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ERV管道

kay_esper|Posted in一般的问题on

再会,
I just finished installing my ERV ductwork it’s for a Daikin VAM 250 FC 90 CFM at low speed and 150 CFM at high speed, my house is a 1500 sqf with 9f ceiling system is 6inch × 9 inches rectangular rigid trunks for supply and exhaust and 5 inches branches out of them to 6 supply points and 6 exhaust points with dampers on each point close to main trunk now my question is I have an issue with the ducts going out of the house can I use flex insulated round ducts stretched to the max for 20 feet of exhaust and 18 feet for supply? And second is my duct sizing Okay?

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Replies

  1. 专家成员
    Akos||#1

    如果您不对其进行任何尖锐的弯曲,则室外供应和返回的Flex管道没有错。

    对于更复杂的运行,我喜欢使用半刚性铝管(认为干衣机的长度但长度更长),将隔热袜拉过。半刚性比金属管道高约15%,但与Flex不同,您可以进行紧身的弯曲。

    Make sure you seal the stale air out well, leaks there could add a lot of cold air to the house in the winter.

    在您的房子里,管道(树干和树枝)超大,这绝不是一件坏事。要注意的一件事是在卧室流量的5英寸分支上,阻尼器将对调整非常敏感。

    1. kay_esper||#2

      非常感谢您提供的确切信息,您能否详细说明超大的后备箱和树枝的缺点,而卧室减震器的敏感方式是什么?抱歉,基本问题,但我基本上是我自己做作业

      1. 专家成员
        Akos||#3

        较大的树干只是占用了更多的空间,没有错。

        较大的分支 /低流量的问题是,阻尼器只会在关闭流程之前就开始对流程进行影响。这使调整很难调整,因为阻尼器的角度的小变化会在流动方面产生很大的影响。某些标准圆形阻尼器的泄漏区也很高。有5英寸和10CFM的阻尼器,甚至完全关闭的阻尼器可能无能为力。

        如果您的分支机构非常平衡,那么这可能不是一个大问题。如果您确实需要节省一个分支机构,那么缩小起飞的规模将有所帮助。通常,卧室只需要3英寸的分支(如果复杂的管道)。3英寸的好处是很容易适合2x4墙。

        1. kay_esper||#4

          非常感谢非常有用的最后1 thing does connecting 2 solid ducts 6x9 via 2 feet of 6 inch flex duct at the far end with only 2 supply outlets going out of the last piece affect the system? And I'm trying to space at least 6 feet between outside supply and exhaust ports

          1. 专家成员
            Akos||#6

            不确定我正确理解这个问题。

            如果您希望将两个供应箱的两个部分与6英寸的挠性连接起来,那么无论上面有多少个供水源,都应该很好。6英寸flex伸直可以流动很多空气。

        2. kay_esper||#5

          我设法用3英寸的树枝替换了5个阻尼器

          1. kay_esper||#7

            是的,您非常有帮助,谢谢您的时间和知识。如果我需要其他任何东西,我会回到你身边

  2. kay_esper||#8

    Getting back to this question, update on some required info, so 5 inch fully closed damper can still leak enough air to mess with my balancing? And if one damper is open slightly more than the others closer to the main branch can it leak all the 150 cfm?

    1. 专家成员
      Akos||#9

      略微关闭的阻尼器将永远不会泄漏整个150cfm,但是我不会惊讶的是,盒装商店阻尼器泄漏10cfm完全关闭。问题是,如果您试图在ERV附近的树干上设置为10cfm的卧室的流量,那么更大的阻尼器即使最小的调整也可以将流量更改为2。这更多是一个问题如果您的分支是不平衡的(设计流处的压降不相同)。如果您很难平衡流量,请加入较小的阻尼器。

      1. kay_esper||#11

        Thanks Again Akos, I don't have a problem with the pressure drop since my main trunk for fresh air is well balanced it contains only 1 90degrees turn while for the exhaust has 1 90 degree into straight then split left and right then another 90 degree but that's for the exhaust ports only. I guess I won't find out until I install the ERV next week

  3. C L||#10

    Don't most ERV's have internal dampers?

    从描述凯有管道分布式ERV的描述。每个供应和排气点是否需要其他阻尼器?

    What about a spot ERV like the Panasonic Whisper Comfort? Those just duct to the exterior for both supply and return. Do the ends of those ducts need dampers?

    1. kay_esper||#12

      我已经为ERV单元建立了完全专用的管道系统

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