在条件空间内的管道上的绝缘,凝结?
嗨,我在旧金山湾区,3C区旧金山湾区的一个2楼房子的规划阶段。管道的多分裂系统的管道工作将位于条件空间内,并且我在紧密安装的情况下,除了最终的柔性管道外,通常具有刚性管道。这个问题是在第一楼里,我试图在天花板托托托湾(2 x 8“托架中的大部分管道,所以7-1 / 4”实际)所以我不会失去头部。托梁也坐在几个必须交叉的光束上,所以我们也受到相同的2×8“托托湾高度。
The HVAC designer who lives in another climate zone has made a recommendation to insulate these ducts due to concerns of condensation even though they are within conditioned space. The thinnest duct sleeve insulation I can find is R-4.2 at 1-1/4″ per side for a total of 2-1/2″. This limits ducts to 4-3/4″ in height which won’t get the job done.
如果我们确保管道运行的托梁湾空气密封,特别是在轮辋托梁上,凝聚将是一个真正的问题?又问道,我可以在没有管道绝缘的情况下离开吗?如果绝缘是重要的,那里还有其他解决方案吗?
谢谢你一个梦幻般的网站。
Wilson
GBA详细资料库
由气候和房屋部件组织的一千个建筑细节的集合
答复
威尔逊,
我的判断是,在旧金山湾区,家庭条件空间内的无色管道不会引起冷凝问题。
我对此问题的GBA读者的意见很感兴趣。
即使是湾区的平均户外露点也很低,甚至在夏季中期甚至超过大约一半的时间:
https://weatherspark.com/m/541/8/average-weather-in-august-in-oakland-california-united-states#sections-humity.
https://weatherspark.com/m/1098/8/average-weather-in-august-in-san-jose-california-united-states#sections-humity.
https://weatherspark.com/m/560/8/Average-Weather-in-August-in-San-Mateo-California-United-States#Sections-Humidity
https://weatherspark.com/m/566/8/average-weather-in-august-in-sausalito-california-united-states#sections-humity.
具有足够的空气流量,管道温度永远不会冷却,而不是55°F,除非超过室内空气的露点,否则不会发生大量冷凝。随着空调的运行,室内空气的露点将下降到室外空气的露点以下。
底线 - 您必须竭尽全力设计系统,以便在这种气候中的条件空间内的管道上获得冷凝。只有在明智的载荷和通风率超低的情况下,室内露点就足够高,以产生问题。或者如果你每天服用12个阵雨而不跑浴缸,并且始终保持一个未被覆盖的面食在没有厨房的炉子上,你可能会发生这种情况。
我看到了冷凝管工作,但是你娘家姓的d just the right conditions and then it was limited to small section of the ductwork where the cold air enters the ductwork and the duct changes direction and the ductwork is located in a room with higher than normal humidity. All ductwork lives on the very edge of condensation because the supply air is always delivered at or slightly below the dew point of the rooms return.
我不认为有必要在条件空间内隔离导管。
Thank you everyone for your help. Your expert input is greatly appreciated.
如果您的室内温度为76F,内部源将%RH推至60%,那么露点将为61F(足以引起冷凝)。但是,您可以防止这种情况下达到约50%。