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This seems to me to be counter-intuitive. Would heat really radiate down into the room? Any architects out there have any knowledge of radiant heating systems and why a system in the ceiling would make a sense? Thanks in advance.
Ceiling radiant heating did have some amount of popularity in some regions and in some house types in the 1940'-1960's. In western PA, there were quite a few houses built with electric resistance heating coils mounted between two layers of 1/4", 3/8", or 1/2" gypsum board (or some combination of them). I never personally experienced a house heated this way, but I have been told by locals from my days in Pittsburgh while in college, that it worked well enough; as good or better than baseboard hydronic, though if mounted on a ceiling above a slab on grade, the floor could be chilly near the edges as one might expect. Installation of this system between a lower and upper floor worked well too, if properly sized and installed.
There are also ready-made mid-century to the present day factory made electric resistance infrared radiant panels (usually steel or aluminum) that are ceiling or upper wall mounted.
The 1949-1951 Lustron all-steel component houses featured hot air channeled above their sheet steel ceilings, providing a ceiling radiant system:
https://www.ohiohistory.org/visit/exhib ... ma-heating
I am not familiar with ceiling mounted hydronic systems other than current day pex tubing mounted between joists with metallic reflector strips to heat the floor above.
Since radiant heat travels in all directions it was important to install sufficient insulation above these panels in a one-story building. In a two-story building without the insulation the panels would also heat the floor above.
Some of the advantages were a 1) consistent even heat that was 2) quiet and 3) dustless. You were also able to easily 4) zone each room separately, especially nice when you want a bedroom to be cooler than the living room.
Disadvantages included not being able to screw a plant hanger (or anything else) just anywhere in the ceiling, and the local price of electricity. Illinois had a lot of nuclear plants that kept the cost fairly reasonable. Other areas of the country that have hydro-electric power would also be reasonable. Electric cost by state: https://www.chooseenergy.com/electricit ... -by-state/
Currently, this technology is produced in radiant panel sized to fit in a suspended ceiling grid. This is especially useful along the perimeter of a room that has large expanses of glass. It prevents condensation and water damage to wood trim around windows. Here is one manufacturer: https://indeeco.com/products/wall-ceili ... gL5_PD_BwE
Here is a company that produces hydronic heating & cooling drywall panels: https://radiantcooling.com/messana-radi ... -products/
You also can consult these manufacturers for information about specific products: Enerjoy, Thermaray, Calorique
Yes, this is because the heat is more evenly distributed than a forced-air furnace.SDR wrote:In the first article I read about radiant heating, many years ago, one fact that stood out was that occupants were found to be comfortable with indoor air temperatures notably lower than in conventionally-heated spaces . . .SDR
etc -- rather than blanketing the space. This would presumably lead to lower heating costs, compared to maintaining a given air temperature in that space.
would have a mandated geothermal system for heating and/or cooling assist, wherever practical -- which I would assume would be almost everywhere ?
From their website:
Minimally Invasive Installation Options
EarthLinked Geothermal Renewable Energy Systems are compact and require a smaller amount of yard space to install than any other system. They can be installed in any home, regardless of property size. We offer nine different earth loop system configurations, which allow us the flexibility to install geothermal solutions in both larger and smaller properties. Diagonal earth loop configurations can be installed in areas as small as three feet in diameter. Plus, because the technology is placed underground, you will have less equipment inside your home or visible on your property.
also: http://earthlinked.com/how-it-works-the ... n-process/
Where did Wright pick up on this idea? His systems were steel imbedded in the concrete....do I have that right?