FREE Shipping & 11 Year Battery Warranty
Boil water using only sunlight! 1 tube can raise 1 liter of water from 60’F(15’C) to 212’F(100’C) in one hour of direct sunlight. Use this box of 10 tubes for your own science or hobby projects, or for building your own powerful solar-powered home heating systems.
Available on backorder
On Solar Tube Performance
Heats 5 gallons of water from 68°F (room temp) to 122°F (above hot tub temp) in four hours if recirculated by a pump.
Jumps temp of any input water circulating through by 37°F at flow rate of 5 gallons per hour (pump required).
Heats water at a rate of 165 watts. Twice the energy collection rate of solar panels!
20 1/2" long (500mm) X 2 1/4" outside diameter (58mm) X 1 3/4" inside diameter (43mm)
Box of Ten (10) Solar Vacuum (evacuated) tubes only.
Do not exceed 100 psi (Ok for most city supply pressure). Closed systems must have relief valve.
HIGHLY EFFICIENT SOLAR THERMAL COLLECTOR. Sunlight is extremely powerful. Steam & burn danger without proper handling. Remember to never connect to a closed system without pressure relief. Do not touch internal components while heated.
-Includes: Box of Ten (10) Solar Vacuum (evacuated) tubes.
No other parts are included.
-20 1/2″ long (about 500mm)
-2 1/4″ outside diameter (about 58mm)
-1 3/4″ inside diameter (about 43mm)
-Double wall structure with vacuum between walls
-Super-absorbent inner tube coating quickly soaks up solar energy
-Steel, aluminum, and copper coatings for infrared reflective insulation
-Incredible thermos-like properties can keep water hot even over night
Finally you have a reliable U.S. source for high-grade solar vacuum tubes, also known as solar evacuated tubes. Unlike many solar vacuum tube suppliers we offer a standard 100% shipping protection guarantee. Make sure other vacuum tube suppliers you are considering offer this type of no-questions guarantee for these fragile evacuated tubes. We offer excellent customer service for any assistance you many need for your solar hot water system needs, and stand firmly behind the quality of all our products.
Each solar evacuated tube soaks up the energy in sunlight, absorbing it into the super-insulated inner tube of their incredible double-wall heating system. Once inside, the heat of the sunlight is trapped inside the inner wall of the inner glass tube, creating a powerful solar thermal collector. Highly-reflective layers of steel, aluminum, and copper trap the infra-red energy of the sunlight, and the nearly perfect vacuum between the inner wall and the outer transparent wall protect the inner tube from heat loss due to convection, just like a high-grade drink thermos. This thermos effect can quickly heat water to boiling temperatures in direct sunlight, and keep the water well over 100 degrees, even over night! Perfect for you DIY, home improvement, solar hot water heater.
In stock and shipping immediately. We look forward to getting you up and running with solar heat today!