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Energies 2017, 10(1), 33; doi:10.3390/en10010033

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

1
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
2
Huadong Engineering Corporation Limited, Hangzhou 311122, China
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Calise
Received: 18 September 2016 / Revised: 21 December 2016 / Accepted: 23 December 2016 / Published: 29 December 2016
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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% Al2O3) 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. View Full-Text
Keywords: concrete; specific heat; high temperature; thermal energy storage concrete; specific heat; high temperature; thermal energy storage
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Pan, J.; Zou, R.; Jin, F. Experimental Study on Specific Heat of Concrete at High Temperatures and Its Influence on Thermal Energy Storage. Energies 2017, 10, 33.

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