لوحة نقل الحرارة PEX – مقذوف أو صفائح الألمنيوم?

We are retrofitting an existing house with radiant heat under the floor. From my research, it seems clear that we should install aluminum heat transfer plates, but I haven’t been able to determine if it’s worth investing in an extruded aluminum C-shaped heat transfer plate (omega o or U-shaped) on top of a metal plate. Even if bought in bulk, extruded sheet is about 3 times more expensive than sheet metal.

A useful study was carried out in 2013 مقارنة توزيع درجة حرارة الألواح المبثوقة والألواح على شكل حرف U.. أكبر نتيجة استخلصتها من هذه المقالة هي أن اللوح المبثوق به توزيع غير متساوٍ للحرارة ولكن درجة حرارة ماء عائد أقل (جيد للكفاءة). أعتقد أن السؤال الرئيسي هو ما إذا كانت الزيادة في الكفاءة كافية لتعويض التكلفة الإضافية مقدمًا.
لوحة نقل الحرارة PEX

أدرك أن هناك العديد من العوامل التي يمكن أن تؤثر على أداء الطاقة لمنزل معين, and we will work with the local heating company to determine the setup of the system. I’m hoping someone with experience with both boards can give us a feel for how much different extruded boards are compared to aluminum boards.

If we were using sheet metal, my hunch would be to use the omega shape, considering there is more contact between the metal and the pipe. However, I’ve also heard that the sheet metal makes noise when the pipe expands as it heats up, and I’m wondering if there is more room in the U-shaped channel for the pipe to expand without affecting the surrounding metal. Any thoughts on this?

For extra background, we plan on 1/2PEX, two lines between the joists (16C), insulated from below. Hardwood (oak) floors above, small rugs. We haven’t decided on the water heater.

PEX heat transfer plate installation video