地面局部辐射供暖典型热环境特征化表征研究

Study on characterization of typical thermal environment forground local radiant heating

局部精细化采暖是满足室内人员舒适前提下降低采暖能耗、实现采暖能源高效利用的重要方式之一.为提高采暖效率,给精细化辐射供暖提供方法参考,本文选取具有显著工位布局要求的办公场所作为对象,对地面局部辐射供暖模块影响下,室内不同区域热环境分布情况进行典型化研究分析,得到了不同局部模块供暖工况下室内非均匀热环境分布特征.分析结果表明,局部辐射面积为16.7%时辐射区域与非辐射区域平均辐射温度相差3℃以上,具有明显的局部环境营造效果;地面局部辐射供暖辐射区域与非辐射区域不对称辐射温度差异显著;将局部辐射源设置在靠近外墙区域,可以提高整体平均辐射温度,使室内平均辐射温度分布更为均匀.本研究初步给出基于地面局部辐射供暖的典型化热环境共性特征表述,可为后续局部辐射供暖系统的精细化设计提供参考.

Local fine heating is one of the important ways to reduce heating energy consumption and realize efficient utilization of heating energy under the premise of satisfying the comfort of indoor personnel.In order to improve heating efficiency and provide a method reference for refined radiation heating,the office space with significant station layout requirements is selected as the object in this study to conduct typical research and analysis on the distribution of thermal environment in different indoor areas under the influence of ground local radiation heating modules,and the distribution characteristics of indoor non-uniform thermal environment under different local module heating conditions are obtained.The analysis results show that when the local radiation area is 16.7%,the average radiation temperature difference between the radiation area and the non-radiation area is more than 3℃,which has obvious local environment construction effect.There is a significant difference in the asymmetric radiation temperature between the radiation area and the non-radiation area of the ground local radiation heating.Setting the local radiation source near the outer wall area can increase the overall average radiation temperature and make the indoor average radiation temperature distribution more uniform.This study gives a preliminary description of the common characteristics of typical thermal environment based on ground local radiant heating,which can provide a reference for the fine design of subsequent local radiant heating systems.