摘要
基于严寒地区建筑与气候特点,既有建筑改造项目受限于外立面条件难以实施外保温时,保温材料的选择尤为重要。真空绝热板具有较高的防火等级,不仅能够满足严寒地区的节能标准,还可以减少保温层的厚度并减轻墙体自重,从而确保外墙整体保温系统的安全性和稳定性。文中针对VIP板内保温系统,提出两种构造设计方案,筛选适配填缝材料。采用冷凝验算与二维稳态传热模拟软件PTemp,对VIP板及板缝区域的传湿特性与冷凝风险进行定量分析,聚焦严寒地区超低能耗建筑内保温系统的构造优化,重点解决VIP板接缝处热桥效应与湿气凝结问题。通过材料性能对比与热工模拟验证系统可靠性,为严寒地区既有建筑超低能耗改造提供了可靠的内保温技术方案,也为严寒地区超低能耗建筑改造项目提供参考依据。
Considering the climatic and architectural characteristics of severe cold regions,the choice of insulation materials is crucial in retrofit projects where external insulation is restricted by façade conditions.Vacuum insula⁃tion panels(VIPs),with their high fire resistance,not only meet the energy efficiency standards required in severe cold regions but also reduce insulation thickness and wall self-weight,thereby ensuring the safety and stability of the external wall insulation system.This study focuses on VIP-based internal insulation systems,proposing two structural design schemes and selecting suitable joint-filling materials.Condensation checks and two-dimensional steady-state hygrothermal simulations using PTemp were conducted to quantitatively analyze the moisture transfer characteristics and condensation risks of VIPs and their joints.Emphasis is placed on optimizing the internal insula⁃tion system of ultra-low energy buildings in severe cold regions,particularly addressing thermal bridge effects and moisture condensation at VIP joints.Through material performance comparison and hygrothermal simulations,the re⁃liability of the system is validated.The findings provide a reliable technical solution for ultra-low energy retrofits of existing buildings in severe cold regions and serve as a reference for related retrofit projects.
作者
田野
夏赟
张一恒
周洪淼
吴树行
樊春亭
TIAN Ye;XIA Yun;ZHANG Yiheng;Zhou Hongmiao;WU Shuxing;FAN Chunting(Heilongjiang Province Academy of Cold Area Building Research,Harbin 150080,China)
出处
《低温建筑技术》
2025年第10期11-15,共5页
Low Temperature Architecture Technology
基金
黑龙江省重点研发计划项目(2022ZX01A12)。
关键词
超低能耗建筑
真空绝热板(VIP板)
冷凝抑制
ultra-low energy buildings
vacuum insulation panels(VIPs)
condensation control
