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太阳能烟囱热压强化自然通风对室内热环境的影响

作者:时间:2014-06-12点击数:

全文下载:2013010066

井光娥, 周艳, 李庆领*

(青岛科技大学 机电工程学院,山东 青岛 266061)

摘要:自然通风是用来解决夏季室内过热问题常用的技术之一。由于风压通风的局限性,利用太阳能烟囱热压强化自然通风是一种有效的节能方法。研究采用Fluent软件对在不同太阳辐射量下太阳能烟囱强化被动式太阳房自然通风对室内热环境的影响进行模拟。结果表明:在太阳能烟囱的热压作用下,室内空气流动速度受到太阳能烟囱的“烟囱效应”的影响也有明显的提高;室温随着进深和高度方向略有增加但增幅不大;室内压强随着房间进深和高度的增加有所提高,随着太阳辐射能增加而有所降低。因此,利用太阳能烟囱可以提高室内空气的流通速度,且可达到改善室内热环境的目的。

关键词:自然通风; 热压通风; 太阳能烟囱; 热环境; 数值模拟

中图分类号: TU 832文献标志码: A

Effect of Natural Ventilation Strengthened by Solar Chimney Hot-pressing on Indoor Heat Environment

JING  Guang-e, ZHOU Yan, LI  Qing-ling

(College of Electromechanical Engineering, Qingdao University of Science   and Technology, Qingdao 266061,China)

Abstract: Natural ventilation is the common technique to solve the problem of indoor overheats in summer. Considering the limitation of natural ventilation, the use of solar chimney hot-pressing to strengthen the natural ventilation is an effective energy-saving method. In this paper, by using the Fluent software, the effect of natural ventilation strengthened by solar chimney hot-pressing on indoor heat environment is simulated in different solar radiation. The results show that because of the effect of “Chimney effect” of the solar chimney, the indoor air flow speed has significantly improved under the action of solar chimney hot-pressing. The room temperature has increased slightly along the room depth and height direction. The indoor pressure has increased with the increase of room depth and height, but it has decreased with the increase of solar radiation energy. Therefore, the indoor air flow speed can be increased by using the solar chimney and can achieve the purpose of improving the indoor heat environment.

Key words: natural ventilation; hot-pressing ventilation; solar chimney; thermal environment; numerical simulation

收稿日期:2012-02-17

作者简介: 井光娥(1984—),女,硕士研究生.*通信联系人.

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