Staple-up氢化加热:空气腔或铝交器?
杰米B.|Posted inEnergy Efficiency and Durabilityon
我正准备在楼层中安装辐射管(从底部到托托托架之间的底部到底板上)。我计划获得铝制热交换器,因为我想象他们对传热更有效。但是,我不喜欢材料和劳动力的增加的成本。我和我当地的Upanor代表发表了讲话,他提到没有他们,我需要在地板托湾顶部做一个空气腔。
Then I found this article by Big JL stating that the air cavity method (without radiant) makes for warmer floors.https://buildingscience.com/documents/insights/bsi-064-bobby-darin-thermal-performance
不确定最好的选择是什么,显然没有添加铝更便宜,更快地安装,但在这里获得一些冲突的信息,这实际上更有效,而且我很好奇。
有没有人对此有任何评论或经验?
Jamie
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答复
杰米,
传热板依靠传导带warmth to the floor, while suspended tubes rely on convection and radiation through the air space. This is less efficient at transferring heat, and will require hotter supply water - in the neighborhood of 160 to 200 degrees F.
Both staple-up and suspended tubes traditionally use an air gap (with insulation and a radiant barrier installed below), so the discussion from the building science paper you mention applies to both.
You also need to support the tubing every 24 to 30 inches, which involves additional labor and material costs.
John Siegenthaler是“现代水性加热:为住宅和轻型商业建筑”的最佳信息之一。您可以选择使用不到20美元。
我不了解效率,但最后一个辐射的房子我确实是主地装上的管道,地下室是常规嵌入式戳。在HVAC伙计们之前推动了平板,使我使用的是。我对文件的持怀疑态度,似乎是穷人的辐射,但房主爱地板,说票据并没有出于普通,如果这些人爱他们,它一定是好的导致纹理鼻屎和这位女士会抱怨。它就像一把橡皮软管,他们用宽阔的皇冠钉枪钉起来。
挤出的铝传热板不需要,也不应该有空体。将管道发射的所有热量应集中在板上并通过传导进入地板。传导是国王。
Higher temp water will lower your boiler efficiencies also . The colder the return water , the higher your efficiencies go . Insulation below should be a minimum of R19 and should be installed tight to the bottom of the sub floor .
If cost is an issue and high temps and efficiencies lower than 90% do not bother you , you should probably consider economical radiant ceiling design which uses higher temp ( 169*) and a very small portion of the ceiling as the emitter , that portion is on the perimeter and is about 10 - 20 % of the available ceiling , also done with extruded aluminum plates fastened to the bottom of beams or rafters and 1" strapping or 3/4" running parallel with the plates and tubes , R 13 would be sufficient above . If you chose to go with 60 - 70% of the ceiling it would be less expense than floors , lower water temps that are reasonably conducive to very good boiler efficiency and floors , walls would stay within 1-2 * of room setpoint temp .
Ceilings are actually more comfortable than floors . Not new technology , on the contrary , just a lost art that served many well for decades . until the available labor pool no longer knew how it worked . Don't ask if heat rises , what do we think the odds are that the top of the sun is always facing Earth or maybe it turns over in the winter twice a day .
夹心也在欧博尔的CDAM和Siggy的MHH3中,如前所述。您还将在Robert Beans健康的加热网站上找到对它们的参考,我在房屋中完成了几十次成功的天花板工作,从1,500到10,000平方英尺。所有最终用户都爱上了他们。
BSC文章是关于未被用作散热器的未加热地板。辐射改变一切。
出于相同的热量速度,悬挂管需要最高的水温,然后是简单的叠钉(无散热器),然后悬挂管与翅片式热交换器,然后是钣金散热器,具有最低的挤压铝散热器。(一些更好的钣金类型比最窄的挤出式散热器更好。)只有悬浮管变体需要任何类型的气隙,允许对流环操作在腔内。