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能量书呆子的沉思

热气候中的窗户需要着色

如果房主整天都会让百叶窗保持下来,那就证明了窗户不应该在那里

When the sun hits these unshaded windows, residents pull the curtains shut.但居民并没有将窗帘拉上遮蔽的玻璃门。[照片信用:Martin Holladay]

热门气候住宅的设计师最常见的错误之一是包括太多的未遮挡窗户。这是德克萨斯州或佛罗里达州的居民有趣的游戏:在阳光灿烂的日子里驾驶住宅区,寻找暴露在阳光下的窗户。他们有很多,对吗?你注意到的是,几乎所有这些窗户都是由内部窗帘或百叶窗的不透明,所以居民无法看到它们。你会看到有六个或更多窗户暴露于太阳的家庭 - 每个人都被百叶窗或窗帘挡住了。

The sun is shining on all these windows. Indoors, a voice cries out, “Pull the curtains shut!”

所有这些百叶窗都有两种主要原因:眩光和过度的热量增益。

I live in Vermont, where window blinds are far less common than they are in Texas. Unless they have nearby neighbors who like to snoop, Vermonters don’t have much need for blinds. If the sun wants to shine through our windows, that’s fine with us. We almost always appreciate the heat.

Windows should be transparent

精心设计的窗户可欣赏到户外活动,并允许自然光线进入我们的家庭。但是如果一年大部分时间都被窗帘完全封闭窗户,那么它就没有做得很好。它也可以充满铆钉,绝缘和干墙。一个永久覆盖百叶窗的窗口代表了设计失败。

在这种高层住宅物业,照片左侧的阳台上的滑动玻璃门主要使窗帘打开。然而,右侧窗户上的百叶窗无处不下来。[照片信用:Martin Holladay]似乎......

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10条评论

  1. KurtGranroth||#1

    在Phoenix Az中悬垂不足的一个非常常见的解决方法是太阳能屏幕或太阳荫。窗户看起来像街上的黑色空隙。由于它们在第一次进入窗口之前,它们比百叶窗更有效地比百叶窗更有效。它们也堵塞了很多可见光,但不是所有的可见光,所以你可以从里面看看他们看上去(就像太阳镜一样)。

    我们在我们之前的“新”家中有它们,它具有最小的悬垂和耶啊,他们绝对工作,比几乎各方面的百叶窗更好。

    That said, when we moved, we specifically looked for homes with massive overhangs so we wouldn't have to apply a workaround like that in the first place!

  2. Expert Member
    马尔科姆泰勒||#2

    一个完全水平的繁体单位也非常有效。

  3. GBA Editor
    马丁·霍洛拉||#3

    Malcolm,
    谢谢。对于那些不熟悉的术语来说,一个繁重的SOLEIL(法国人为“太阳断路器”)是一个外部着色装置,通常是百叶窗,保护窗户免受阳光下的。下面的照片来自维基百科。

    我选择其中包含在本文中的照片(直接在句子上方的照片中,“最好的解决方案是遮阳篷或外部阴影特征等外部解决方案”)是一种繁体的SOLEIL(尽管显然不是水平的例子)。建筑师可以设计一个繁重的SOLEIL,可以是邻居,倾斜或可调。

  4. Robert Opaluch||#4

    “武器没有太多需要百叶窗。”同意在冬季期间的北部地区欢迎太阳能收益(佛蒙特州的90%)

    More seriously, in frigid December and January when the sun only shines for about one third of the day in northern climates...During the nighttime (two-thirds of the Day in December and January), cellular shades with side tracks, window quilts, and reasonably airtight insulated shutters can double the effective R-value (halve the U-factor) of windows, at a lower cost than upgrading the window, even in new construction. (Interior window coverings need to be fairly airtight to avoid convection currents, condensation and icing.). Clear plastic window insulation kits or interior glass window inserts can add a third "pane" to help too. As Martin points out, windows lose and gain A LOT of heat compared to walls, typically 5 to 10 times as much per area. Not to mention being more expensive during construction than wall space, in both materials and labor.

    Also agree with the window shading suggestions. One more: A deciduous shade tree strategically located a little bit north of west of windows is another way to provide summer shading without blocking the view very much. The summer sun sets in the west, but a little north of west. The winter sun is a bit south of west, and deciduous trees will have no leaves during winter, allowing more sun to shine on the west side of the house during afternoons. (Similar for morning sunlight on the east side of the house.)

    请注意,面向朝南的窗户通常在12月和1月中获得更多的太阳能,而不是他们失去的BTU,假设它们不是由另一个建筑,树或其他障碍的午间阴影。详情见表2:
    //www.gooddeals2u.com/article/a-quantitative-look-at-solar-heat-gain

    1. GBA Editor
      马丁·霍洛拉||#5

      Robert,
      Cellular shades and window quilts will, indeed, reduce nighttime heat loss through windows in cold climates. While these solutions may be less expensive than window replacement, they are so expensive that energy savings will never pay for the cost of installing them.

      虽然这些色调和绗缝不具有成本效益(在节能方面),但很多人都愿意使投资提高舒适度。有关更多信息,请参阅这两个文章:

      “我应该用旧窗户怎么办?”

      "Insulating Window Shades"

      1. Trevor Chadwick.||#6

        马丁,
        We have cellular shades on anderson casement windows, and though I can't be bothered to do the math on payback, they make a huge difference in comfort. Enough so it seems like they have to be saving a measurable amount of energy..
        I don't remember the brand, but they are 20ish years old, and other than having to replace the draw strings a time or two, still going strong.

      2. Robert Opaluch||#7

        如果成本合理是您的目标,那么自制的百叶窗可以是一个不错的选择。与大多数窗户覆盖物相比,EPS或Polyiso并不昂贵。一些1x2和矩形框架的螺钉,以及一些布料覆盖内侧,围绕框架钉立,一小时的劳动力,你已经得到了R-5到R-8与r-8 vs.任何替代窗户覆盖您的首选零售商。您甚至可以在最严重的冬季天气期间在窗口中使用内部安装阴影和窗户。百叶窗可以设计成通过弹出窗框操作,悬挂在窗框上,铰接到窗户修剪侧面或墙壁等,在不使用时存放它们可能是一个问题,如果他们没有铰接到侧面窗户。更改布料覆盖方面很容易,如果您想要一个风格的变化,或者如果要挂载照片或艺术品而不是布盖。访问我家的人认为“悬挂在窗帘上”大窗口快门是墙壁悬挂的艺术品,没有意识到它正在覆盖窗户。弹出式百叶窗隐藏在蜂窝阴影后面,在深窗口井中,因此它们在内部不可见。

        So Martin, what window coverings do you use in your home in northern Vermont?

        1. GBA Editor
          马丁·霍洛拉||#8

          Robert,
          我有一个被子(rela商业窗口tively airtight side tracks and a velcro seal at the window stool) in our cold downstairs bathroom. Every other window in the house stays transparent, night and day.

          Most homeowners get tired of the twice-a-day chore of installing and removing insulating shutters -- and they are, indeed, a pain to store or look at when not in use.

          1. Expert Member
            马尔科姆泰勒||#9

            刚刚帮助我的30个侄子用所有智能开关汇款,因为所有智能交换机都是太多努力漫步到墙上,我怀疑手动放置的日子覆盖物有限,通过迅速变化的人口统计。

  5. 布拉德马洛里||#10

    Eloquent

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