Experimental Study on Specific Heat of Concrete at High Temperatures and Its Influence on Thermal Energy Storage

Jianwen Pan, Renxin Zou and Feng Jin
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Jianwen Pan: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Renxin Zou: Huadong Engineering Corporation Limited, Hangzhou 311122, China
Feng Jin: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

Energies, 2016, vol. 10, issue 1, 1-14

Abstract: Using concrete as a thermal energy storage (TES) material is a promising option for large-scale solar-thermal resource development and utilization. Specific heat is one of the most important characteristics for TES performance. In this paper, the half-open dynamic method based on the mixing principle is proposed and applied to measure concrete-specific heat at temperatures up to 600 °C. Measurement of the specific heat of corundum ceramic (99% Al 2 O 3 ) is first performed, and the test results illustrate the accuracy and efficiency of the proposed test method. Furthermore, concrete-specific heat tests are carried out at high temperatures. It found that the specific heat increases as the temperature rises, especially, linearly in the range of 300–600 °C, in which the concrete TES module is expected to be in operation. Finally, the effect of concrete-specific heat changes with temperature on its TES capacity is investigated, demonstrating that specific heat is of great significance for concrete TES design for concentrating solar power.

Keywords: concrete; specific heat; high temperature; thermal energy storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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