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首页> 外文期刊>Journal of testing and evaluation >Improving the Condensation Resistance of Fenestration by Considering Total Building Enclosure and Mechanical System Interaction
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Improving the Condensation Resistance of Fenestration by Considering Total Building Enclosure and Mechanical System Interaction

机译：通过考虑整体建筑围护结构和机械系统的相互作用来提高窗孔的抗冷凝性

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摘要

Many condensation problems at fenestration are related to the adjacent building components the system interacts with. This in cludes adjacent cladding and wall systems, structural systems used for the connection of the fenestration, and interaction with the building's me chanical system. We will discuss how the condensation resistance of windows and curtain walls can be greatly improved by aligning the thermal elements in the wall with the thermal aspects of the windows (such as thermal breaks), how air leakage at window systems can increase the volume of condensation, and how thermal bridges adjacent to the fenestration can have a significant impact on the overall performance. We will discuss how Winter time cold air flow from adjacent wall cavities can cause elements at window or curtain wall surrounds (sill, jambs, and head) to condense when they would not otherwise. Thermal improvements through the application of carefully applied and designed insulation systems will also be discussed, as over insulating in some cases can exasperate the condensation problems by further isolating the systems from heat sources. We will discuss the relationship between the heating source position and distance from the window or curtain wall system. The discussion in this paper will be mostly related to Winter time condensation. We will use examples to show (1) how thermal breaks, like rubber and plastic shims below the windows, can disassociate the window from heat loss to colder large thermal wall masses and improve performance; (2) how elements like spandrel panels and shadow boxes can have condensation due to air leakage into the shadow box and proposed solutions for these elements to reduce their condensation risk; (3) how interior curtains, furniture, and interior furnishings can block heat flow and cause condensation; (4) how the two dimensional thermal analysis can be used to evaluate the condensation potential and evaluate possible solutions; (5) the results of infrared thermog raphy used to evaluate both condensation problems and evaluate the solutions; (6) the importance of long-term data logging and monitoring of the results; and (7) the review of options for reducing condensation occurrences through passive (heat fin and insulation) and active (heat trace) means.
机译：开窗时的许多冷凝问题与系统相互作用的相邻建筑物组件有关。这不包括相邻的覆层和墙壁系统，用于开窗连接的结构系统以及与建筑物的机械系统的相互作用。我们将讨论如何通过将墙壁中的热元件与窗户的热方面（例如热断裂）对齐来极大地改善窗户和幕墙的抗冷凝性，以及窗户系统中的空气泄漏如何增加冷凝量以及与开窗相邻的热桥如何对整体性能产生重大影响。我们将讨论冬季时来自相邻壁腔的冷空气如何导致窗或幕墙周围的要素（窗台，门框和头部）在其他情况下不会凝结。由于在某些情况下过度隔热会进一步使系统与热源隔离，因此过度隔热会加剧凝结问题，因此还将讨论通过应用精心设计和设计的隔热系统来提高散热效果。我们将讨论加热源位置与距窗户或幕墙系统的距离之间的关系。本文的讨论将主要与冬季凝结有关。我们将通过示例来说明（1）窗户下方的橡胶和塑料垫片之类的热破裂如何使窗户从热损失中分离出来，从而使较大的隔热墙体质量降低，并提高性能； （2）由于空气泄漏到影箱中，因此诸如跨度板和阴影盒之类的元件如何凝结，并针对这些元件提出了降低其凝结风险的解决方案； （3）室内窗帘，家具和室内陈设如何阻碍热量流动并引起冷凝； （4）如何使用二维热分析来评估冷凝势并评估可能的解决方案； （5）红外热成像的结果，用于评估冷凝问题和解决方案； （6）长期数据记录和结果监测的重要性； （7）审查通过被动（散热片和绝缘）和主动（热痕迹）方式减少凝结现象的方案。

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