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CFD Analysis Based on Human Physiological Model on Micro Climate around Human Body and Identification of Inhaled Air Quality

基于人体生理模型的CFD分析人体周围微气候及吸入空气质量识别

基本信息

批准号：
14205084
负责人：
MURAKAMI Shuzo
金额：
$ 31.2万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

We pay attention to the air-conditioner, which considering thermal comfort, inhaled air quality and energy conservation, and the material on reducing room air VOC concentration for the purpose of improving IAQ and energy problem. We study on optimal design of personal air-conditioning system and effect of adsorptive building material in reducing indoor air formaldehyde concentration. Through subjective experiments and CFD(Computational Fluid Dynamics) analysis, following findings are given,(1) Optimal design of personal air-conditioning system(a) Sensation to air flow thermal comfort is improved by the use of personal air-conditioning system. However a directly airflow toward the face and other parts of human body that are not covered with clothes makes subjects discomfort. (b) Thermal sensation thermal comfort of whole body is strikingly improved by locally cooling their heads. (c) Thermal adaptability thermal discomfort with walking exercise is eased within 5 to 10 minutes under the personal air-conditioning system. But, after further 2-3 minutes, subjects feel discomfort because of dry eyes or cold.(2) Effect of adsorptive building material in reducing indoor air formaldehyde concentration.(a) The arrangement of the adsorptive building materials in effective in reducing formaldehyde. (b) Formaldehyde is effectively reduced even if the surface area of absorptive building material is small.After this, we research thermal comfort, inhaled air quality and energy conservation in the environment used both the personal air-conditioning system which we proposed and adsorptive building material.

我们关注的是考虑热舒适性、吸入空气质量和节能的空调器，以及以降低室内空气VOC浓度为目的的材料，以改善室内空气品质和能源问题。研究了个人空调系统的优化设计和吸附性建筑材料降低室内空气中甲醛浓度的效果。通过主观实验和计算流体力学（CFD）分析，得出以下结论：（1）个人空调系统的优化设计（a）个人空调系统的使用改善了气流的热舒适性。然而，直接朝向面部和人体其他未被衣服覆盖的部位的气流会使受试者感到不适。(b)头部局部降温可显著提高全身热舒适性。(c)热适应性步行运动的热不适在个人空调系统下5 - 10分钟内缓解。但是，再过2-3分钟，受试者会因眼睛干燥或寒冷而感到不适。(2)吸附性建材降低室内空气甲醛浓度的效果。(a)吸附性建筑材料的布置对降低甲醛是有效的。(b)在此基础上，我们研究了吸附性建筑材料与我们提出的个人空调系统在环境中的热舒适性、吸入空气质量和节能效果。