Passive Solar Heat Storage in Water Tubes

These Greenway Passive Solar Heat Storage Tubes absorb and store excess heat from greenhouse air during the day and release the stored heat into the greenhouse at night.  Water is the best material for heat storage, storing the most heat for its volume.  Each tube, made from Teflon, is 100% transparent, letting sunlight pass on through to growing plants in the greenhouse.  Heat is absorbed automatically from warm air, and is released automatically back into colder air. Water tubes are most efficient if hung high in a greenhouse where the air is warmest and above the soil and crops. Water tubes are : -- automatic; the air and heat move naturally -- silent; no fans, no power, no fuel, no burners -- simple, no mechanical or digital controls -- you can see them working; water condenses on the outside when it is actively storing heat -- more attractive than ducts.

Watch "Follow the Water in the Greenway":
Follow the Water in the Greenway​ .

Watch "The Cape Cod Ark"
The Cape Cod Ark​

Watch our first topic-specific technical video "Water Tubes in the Greenway": Passive Solar Heat Storage in Water T...​

For more information on Green Center research and technologies, see: http://www.newalchemists.net​ (Green Center website)  
as well as
http://www.capecodecotoiletcenter.com​ (Eco-toilet Center website)

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