Mechanical Drying of Wall Assemblies
这在GBA文章中提出了有关管理水和绝缘墙壁而不开放的文章。我的FHB All Access并没有赋予我对GBA Prime文章发表评论的权利，所以我在这里。
根据我们隔离房屋的技能水平，或愿意管理细节的意愿，除了一种值得娱乐的被动干燥方法之外，不是其他东西吗？
我喜欢对墙壁腔的浮潜的想法（或任何人）。只要事情开放，我们就不会做得更好，并提出一种机械增强干燥的方法。
Seems as we travel further down this path that this is something that should be taken more seriously. Combining lots of thermal resistance with the requisite reductions in energy seems to be a recipe for some big disasters.
I am not talking about 400 lb radiators, but just blowing enough air to accelerate things a bit. Maybe its triggered by observed moisture levels surpassing some level.
An energy rater friend of mine talks about newer homes smelling like old shoes after only a few years. while the problems might be deeper, close monitoring along with some mechanical assistance might take us a long way to preventing some of the disasters we have seen in high performance homes. I am told this is sometimes done in the commercial world, why not in residential?
修理甚至更换具有模具或腐烂的房屋不是能源赢家。
GBA细节库
A collection of one thousand construction details organized by climate and house part
Replies
约翰，
Risinger试图在没有护套或WRB的极少数情况下提出一个工作来通风墙（如果他真的很担心它们，他可能会绑住墙壁并重新侧面）。我认为没有任何理由将正确详细的新房子在建筑物组件或内部中应有水分问题。这确实意味着要依靠内部空气质量的机械通风，但是我看不到是什么驱使我们将其纳入建筑物组件。
目前，高性能房屋的主要问题之一是建筑物组件的种类繁多和扩散，其中许多都是冒险的。您一直在GBA上看到它。非常复杂且昂贵的墙壁或屋顶不需要太多才能将它们推向水分问题。在我看来，需要在每个气候区域找到两个或三个工作并坚持下去，而不是添加另一层复杂性供他们依靠，如果失败，这会使房屋成为损坏的风险。
我认为这是一个好主意，尽管仅这个国家就有超过1亿个建筑物。我同意，如果一切都正确地完成，都应该很好地工作。正确闪烁的窗口的百分比是多少？
Mind you I am not talking about massive amounts of air, just enough to encourage drying. Martin H mad a great comment some place about turning on a ceiling fan to prevent interior frost on windows.
This mechanical ventilation would only be on when moisture is prevalent. That is the point of the monitoring.
WE never get to zero, net zero perhaps, but when you have reached a point where you are already mechanically aspirating the house why not a focused approach on the wall assemblies.
同样，这是交易实际上将建造这些墙的交易。GBA提供了一个偏见的样本，或者花时间理解，了解和执行这些细节的人。毫无疑问，许多执行较差的集会将建立在较新的代码上。没有大规模的文化改变，我认为它在该领域的情况并没有好转。
Malcolm, it seems to me that a rain screen solves many of these problems, and is a nice passive way to "actively" ventilate a space with simple convection currents. I don't see any need for truely active things like fans or blowers here.
Overly fancy assemblies have too many things that can go wrong. Keeping things simple does have it's advantages. In the telecom world, power devices (although not as much as they used to be) tend to be convection cooled with big heatsinks with the fins veritcal. The reason for this is that fans can fail, convection always works. Things that can cool themselves without need of fans are thus much more reliable over the long term.
账单
我认为这没有正确的答案。很大程度上取决于您认为构建应采取的方向，更普遍地说，主动技术在其功能中的作用。我对约翰对建筑商的悲观主义没有同样的悲观。在一个相当周到的建筑法规的鼓励下，我周围的房屋被建造为一个标准，因为信封问题不再是常见问题。一个例外可能是内部水分水平 - 这是乘员关闭机械通气的直接结果。这让我想知道在使用或维护方面，显然有利于有益的系统的进一步降低。
Maybe it's the climate I live in here in the PNW, but I can't think of a part of the building envelope that would benefit from having mechanically assisted drying. Perhaps elsewhere it's something to consider.
似乎普遍认为，尽管通常有其他通风，但墙/地板/天花板/屋顶通风必须是被动的。但是被动通常是不可靠的，有时是很昂贵的 - 因此应考虑动力。
一个罕见的例子（请参阅动态缓冲区区域）。
积极的腹置伴随着持续的能源消耗的缺点以及可能失败的活动部件。我的经验是，小型松饼球迷通常会在1 - 3年内失败，优质的风扇和鼓风机可能会达到10年或有点结束。有些鼓风机可以使它过去10年，但它们非常昂贵。
If someone were to contemplate an active ventilation system for a wall, I would do a sort of ducted/plumbed system to allow the use of a single, central blower instead of a bunch of small fans. This will keep maintenance issues down, and result in a lower cost over time.
账单
谢谢你。这正是我所期望的。只有在需要增强干燥时，我不会跑步或建议连续运行此风扇。
Looking forward FHB recently rand a feature on active moisture monitoring. If even a small percentage of production homes had this the data would be very useful.
Maybe a right sized approach would be to employ this on north facing assemblies underneath window openings or likely failure points, like roof connections etc.
Running a small fan (intermittently, seasonally,, and only when needed) seems a small price to pay in energy to preserve the assembly.
我感谢每个人的评论，并希望在这里或其他地方看到更多。
Interesting. I am from Illinois so lets just say for many reasons we don't do as good a job as in say Wash or Ore. I just saw a project with a very good architect who has done many PH project in the area (truly outstanding world class projects) and the stucco wrap on the addition looks like it was put on with remnants. The part under the porch looked very neat and tidy.
我真的在想到我们超越R-13-19墙并达到30或40的那一天。错误将要昂贵得多。
谢谢绅士，我非常感谢这里的讨论。
Interesting comment on turning off the mech vent. Same issue in my house. Its filtered its dryer etc etc. No I want "fresh air". There is no planning or design for that I guess.