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Thermal Storage Effect Analysis of Floor Heating Systems Using Latent Heat Storage Sheets

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Abstract

The thermal energy storage (TES) is an energy storage method implemented to reduce the heating energy consumption of buildings by utilizing a high-efficiency heating system and a TES system. Therefore, in this study, a TES system is applied to a high-efficient floor heating system. Various methods are available to utilize the sensible heat and latent heat for TES, and a phase change material (PCM) that can store the latent heat is used in this study. The PCM is used in the form of a heat storage sheet. The physical property analysis results show that the phase change interval of the PCM was 17–32 °C, the latent heat amount was 40.39 J/g, and the specific heat was 1.5 J/(g K). The dynamic heat analysis confirmed the peak temperature rise during heating, and the maximum value at the surface was 1.04 °C. In addition, during cooling, a cooling delay time of up to 5 h was observed due to the heat storage effect of the PCM. Therefore, it is possible to store thermal energy by using a material called PCM, and the saved heat energy can reduce the heating energy requirement of buildings.

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Abbreviations

Q :

Heat flow (W)

K :

Heat transfer coefficient (W/(m2 °C))

A :

Heat transfer area (m2)

dT :

Temperature difference (°C)

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Acknowledgements

This research was supported by a grant (19RERP-B082204-06) from Residential Environment Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. The authors would like to express their gratitude to the DIC Corporation for providing heat storage sheet applied in the experimental setup.

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  1. Department of Architecture and Architectural Engineering, Yonsei University, Seoul, 03722, Republic of Korea

    Beom Yeol Yun, Sungwoong Yang, Hyun Mi Cho, Seunghwan Wi & Sumin Kim

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Yun, B.Y., Yang, S., Cho, H.M. et al. Thermal Storage Effect Analysis of Floor Heating Systems Using Latent Heat Storage Sheets. Int. J. of Precis. Eng. and Manuf.-Green Tech. 6, 799–807 (2019). https://doi.org/10.1007/s40684-019-00131-3

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