建筑气密性对供暖能耗的影响
Effect of building air tightness on energy consumption for heating
摘要：
以哈尔滨、北京、上海三个地区为例，分析了提高建筑气密性对供暖能耗的影响。研究发现，在严寒和寒冷地区，提高建筑气密性能有效减少渗风带来的供暖能耗，但当建筑气密性过高时，需要采用机械通风保证室内通风设计要求，风机能耗随着通风量增大而增大；在夏热冬冷地区，提高建筑气密性同时需要采用机械通风，增加了风机能耗，总能耗增加。采用机械通风的同时，对排风进行热回收可以减少供暖能耗，在严寒和寒冷地区节能效果明显。
Abstract：
Taking Harbin, Beijing and Shanghai as examples, analyses the effect of increasing building air tightness on energy consumption for heating. Finds that raising building air tightness will effectively reduce energy consumption for heating in the severely cold area and cold area, but when building air tightness is too high, mechanical ventilation has to be used to meet the ventilation design requirement, and fan energy consumption increases along with ventilation rate increasing. In the hot summer and cold winter area, mechanical ventilation is needed when raising building air tightness, fan energy consumption increases and total energy consumption also increases. Heat recovery from exhaust air can reduce energy consumption for heating when mechanical ventilation is used, and energy saving effect is obvious in severely cold area and cold area.
Keywords:building air tightness, energy consumption for heating, mechanical ventilation, heat recovery