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Solar Vacuum Tubes

Solar Vacuum Tubes. What Is a Solar Vacuum tube?. A Solar Vacuum tube is used to produce a large amount of heat by trapping sunlight and UV rays between two layers of vacuum-sealed glass by help of a patented three-layer coating system. What’s it used for?.

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Solar Vacuum Tubes

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  1. Solar Vacuum Tubes

  2. What Is a Solar Vacuum tube? A Solar Vacuum tube is used to produce a large amount of heat by trapping sunlight and UV rays between two layers of vacuum-sealed glass by help of a patented three-layer coating system.

  3. What’s it used for? Solar Vacuum tubes are primarly used to heat water and can be used wherever heat is needed: • Pools • Hot tubs • In floor heating • Water Radiators • Domestic hot water • Saunas • Drive way de-icing • Garage heating • Off-grid Cottages • Boats • Bottling • Sterilizing • Outdoor showers • Car Washes

  4. How It Works(Without heat pipe) Systems without a heat pipe run on natural convection. • Natural convection is where cooler liquid (Water) flows to the lowest point and hot liquid rises (Water) creating an even flow in and out of the tube.

  5. How a Vacuum Tube Works • Vacuum tubes contain two layers of glass with an opening at one end, and closing with a nipple where air was extracted to make a vacuum pressurized seal on the other. • The Getter and Spring holders are used to make sure the two layers stay out of contact .

  6. How a Vacuum Tube Works (Cont) There are three coatings used in vacuum tubes: Infrared-reflection Layer (trap UV) Absorbance Layer (Absorb heat) Anti-Reflection Layer (Keep sunlight and UV rays inside) *Solar vacuum tubes can produce heat WITHOUT sun light, they can produce heat with just UV rays. ie. cloudy days

  7. How a Heat Pipe Works Heat pipes are used for colder climates, and year round use in Canada. When heat pipes are used, no liquid goes inside the tube. • Made of Borrelen soft copper • Heat transfer point located at tip (Goes into Manifold) • Liquid boils at 30⁰C and natural convection takes over making vapour rise and condense.

  8. Heat Output • One tube’s temperature reaches anywhere between 180 to 400 degrees • The outer layer is cold to the touch so there’s no risk of being burnt. For example, on a 22.6 degree overcast day, the interior of the tube reached an average of 336.2 degrees Celcius

  9. Stats Vacuum Tube 1.8 m Tube Out side diameter mm58 Tube Inside diameter mm    47 Wall Thickness mm           1.6 Transmittance Outer Tube <8% Absorbency Percentage %＞93% Heat Loss w/m2               <0.8W/(m2¡ãC) Strength Pressure Tested 0.8Mpa Lifetime                            15 years Transmittance Outer Tube <8% Strength Pressure Tested Mpa   0.8Mpa Certification:  EU,CE,KeyMark ISO9001 Heat Pipe For 1.8 m Boil Point35℃ Test for Transfer Heat>120w Thick Heat Transfer at End0.8mm thickness, ￠14mm Grade Copper (Soft) %>99.95% Copper Thickness 0.6mm thickness, ￠8mm

  10. Source Sources North American Solar Solutions RR 2 Lot 28 Con 8 # 496773 Clarksburg, Ontario N0H-1J0, Canada Email: nasolarsolutions@bmts.com Phone: 1-705-443-0705 Fax: 1-705-446-2420 www. nasolarsolutions.com

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