煤气与热力2024，Vol.44Issue(10)：5-10,6.
严寒地区超低能耗建筑女儿墙优化设计
Optimization Design of Parapets for Ultra-low Energy Consumption Buildings in Severe Cold Regions
丁家城 1高立新 1刘忠强2
作者信息
- 1. 哈尔滨工业大学建筑学院,黑龙江哈尔滨 150006||寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨 150090
- 2. 哈尔滨工业大学建筑设计研究院有限公司,黑龙江哈尔滨 150090
- 折叠
摘要
Abstract
Taking the heat transfer coefficient of the thermal bridge line and the minimum temperature of the inner surface of the external wall(ensuring no condensation on the inner surface)as the evaluation indexes,the two-dimensional heat transfer model is used to calculate the change of the minimum tempera-ture of the inner surface of the external wall with the height of the inner insulation layer of the parapet,so as to determine the conditions for canceling the top insula-tion layer of the parapet.The three-dimensional heat transfer simulation method is used to determine the minimum thickness of the insulation layer of the exter-nal wall that meets the minimum temperature require-ments of the inner surface of the external wall under different outdoor temperature conditions.Under the same conditions,compared with the canceling of the top insulation layer of the parapet,retaining the top insula-tion layer of the parapet results in a lower heat transfer coefficient of the thermal bridge line,a higher minimum temperature on the inner surface of the external wall,and better insulation performance.When the height of the inner insulation layer of the parapet is 1 100 mm or more,the top insulation layer of the parapet can be canceled.When the height of the insulation layer on the inner side of the parapet wall is 1100 mm and there is no insulation layer on the top of the parapet:when the outdoor temperature is-26.9 ℃,the EPS board and PU board for external wall insulation can ensure that the minimum temperature of the inner surface of the ex-ternal wall is higher than the limit of 12 ℃ within their respective thickness ranges.When the outdoor temper-ature is-36.3 ℃,in order to ensure that the minimum temperature of the inner surface of the external wall is higher than 12℃,the minimum thickness of EPS board for external wall insulation is 340 mm,and the minimum thickness of PU board for external wall insu-lation is 260 mm.关键词
女儿墙/热桥/结露/严寒地区/超低能耗建筑Key words
parapet/thermal bridge/condensa-tion/severe cold region/ultra-low energy consumption building分类
建筑与水利引用本文复制引用
丁家城,高立新,刘忠强..严寒地区超低能耗建筑女儿墙优化设计[J].煤气与热力,2024,44(10):5-10,6.
