Radiant heat transfer is a method of transferring heat without direct contact and is used in home heating applications. It requires an understanding of the heat transfer equation and uses pipes that circulate hot water to heat a home. Aluminum plates hold the tubes in place and make the heat uniform and efficient. Radiant energy is clean, silent, and energy-efficient, and does not blow dust or allergens like forced-air systems.
Heat can be transferred between two objects by conduction, convection or radiation. Of these three, only radiant heat transfer does not require a medium to transfer heat. All objects with temperatures above absolute zero emit radiant energy. Radiant heat transfer flows from the hotter object to the cooler object. The heat of a campfire is felt without touching the flames. The sun shines and the heat travels through the void, arriving with the force of burning. The principle of radiant heat transfer, meaning that heat can be transferred without direct contact, is being used successfully in home heating applications.
Using radiant heat transfer in homes requires an understanding of the heat transfer equation. This equation takes into account the heat transfer coefficient, the surface area of the heat source, and the temperature difference between the heat source and the colder object. The heat transfer coefficient represents how easily heat can move. If a medium is involved, this is referred to as the thermal conductivity of the material. The surface area of the heat source is important because it determines how much heat can be released at one time. The total heat transferred is equal to the product of the heat transfer coefficient, the surface area and the temperature difference between the objects.
Finding an adequate radiant heat source for home heating is a challenge. Neither a campfire nor the sun can be used directly to create the radiant heating system. Instead, a series of pipes that circulate hot water, using radiant heat transfer, can effectively heat a home. The pipes work on the same principle as a hot water bottle that warms your sheets. The pipes are fixed under the sub-floor or in the ceiling. Hot water is circulated through the system. Raising the temperature of the water coming from the boiler increases the room temperature.
Aluminum radiant heat transfer plates are used to hold the tubes in place. As the pipes heat up, the aluminum plates heat up as well. When aluminum heats up, it rapidly releases, or radiates, heat. The temperature of the house increases thanks to the radiant energy released. The addition of aluminum transfer plates makes the heat uniform and efficient.
Radiant energy is extremely clean for a home. Doesn’t blow dust, pollen, and other airborne allergens like forced-air systems do. Since there is no fan, the system is silent. The heat is simply felt, not felt. There are no furniture placement issues as there are no vents or radiators to get around. The heat supplied is extremely uniform and energy efficient.
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