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Gentech Solar Solar Water Heater ETC Type

Gentech Solar Solutions Introduces high efficient Gentech Solar Solar Water Heaters for Domestic & Industrial applications, which is as per International Standards and made of high-density Borosilicate Tubes and coated (triple coating), which are vacuumed / air evacuated to prevent conduction and convection heat losses.

“A New Revolution with World-Class Technology”


Inner Storage TankCoated with epoxy Paint
Brand Gentech Solar
Capacity 100LPD, 150LPD, 200LPD, 500LPD
Type Evacuated Glass Tubes.
Outer Cladding 0.5 mm Galvanised Sheet with Powder Caoting
Insulation 50mm PUF Isulation
Stand 1.6 mm GI Sheet with Powder Coating

Special Features Provided in the System

System Dry Run Protection, System High-Pressure Protection, System Extreme High-Temperature Protection, System Evacuation Protection, Sacrificial Anode-of-Magnesium, Electrical Backup, Pressure Reducing Value, Air Relief Valve / Vent.

What’s…Vacuum Tube Collector type Solar Water Heaters works efficiently in cold climates or in 70 Deg. Hot water outlet applications? The construction of the collector tube is similar to a thermos flask, the piece in that it comprises of two borosilicate glass tubes, one sealed inside the other. The outside of the inner glass tube is coated with a solar selector surface (Al-N/Al) & the space between the two tubes is evacuated & maintained at a high vacuum. This Vacuum created inside the high strength borosilicate glass tube act as an insulator supporting heat loss & enhanced performance.

The use of 3.3 borosilicate glass makes this vacuum tube highly resistant to chemical & thermal shock

They are designed to suit hard water heating. There is no bonding of scales on a smooth surface of the glass tube. Cleaning of the collector is very easy.

Tube Specification:

Length (normal) 1800 mm
Outer Tube Dia 58 mm
Inner Tube Dia 47 mm
Glass Thickness 1.6 mm
Thermal Expansion 3.3 x 10-6 Deg C.
Absorptive Coating Grade Al-N/Al
Absorbance >92% Am (1.5)
Emittance < 8%
Vacuum P<5 x 10
Stapnation Temp. >200 deg. C.
Heat Loss < 0.8 W/m2 deg C
Maximum Strength 0.8 MPa.