摘要
对采用不同热源加热方式的普通地板和相变地板的蓄放热性能进行了模拟研究与分析,并将模拟结果与实验数据进行了对比,验证其准确性。研究利用Fluent模拟软件建立了普通木地板、普通大理石地板、相变木地板和相变大理石地板4种箱体的几何模型,并设计了6种加热方式。通过分析模拟箱体的空腔温度、地板表面温度、相变材料(PCM)温度、液相率及储热量,研究发现:采用局部加热方式会延长地板的加热时间,并造成地板表面局部过热问题;而添加PCM、采用高导热系数的大理石,以及合理地调整热源区域布置均可在一定程度上缓解此问题;此外,局部供热方式对PCM相变程度的影响是导致相变地板温度和储热量产生变化的主要原因。
A simulation study and analysis are conducted on the heat storage and release performance of ordinary floors and phase change floors using different heat source heating methods,and the simulation results are compared with experimental data to verify their accuracy.The study establishes four box geometric models,including ordinary wood floors,ordinary marble floors,phase change wood floors and phase change marble floors,using Fluent simulation software,and designs six heating methods.By analysing the cavity temperature,floor surface temperature,phase change material(PCM)temperature,liquid fraction,and heat storage capacity of the simulated boxes,it is found that the use of local heating methods will prolong the heating time of the floor and cause local overheating on the floor surface.However,adding PCMs,using marble with high thermal conductivity,and reasonably adjusting the layout of the heat source area can alleviate this problem to a certain extent.In addition,the influence of local heating methods on the phase change degree of PCMs is the main reason for the changes in the temperature and heat storage capacity of phase change floors.
作者
王天雨
王海超
Wang Tianyu;Wang Haichao(Dalian University of Technology,Dalian)
出处
《暖通空调》
2025年第9期162-167,137,共7页
Heating Ventilating & Air Conditioning
基金
科技部中芬政府间国际科技合作项目“基于数字孪生的供热系统全网动态优化及低碳智慧调控关键技术研究”(编号:2021YFE0116200)
芬兰研究委员会学院研究员基金(编号:334205和358055)
NSFC-RS国际交流项目“气候变化下基于数字孪生的低碳供暖智慧控制”(NSFC编号:52311530087,RS编号:223541)。
关键词
供热
相变地板
相变材料
局部加热
蓄放热
数值模拟
heating
phase change floor
phase change material(PCM)
local heating
heat storage and release
numerical simulation
