSolar coolingca_ES
dc.titleMaterial selection and testing for thermal energy storage in solar coolingca_ES
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