These traditional materials can also be difficult to cut and/or require specialized equipment, and may take a significant amount of time and expertise to assemble compared to PEX piping systems, which can be assembled in do-it-yourself homeowner kits.įigure 2 Closed and open loop heating system They often require open flames for effecting the joining systems for radiant heating applications. Traditional piping systems were rigid and difficult to work with because of their weight and the need for fittings at every turn.
The heating profile is much more uniform, meaning fewer cold/hot spots (Figure 1, next page). This type of heating can provide superior comfort and efficiency compared to traditional forced-air convection heating. The heated surface then functions as a radiator, warming a room and all objects and people in it. Hydronic radiant floor heating employs heated water flowing through tubes or pipes under the floor. This temperature difference is the driving force behind radiant heat transfer. These other objects, in turn, radiate energy to other, cooler objects. Heated surfaces radiate energy, which is absorbed by other objects in a room. In North America, the pipe is rapidly gaining popularity for a variety of plumbing applications, including radiant heat. PEX pipe is already used extensively in Europe for underfloor heating. With the development of advanced materials in the 1960s-specifically PEX, or cross-linked polyethylene-this comfortable, efficient, and effective source of heat can be extremely reliable, durable, safe, and readily available. One of the more recent modern examples involves Frank Lloyd Wright, who incorporated hydronic radiant heat into his designs in the 1930s. Since the time of the Roman Empire, radiant systems have been used to deliver heat to buildings.
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