Volume sizing for thermal storage with phase change material for Concentrated Solar Power plant

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

With a large capacity thermal storage system using phase change material (PCM), Concentrated Solar Power (CSP) is a promising technology for high efficiency of 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). While the dualmedia sensible heat storage system has been well studied, a dualmedia latent heat storage system (LHSS) still needs more attention and study; particularly, the sizing of volumes of storage tanks considering actual operation conditions is of significance. In this paper, a strategy for LHSS volume sizing is proposed, which is based on computations using an enthalpy-based 1D model. One example of 60MW solar thermal power plant with 35% thermal efficiency is presented. In the study, potassium hydroxide (KOH) is adopted as PCM and Therminol VP-1 is used as HTF. The operational temperatures of the storage system are 390°C and 310°C, respectively for the high and low temperatures. The system is assumed to operate for 100 days with 6 hours charge and 6 hours discharge every day. From the study, the needed height of the thermal storage tank is calculated from using the strategy of tank sizing. The method for tank volume sizing is of significance to engineering application.

Original languageEnglish (US)
Title of host publicationASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
PublisherWeb Portal ASME (American Society of Mechanical Engineers)
ISBN (Electronic)9780791845868
DOIs
StatePublished - Jan 1 2014
EventASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology - Boston, United States
Duration: Jun 30 2014Jul 2 2014

Publication series

NameASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
Volume1

Other

OtherASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
CountryUnited States
CityBoston
Period6/30/147/2/14

Keywords

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

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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    Xu, B., Li, P., & Chan, C. (2014). Volume sizing for thermal storage with phase change material for Concentrated Solar Power plant. In ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology (ASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology; Vol. 1). Web Portal ASME (American Society of Mechanical Engineers). https://doi.org/10.1115/ES2014-6321