答复

1. 专家成员
   马尔科姆·泰勒（Malcolm Taylor）|2022年4月14日上午11:57|＃1

   rkymtnoffgrd，

   If you use the GBA search function you will see this gets debated here at least twice a month, with lots of interesting arguments and no demonstrable advantage to one side or the other. You won't get appreciably warm to the touch floors, but some advocates say the gain of several degrees over an unheated slab is still a significant increase in comfort - but that increase in comfort comes at cost, in both complexity and money. There simply isn't some knock out punch one side of this debate can land over the other. I think it comes down individual preferences.

2. 
   Paul_wiedefeld|Apr 14, 2022 12:09pm|＃2

   用水供暖的缩放量很大：设备很昂贵，即使您的房屋为1000平方英尺且绝缘良好，劳动力也几乎没有变化。

   清楚地定义了温暖对您意味着什么，然后将其与您的热量损失进行比较。如果73度的楼层温暖，但没有70度，则可能有一个案例。

3. 
   Onslow|Apr 14, 2022 07:04pm|＃3

   rckymtgoffgrd，

   我在SW CO的8000英尺处，因此相似。有机会时，我将PEX放在地下室和车库板上。这些平板位于3英寸回收的XP上，本身位于带有嵌入式ra管的洗涤岩石上的6英寸上。我也没有激活，但是如果我想发现宽松的现金，我将有动力将一些热量放入我的商店板上。目前，它的稳定在60 f的漂移量为55F时，在周边稳定。请注意，这是低于等级的，我的粉底在外观上完全隔热了3英寸XPS。我不在商店里戴拖鞋，所以这不是一个大问题，但这是一个无尽的散热器，使保持商店温度为每年67F的加热条件。

   You will only have one shot at placing PEX, so if you are willing to do the work, have a few hundred extra dollars AND have agreement with the person doing the cement work, I would go for it. I stress having an agreement with your cement contractor as the placement depth for PEX and wire mesh need to be planned for. My cement contractor warned me that if the PEX gets too close to the surface of the slab your chances of cracking is greatly increased. He related a tale of someone that ended up with cracking that exactly echoed the pipe pattern. He also let me know that the mesh needed to be as near the middle of the slab as possible. A four inch slab pour means the PEX is going to be close and any bending will make it closer.

   My work around was to pin the PEX to the foam using lawn staples before his crew placed the mesh a few days in advance of the pour. (which I would not do this early at your altitude) Once the mesh was there I unpinned the PEX from the foam and zip tied it to the underside of the mesh. Hopefully your back is younger than mine. The zip tails were aimed down and trimmed. The mesh sat on cradles to maintain proper setting and all came out very nicely with no cracks.

   You will need to plan on how you run out the infeed outfeed sides of the PEX runs. Keep the run lengths similar and preferably a bit under the 300 ft. The radiant floor sites can advise better on why and such. You can buy special radius clips to hold the PEX in a 90 degree turn where they come up out of the slab or you can feed the PEX through PVC elbows. Just strap 1" PVC conduit elbows to a board which can be mounted on a stake or (if there) the wall at the slab edge. Leave a few feet sticking up so you can set any distribution pieces at a work friendly height.

   不要担心的PEX有点低slab. The foam under means the heat will still flow to the room side far faster than toward ground. As for hot water sources, some inventive types have rigged up reservoir tanks behind woodstoves that feed the loops with low head recirculator pumps. PEX isn't rated for very hot water, but at your elevation boiling is around 194F so plan accordingly.

   如果您想立即知道在倒入时是否会在您的油管上划分，您可以钻孔仪表和阀门以露出压力损失。由于在倒入过程中对此几乎没有什么关系，因此您可以像我一样选择在事实之后进行测试。您可以做的一件事是限制PEX的末端，以保持它们清洁。橡胶拐杖技巧很好。

   The mythical warm to your feet floor situation, as so frequently spoken of here on GBA, is quite a real problem. It does take about 82F to feel warm though some will say higher/lower. The floor materials conductivity will play into this more directly. If you are staining or stamping the concrete as a finished floor then 70F won't feel particularly warm. Still it will be above what my ceramic tile floors appear to be with my thermostat at 70F. I just measured three areas around the house and all are showing 65F which is closer to the shop temperature in the basement below.

   在冬季，您可能会发现，即使将地板保持在72+，也不会超越您的信封。我的阿尔卑斯山是R6.6，尽管很棒，但它们确实代表了我的R36墙壁。您可以在特定条件下运行丢失的BTU，并决定。肩部季节将是超越需求的能力最大的能力。

   如果您将木地板放在平板上，主要效果将是减少脚步的快速损失。软木甚至更好。Mies van der Rohe在我与软木板上住在一起的住宅塔楼里做了所有地板，这非常有效。最重要的是，Cork Tiles现在已经进行了预订，因此重新打蜡的需求要少得多。他的钢制窗框是另一回事。

   最后一件事，您是否已制定计划，将平板与外围墙壁隔离开来？即使是一英寸的泡沫也会有所帮助。