摘要
提出一种利用正压通风技术减少外窗冷风渗透能耗的分析方法。以外窗的冷风渗透能耗为评价指标,分析采用正压通风时对外窗冷风渗透量的作用,初步探讨正压通风技术在外窗冷风渗透节能中的应用。以上海某建筑为例,计算正压通风所需的风机额外运行能耗,结合所节约的冷风渗透能耗,分析正压通风所带来的净能耗。研究结果表明采用适当的正压通风可有效降低外窗冷风渗透能耗。
A method is presented to reduce the heating loss of cold air infiltration through external windows by using positive pressure ventilation. The infiltration energy consumption is adopted as the evaluation index of energy conservation. In terms of the index, the effect of positive pressure ventilation is analyzed on the cold air infiltration, and the method is discussed to reduce the infiltration energy consumption. Taking a building in Shanghai as an example, it calculates the value of energy consumption from additional fan running required by positive pressure ventilation. Then combined with the saving infiltration energy consumption, it analyzes the net energy savings by adopting positive pressure ventilation. The results show that a proper positive draft used is available to low the energy consumption of cold air infiltration through external windows.
出处
《建筑节能》
CAS
2013年第2期5-7,29,共4页
BUILDING ENERGY EFFICIENCY
基金
上海市教育委员会科研创新项目(12YZ111)
上海市教委重点学科建设项目(J50502)
关键词
正压通风
外窗气密性
冷风渗透
节能
positive drag
air permeability of external window
cold air infiltration
energy conservation
