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在我无条件的阁楼中节省能量的最佳策略是什么?

I’m in zone 5A and have 6″ of insulation between the floor joists and no insulation between the roof rafters. The HVAC system and all its flex duct work are in the unconditioned attic. The building is a town house with 40″ common walls running east west and the 18″ roof ridge running north to south. There is eaves and ridge venting. The roof rafters are irregularly shaped: some are standard widths, others are not.

HVAC单元和Flex管道工作在阁楼中,在剧烈的寒冷时寒冷的无条件空间,即使在春末至秋季初温暖的阳光明媚的日子中,也会烤热。

将重点放在屋顶上的反射材料或隔热材料上,或者在地板上进行更多的隔热材料,以减少下面两个楼层条件的HVAC运行时间?

我在房子下面有一个通风的爬行空间。托梁用原始的(30年的材料。裸露的音乐会墙壁都具有刚性的绝缘材料。

谢谢你。

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回复

  1. Aj Builder, Upstate NY Zone 6a||#1

    雇用一个也可以进行空气密封的鼓风机门。如果您的气热,那就太好了。如果没有时间添加迷你拆分。另外,如果您收紧房屋,则需要朝着密封的燃烧热水和加热系统迈进。用旧样式的单元拧紧房屋太紧是不安全的。

    我将通过实用程序或国家能源计划找到Blower Door Gent。

  2. Joseph Malovich||#2

    您有2.5个选项:

    1-将HVAC带入条件空间。隔离和空气密封您现有的after子。我不确定现有的实践是关于控制蒸气渗透性的具有成本效益的高R组件。

    2 - Insulate the ductwork and blow in to R60+ above your existing insulation. Make sure you airseal your attic floor so no hot air escapes into the attic space.

    2.5- 2组合与杂物间的杂物间,其余的阁楼地板为您的R60+

  3. 专家成员
    达娜·多塞特(Dana Dorsett)||#3

    Reflective insulation at the rafters is pretty useless during the much more important heating season, and less cost effective than adding more insulation at the attic floor to bring it up to current code min.

    空气密封房屋(尤其是阁楼地板),管道和空气处理器都是重要的第一步。

    如果阁楼通风孔是拱形到距离的,那么使用高度蒸气 - 可渗透的房屋包(〜30 pers tyvek比〜10 pers typar typar)可以更容易地将其固定在the the the the the the the the the the the the the the afters上,然后填充到框架上。任何连接屋顶纸的接缝都必须在框架上发生,并且必须在床单之间填充,并且边缘需要填补到坚固的东西,而不仅仅是钉东西。这至少会将HVAC带到房屋的压力边界内,从而限制了管道泄漏的浸润驱动效应,而不会阻止水分在冬季脱离冷阁楼。

    In the crawlspace, istalling a ground vapor retarder mastic-sealed to the rigid insulation, and held in place with 1-furring throuh-screwed to the foundation with TapCons would allow you to seal the venting without creating problems. Air-sealing the foundation sill & band joist is also important too. If the wall foam is only an inch thick, it's worth considering bring it up to code-min with another layer of foam, or a non-structural studwall with R11-15 rock wool/fiberglass insulation. Code-min for crawlspace walls for zone 5 is R10 continuous insulation, R13 if between studs:

    http://publicecodes.cyberregs.com/icod/irc/2012/icod_irc_2012_11_sec002.htm

    随着阁楼和爬网空气的密封,您已将大部分“堆栈效应”空气浸润驱动器的驱动器取走,这是最重要的空气泄漏。借助隔热和密封的粉底墙壁带有地面蒸气延迟器,您还可以在夏季降低爬行空间中的水分水平,在这里,托梁的边缘很容易在空调的房屋中足够冷却,以使水分保持水分,从而导致慢性霉菌问题。

    如果本地代码需要排气的爬行空间出于排水目的,则可以用可撞击的门或可移动的壁式舱口盖密封通风孔,并用R10刚性绝缘隔热。

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