Heat transfer systems use the exhaust or by-product of an internal system (furnace, machinery or heating system) to heat air, water or glycol and recirculate the heat back into a structure so little is wasted. This has been one of the key ideas of sustainable architecture that hadn’t been successful until recent years when technology switched from energy recovery to heat transfer principles. The energy recovery model was unable to remove humidity from the air returned to the environment but heat transfer and recovery can so mold issues are no longer a concern.
The New Urbanism
New Urbanism arose as a movement in architecture and design in the 80s and has steadily been influencing the building industry since. The emphasis is on green design, transit oriented development and smart growth. From the influence of New Urbanism, more and more interest was focused on perfecting heat transfer technology as part of the technology of sustainable architecture.
Installation – New and Retro
The current methods of heat transfer and recovery have evolved into systems that can be reasonably installed to new structures or retrofitted to older models. The only difficult process for retrofitting is using earth to air transfer systems because the tubing for the fluid contained in the unit must be injected into the ground and this is usually easier to do before the structure is built. Air to air, gas to air and other methods can be used for retrofit orders as well as placed in new structures where the plat may not suit drilling or digging.
The Selling Point
Heat transfer and recovery has numerous application but all of them have the combined selling points of providing green technology to projects that make them energy efficient, economical and carry high rates of positive social proof. This can be essential to promoting a project to a community for bond acceptance and permit approval. A detailed description of the benefits and workings of the system should be included with every proposal with the aim of educating people unfamiliar with this aspect of sustainable building.
The Forgotten Step
One factor that is overlooked when most heat transfer system are planned is how to stop the process. Depending on the geographical location of the site, during the winter season the outside air may be significantly colder than the earth temperature. Any liquid drawn through the earth and then passed through the system will lose, rather than gain heat. To stop this from happening, insulating plates are often used to cover the system and prevent the outside air from coming in contact with the tubing that is carrying the water, glycol or other fluid contained within the heat transfer system.
The Consideration
Allied Heat Transfer install these prevention heat transfer plate systems on industrial and commercial locations, it is another to do so on smaller units. The reason being that between uses they must be stored somewhere and most homes and smaller business do not have large storage facilities. There are options such as insulating blankets which can be rolled that may be a better choice than hard plating.
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September 19th, 2012
Tushar Mathur
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