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Improved Effect for Thermal and Aero Environment of Indoor Open Spaces by Using Cool Running Water and Hybrid Ventilation

利用冷自来水和混合通风改善室内开放空间的热和空气环境效果

基本信息

批准号：
17360280
负责人：
ENAI Masamichi
金额：
$ 10万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360280/
关键词：
cool running water surface inner open space thermal environment aero environment improvement effect 改善効果ハイプリッド換気究気環境 PIV CFD

项目摘要

In this report, as the first step, transfer model of heat and moisture for horizontal running water was indicated according to balance of heat and moisture measured in the laboratory. At the second step, CFD (computer fluid dynamics) which was built with transfer model of heat and moisture was compared with actual results as a numerical verification. We need to measure actually distribution of air velocity for adjacent boundary layer on the running water surface for explaining a transfer mechanism of heat and moisture. Such distributions of air velocity on the running water surface were measured by using PIV.It is necessary to estimate by using numerical simulations before planning thermal-aero environment of indoor open spaces. At the third step, improved effects were evaluated by using numerical simulations for planning future thermal-aero environment of indoor open spaces.To design thermal-aero environment for inner open spaces, we need to know the relationship between illuminate environment and solar radiation trough the glass roofs for such spaces. It is possible to estimate thermal load for void spaces of top light type. Classification of atrium spaces was done like side-core model, center core model and linear core model. Best option was indicated from the parameter analysis of PIV.To discuss the numerical analysis by using macro-model that needs for planning of thermal-aero environment to use weak temperature distribution in inner open spaces should be continued. Also CFD analysis used cool running water surface should be continued.

本文首先根据实验室热湿平衡的测定结果，提出了水平流水的热湿传递模型。第二步，将建立的热湿传递模型与实际结果进行对比，作为数值验证。为了解释热湿传递的机理，需要实测流水表面上相邻边界层的风速分布。利用PIV测量了流动水面上的风速分布。在规划室内开放空间的热空气环境之前，有必要通过数值模拟来估计。第三步，通过数值模拟对改善效果进行评估，为未来室内开放空间的热空气环境规划提供依据，为设计室内开放空间的热空气环境，需要了解室内开放空间的采光环境与玻璃屋顶太阳辐射的关系。可以估算顶部采光型空隙空间的热负荷。中庭空间分为侧核式、中心核式和直线核式。通过对PIV参数的分析，指出了最佳的方案。对采用宏观模型进行数值分析的必要性进行了讨论，认为采用内部开放空间的弱温度分布进行热空气环境规划是必要的。另外，应继续使用冷自来水表面进行CFD分析。