我的订单 | 我的收藏 | 加入收藏 | 返回首页
暖通空调>期刊目次>2021年>第6期

夏热冬冷地区不同构造形式外墙动态传热特性分析

Analysis of dynamic heat transfer characteristics of external walls with different insulation forms in hot summer

续璐[1][2][3] 丁勇[1][2][3]
[1]重庆大学 [2] 国家级低碳绿色建筑国际联合研究中心 [3]绿色建筑与人居环境 营造教育部国际合作联合实验室

摘要:

研究夏热冬冷地区传热边界条件下外墙的传热过程,可为该地区满足不同动态热环境需求的墙体热工性能的设计提供参考。通过对该地区不同空调间歇运行模式下4种构造形式墙体的热过程、瞬时与累计传热量进行量化分析,得出4种构造形式墙体的内表面温度对室内空气温度变化的响应速率从快到慢依次为:内保温墙体、夹心保温墙体、自保温墙体、外保温墙体。经进一步分析得到:在空调间歇运行模式与连续运行模式下建筑热过程特性不同,导致间歇运行模式下室内热环境营造技术的节能路径与适用范围不同于连续运行模式;空调运行模式对空调运行时段通过外墙的瞬时传热量有显著影响,在进行墙体传热特性分析时应充分考虑供暖或空调设备的使用模式。

关键词:夏热冬冷地区,外墙构造形式,热过程特性,空调运行模式,瞬时传热量

Abstract:

 The study on heat transfer processes for external walls under boundary conditions in hot summer and cold winter zone can provide a reference for the thermal performance design of walls to meet the demands of different dynamic thermal environments in the region. Quantifies the thermal processes, instantaneous and cumulative heat transfer of four wall constructions under different air conditioning intermittent operation modes. The results show that the response rate of the internal wall surface temperature to the indoor air temperature for the internally insulated wall is the fastest, followed by the sandwich insulated wall, the self-insulated wall and the externally insulated wall. The characteristics of the building thermal process are different between the intermittent and continuous operation modes of the air conditioning, which leads to different energy saving paths and application scope of energy-efficient indoor thermal environment creating technologies in the intermittent operation mode from those in the continuous operation mode. The air conditioning operation mode has a significant effect on the instantaneous heat transfer through the external wall during the air conditioning operation period, so the operation mode of the heating or cooling equipment should be fully considered when analysing the heat transfer characteristics of the wall.

Keywords:hotsummerandcoldwinterzone,externalwallinsulationform,thermalprocesscharacteristic,airconditioningoperationmode,instantaneousheattransfer

    你还没注册?或者没有登录?这篇期刊要求至少是本站的注册会员才能阅读!

    如果你还没注册,请赶紧点此注册吧!

    如果你已经注册但还没登录,请赶紧点此登录吧!