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本文研究了相变材料在主动式储能中的应用效果,通过建立低温热水相变墙板和普通热水墙板辐射供暖实验系统,实验测试了辐射供暖相变墙板和普通墙板在间歇供暖过程中的传热性能,包括墙板表面温度和表面热流,同时利用ANSYS有限元分析软件对上述2种墙板在间歇供暖过程中的传热过程进行了数值模拟。结果显示:在供暖阶段,相变墙板表面温度和热流均小于普通墙板;在停止供暖后,相变墙板表面温度和热流下降速率明显低于普通墙板;在停止供暖期间,相变墙板表面仍然能够保持一定的热流和温度向室内供暖,室内温度没有出现较大波动;实验测试结果与数值模拟结果在大多数情况下吻合良好。本文的研究结果可为热水供暖相变墙板在建筑物中的使用提供参考和依据。
This paper studies the application effect of phase change materials in active energy storage. By establishing a radiant heating experiment system for low temperature hot water phase change wallboards and ordinary hot water wallplates, experimental tests have been conducted on the radiation heating of phase change wallboards and ordinary wallboards. The heat transfer performance during the intermittent heating process includes wall surface temperature and surface heat flow. At the same time, the ANSYS finite element analysis software was used to simulate the heat transfer process of the above two types of wallboard during the intermittent heating process. The results show that: in the heating phase, the surface temperature and heat flow of the phase change wallboard are smaller than the ordinary wallboard; after the heating is stopped, the surface temperature and heat flow decrease rate of the phase change wallboard is obviously lower than that of the ordinary wallboard; during the stop heating, the phase change The surface of the wallboard is still able to maintain a certain degree of heat flow and temperature to the room heating, there is no large fluctuations in the room temperature; experimental test results and numerical simulation results in good agreement in most cases. The research results in this paper can provide reference and basis for the use of hot water heating phase change wallboard in buildings.