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DISTRIBUTED SOLAR THERMAL: INNOVATIONS IN THERMAL STORAGE

DOI: 10.1615/AnnualRevHeatTransfer.2012004617
pages 7-35

Joshua A. Quinnell
Department of Mechanical Engineering, University of Minnesota, 111 Church Street S.E., Minneapolis, Minnesota 55455, USA

Jane H. Davidson
Department of Mechanical Engineering, University of Minnesota, 111 Church Street S.E., Minneapolis, Minnesota 55455, USA


键词: solar thermal storage, sensible, sorption, thermochemical

Abstract

Distributed solar thermal systems convert solar radiation to heat at temperatures of 150° C or less for use in residential and commercial buildings, industry, and agriculture. Systems to heat domestic water are highly efficient, providing annual efficiencies of 35%, and are commercially available worldwide. The most significant opportunity for advancement is to extend the implementation of distributed solar thermal to space heating through development of compact, long-term thermal storage materials and systems. In this paper, innovations and characterization of sensible, latent and thermochemical storage options are described. The emphasis is thermochemical sorption storage, which promises a two to tenfold improvement in energy density compared to sensibly heated water.

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