项目名称: 面向太阳能建筑机械通风与自然通风协同作用机理研究
项目编号: No.51208442
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 建筑环境与结构工程学科
项目作者: 段双平
作者单位: 西南科技大学
项目金额: 25万元
中文摘要: 自然通风技术是关系到建筑领域利用自然能源改善环境、实现节能减排的一项关键技术。合理利用太阳能和机械通风可以强化、诱导和组织自然通风。太阳能具有间歇性和不稳定性,仅太阳能增益自然通风是很难全天候保证建筑内热舒适性,所以需要机械通风来协同自然通风工作。本项目拟采用理论分析、实验研究和数值模拟相结合的方法,探讨太阳能与室内热源耦合作用的自然通风动态特性及机械通风与太阳能增益自然通风协同作用机理;研究太阳能与室内热源耦合作用时的气流流动与换热过程及自然通风量、室内热环境的非稳态特征;揭示机械通风与太阳能增益自然通风协同作用时,机械通风模式、机械通风系统设计参数等对自然通风和室内热环境的影响规律。本项目研究成果为具有内热源的太阳能建筑中混合通风优化设计与节能运行控制模式提供基础数据,为丰富和完善自然通风的科学理论做出贡献。
中文关键词: 太阳能;自然通风;机械通风;内热源;供暖
英文摘要: Natural ventilation is a passive ventilation method to improve indoor air quality and save energy. Solar and mechanical ventilation are used to strengthen,induce and organize natural ventilation. But solar is intermittent and unsteady. Only natural ventilation driven by solar and indoor heat source can't provide thermal comfort for people anytime during the entire day. So sometime it is very necessary to design mechanical ventilation system to work in coordination with natural ventilation. In the project, theory analysis, experiment and numerical simulation methods are used to study natural ventilation behaviour driven by solar and indoor heat source and the coordination mechanism of natural ventilation by solar and mechanical ventilation. In natural ventilation driven by solar and indoor heat source, air flow and heat transfer, the transient characteristic of natural ventilation volume and indoor thermal environment are discussed. The effect of mechanical ventilation modes and design parameters on natural ventilation and indoor thermal environment is presented when mechanical ventilation works in coordination with natural ventilation driven by solar and indoor heat source. The results provide the basic data for optimal design and energy-saving control modes of hybrid ventilation systems, which enrich and perfe
英文关键词: Solar Energy;Natural Ventilation;Mechanical Ventilation;Internal Heat Source;Heating