基于定形相变材料的相变砂浆热力学性能

王艳; 曾长女; 李皖皖; 孙立军

doi:10.3799/dqkx.2023.102

Volume 48 Issue 12

Dec. 2023

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Article Navigation > Earth Science > 2023 > 48(12): 4680-4688

Wang Yan, Zeng Changnü, Li Wanwan, Sun Lijun, 2023. Thermodynamic Performance of Phase Change Mortar Based on Shape-Stabilized Phase Change Material. Earth Science, 48(12): 4680-4688. doi: 10.3799/dqkx.2023.102

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Wang Yan, Zeng Changnü, Li Wanwan, Sun Lijun, 2023. Thermodynamic Performance of Phase Change Mortar Based on Shape-Stabilized Phase Change Material. Earth Science, 48(12): 4680-4688. doi: 10.3799/dqkx.2023.102

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Thermodynamic Performance of Phase Change Mortar Based on Shape-Stabilized Phase Change Material

doi: 10.3799/dqkx.2023.102

1.
School of Energy and Environment Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
2.
College of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China
3.
China Railway 14th Bureau Group Corporation Limited, Jinan 250101, China

Received Date: 2022-08-15
Available Online: 2024-01-03
Publish Date: 2023-12-25

Abstract

Abstract

Ordinary mortar often produces thermal deformation and cracks when it is applied. However, the low thermal conductivity of the existing phase change mortar easily leads to insufficient phase change and low energy storage efficiency, resulting in low thermal adaptability. Thus, it cannot effectively control the development of deformation, stress and fracture induced by temperature change. In this paper, paraffin-based phase change materials are used to prepare energy storage mortar, and by optimizing the three-dimensional microscopic parameters such as the specific surface area and thickness of the thermal conductivity enhancer, the focus is on improving the thermal conductivity of the phase change matrix and the energy storage rate of the phase change mortar, thereby improving its thermal adaptability. A thermal test platform was built to test its thermal performance including the energy storage and the thermal strain development with time. It is concluded that when the phase change matrix material was mixed with 30%, the surface temperature of the mortar block was lower by 9.7 ℃ than that of the ordinary mortar block, and the thermal strain was reduced by 27.54%, indicating that the phase change material improved the heat storage efficiency and significantly improved its thermal properties of self-controlled temperature.
- phase change energy storage mortar,
- heat storage capacity,
- thermal strain,
- mechanical property

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References(32)

References

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Thermodynamic Performance of Phase Change Mortar Based on Shape-Stabilized Phase Change Material

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