海拔高度与门窗气密性对建筑供暖设计热负荷影响及机理研究  

Effects of Altitude and Air Tightness of Doors and Windows on Heating Load and its Mechanism

作　　者：高飞 龙恩深 肖栋天[2] 李皓月 Gao Fei;Long Enshen;Xiao Dongtian;Li Haoyue(Institute of Disaster Management and Reconstruction,Sichuan University,Chengdu,610065;College of Architecture and Environment,Sichuan University,Chengdu,610065)

机构地区：[1]四川大学灾后重建与管理学院,成都610065 [2]四川大学建筑与环境学院,成都610065

出　　处：《制冷与空调（四川）》2020年第1期1-5,共5页Refrigeration and Air Conditioning

基　　金：国家重点研发计划(2016YFC0700400);国家自然科学基金(51778382)。

摘　　要：建筑供暖负荷主要包括围护结构传热及冷风渗透两部分,海拔高度的变化,影响建筑围护结构表面对流换热系数及空气密度,因此海拔高度对建筑供暖设计热负荷的影响不可忽视。主要考虑当海拔高度增加时,在相同门窗气密性等级条件下分析建筑冷风渗透部分负荷的变化。通过进一步研究来揭示海拔高度与门窗气密性对建筑供暖设计热负荷的影响及其机理。研究表明:(1)建筑的采暖设计热负荷会随海拔高度的增加而降低;(2)门窗气密性在高海拔地区对建筑设计热负荷的影响不如低海拔时明显;(3)对于高海拔地区若经济不允许,则可适当放宽对门窗气密性的规定,采暖设计热负荷计算中需考虑海拔高度的影响。研究成果为在高海拔地区的建筑供暖设计热负荷的确定及节能相关整改措施提供理论参考。Building heating load mainly includes two parts:envelope heat transfer and air infiltration.The change of altitude affects the convection heat transfer coefficient and air density on the surface of building envelope,so the influence of altitude on the heat load of building heating design can't be ignored.In this paper,it is mainly considered that when the altitude increases,the thermal load change of the air infiltration part is analyzed under the same air tightness level of doors and windows.The influence of altitude and air tightness of doors and windows on the heat load of building heating design and its mechanism are revealed through the research on the influence.This study shows that:(1)The heating design heat load of the building will decrease with the increase of altitude;(2)The influence of air tightness of doors and windows on the heat load of building design in high altitude area is not as obvious as that in low altitude area;(3)For high-altitude areas if the economy is not allowed,it can be appropriate to relax the air tightness of windows and doors,and heating design heat load calculation need to consider the impact of altitude.The research results provide a theoretical reference for the determination of the heat load in the heating design of buildings in high altitude areas and the rectification measures related to energy conservation.

关 键 词：海拔高度 空气密度 冷风渗透 设计热负荷 

分 类 号：TU241.4[建筑科学—建筑设计及理论] TU831.6