严寒、寒冷地区被动式建筑保温层较厚,内置真空绝热板复合保温板能够大幅降低保温层设计厚度,提高得房率、减小公摊面积.采用CFD软件对复合保温板传热及热工性能进行仿真,分析真空绝热板失效后对复合保温板热工性能的影响,并计算内置保温系统结构性热桥产生的附加传热系数;同时采用DEST软件对河北省三大气候区采用复合保温板的被动式建筑进行能耗计算,分析真空绝热板失效前后对建筑能耗的影响及后期建筑运行保障方法,为后续采用复合保温板的内置保温系统工程设计提供参考.
In the frigid region and cold regions,the thermal insulation layer of passive buildings is thick.The composite insu-lation system with built-in vacuum insulation board can greatly reduce the design thickness of the thermal insulation layer,improve the room rate and reduce the public share.In this paper,CFD software was used to simulate the heat transfer and thermal perfor-mance of the composite plate,analyzed the influence of the vacuum insulation board on the composite plate after failure,and calcu-lated the additional heat transfer coefficient generated by the structural thermal bridge of the built-in insulation system.At the same time,DEST software was used to calculate the energy consumption of passive buildings with composite boards in the three climate zones of Hebei Province.The influence of vacuum insulation boards failure on building energy consumption and the guar-antee method of building operation in the later period were analyzed,which provided reference for the design of built-in thermal insulation system for composite panels in the future.