Electricity free cooling based on ancient, global principles.
These in-ground cooling tubes are also known as air tubes, earth air tubes, a ground-coupled heat exchanger, an earth-air heat exchanger, thermal labyrinth, heat recovery ventilation, geothermal energy tubes, sustainability tubes, or a number of other terms.
Cooling tubes are an efficient way to cool a building using natural convection and thermal mass principles. They require no pumps or fans, and are completely passive (no moving parts). This also means no electricity bill to “run” them, saving the building costs for the lifetime of the building, which keeps money in your pocket, and keeps your carbon footprint down. This is both natural cooling, and green cooling, simultaneously, and the principles take advantage of what nature already knows how to do.
Cooling tubes work by harnessing what nature provides us naturally, utilizing simple principles that allow the ambient air temperature to be cooled by at least 10 or up to 20 degrees Fahrenheit, depending on energy efficiency of the building itself. These earth-tubes work great in humid climates and they work in arid climates as well.
Since they last for the lifetime of the building (some have been going for 25+ years without any problems), and use no electricity, they can replace, or nearly replace any evaporative cooler (swamp cooler or Master-cool) or full size air conditioning unit (or several window air conditioners), depending on the building, its design and location.
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