轻钢结构住宅体系节能系统的研究

THE ENERGY-SAVING SYSTEM TECHNOLOGY OF LIGHT-GAUGE STEEL STRUCTURE RESIDENCE

基于冷弯薄壁轻型钢结构住宅构造特征研发了一种具有呼吸功能的节能环保双层空气循环系统,运用Fluent、Airpak软件三维数值模拟探讨该系统对室内热环境的影响机理。考察空气循环系统各个组件在运行过程中速度场、温度场、PPD-PMV分布等各项指标特性及影响因素,据此对室内气流组织及空气品质进行评价。研究表明,空气缓冲层能为内、外空气层提供良好空气源;外空气层利用烟囱效应能动态地隔绝室内外热量;整个双层空气循环系统能够在较低能耗的前提下,改善室内热环境,为室内居住者24 h提供新鲜空气,达到节能环保的目的。

Based on the structural features of the cold-formed thin-walled steel structure residence , a energy saving environmentally friendly double-layer air circulation system with the respiratory function was developed , and Fluent＆amp;Airpak softwores were used to do 3D sumulation to explore the impact mechanism of the system on indoor thermal environment .It was examined various index properties and influencing factors including velocity field , temperature field, PPD-PMV distribution etc, from the various components of the air circulation system during operation Fluent and Airpak, have been examined , whereby to evaluate the indoor airflow and air quality .Research shows that the buffer layer of air can provide good air source for both the inner and outer air layer ; the outer layer of air can dynamically isolate indoor and outdoor heat by taking advantage of stack effect ; Under the premise of low energy consumption , the utilization of the entire double air circulation system can improve the indoor thermal environment as well as provide 24-hour fresh air for the indoor occupants , so that the purpose of energy saving and environmental protection could be achieved .