General volume sizing strategy for thermal storage system using phase change material for concentrated solar thermal power plant

Ben Xu, Peiwen Li, Cholik Chan, Eric Tumilowicz

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

With an auxiliary large capacity thermal storage using phase change material (PCM), Concentrated Solar Power (CSP) is a promising technology for high efficiency solar energy utilization. In a thermal storage system, a dual-media thermal storage tank is typically adopted in industry for the purpose of reducing the use of the heat transfer fluid (HTF) which is usually expensive. While the sensible heat storage system (SHSS) has been well studied, a dual-media latent heat storage system (LHSS) still needs more attention and study. The volume sizing of the thermal storage tank, considering daily cyclic operations, is of particular significance. In this paper, a general volume sizing strategy for LHSS is proposed, based on an enthalpy-based 1D transient model. One example was presented to demonstrate how to apply this strategy to obtain an actual storage tank volume. With this volume, a LHSS can supply heat to a thermal power plant with the HTF at temperatures above a cutoff point during a desired 6. h of operation. This general volume sizing strategy is believed to be of particular interest for the solar thermal power industry.

Original languageEnglish (US)
Pages (from-to)256-268
Number of pages13
JournalApplied Energy
Volume140
DOIs
StatePublished - Feb 5 2015

Keywords

  • Concentrated Solar Power (CSP)
  • Enthalpy-based 1D transient model
  • General volume sizing strategy
  • Latent heat storage system (LHSS)
  • Phase change material (PCM)

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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