We are blessed with Solar Energy in abundance at no cost. The solar radiation incident on the surface of the earth can be conveniently utilized for the benefit of human society. One of the popular devices that harness the solar energy is solar hot water system (SHWS). A solar water heater consists of a collector to collect solar energy and an insulated storage tank to store hot water.

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Based on the collector system, solar water heaters can be of two types.

Flat Plate Collectors (FPC) based Solar Water Heaters

The solar radiation is absorbed by Flat Plate Collectors which consist of an insulated outer metallic box covered on the top with glass sheet. Inside there are blackened metallic absorber (selectively coated) sheets with built in channels or riser tubes to carry water. The absorber absorbs the solar radiation and transfers the heat to the flowing water. There are 60 BIS approved manufacturers of Solar Flat Plate Collectors.

Evacuated Tube Collectors (ETC) based Solar Water Heaters Evacuated

Tube Collector is made of double layer borosilicate glass tubes evacuated for providing insulation. The outer wall of the inner tube is coated with selective absorbing material. This helps absorption of solar radiation and transfers the heat to the water which flows through the inner tube.

VIRAAT Solar Water Heater (ETC System) works on a simple principle ‘Black body heat absorption principle’. The principle says, ‘black colour absorbs maximum heat, more than any other colour’.

 These glass tubes are made of extremely strong borosilicate glass with special triple layer coating for excellent solar radiation absorption and minimal emission.  Radiation capture is maximum due to 270o tracking.

  The Domestic solar water heater generates hot water from sunlight which has the flow of liquid capacity to become heat in day time. And the water is stored in large volume of storage tank helps for the domestic purpose includes bathing, cleaning etc.


 TRIPLE LAYER COATING ensures maximum temperature.

 Separate air vent pipe with unique support ensures protection against wind.

 Electrical backup inbuilt for rainy seasons.

 Fully Stainless Steel model available for corrosion protection.

 Hard water compatible (upto 500 ppm) as the salt settles in the glass tube & easily cleanable.

 Double walled hard borosilicate glass tube with 1.6 mm thick ensures better heating & also protect from hailstones.

 Vacuum Insulation reduces the conductive heat loss hence efficient than FPC.

 Domestic Solar Water Heater is built with superior quality copper flat plate Solar Collector for maximum absorption of solar energy, and a stainless steel Storage Tank with P-Puf Insulation for heat retention upto 96 hours. This most modern water heater is equipped with an optional electrical heating system to ensure uninterrupted hot water supply, round the year.

 Advanced Dual Ultrasonic Bonding guarantees max. temperature even at a low ambient.

 Highest efficient collector (79% peak) ensures fastest heating.

 Concealed auxiliary electrical heater with temperature controller provides 100% Safety.

 Mg Alloy Sacrificial Anode prevents galvanic corrosion.

 100% customer satisfaction achieved with 24x7 helpline.

 High quality tubes made from borosilicate glass

 No clogging/choking

 Long lasting

 Inner glass tube is coated with the world best magnetron sputtering Hi-Tech, layers of AL – N with AL base

 Vacuum jacket insulation

 Heats water to a very high temperature

 Easy to install, operate and maintain

 Works efficiently with hard water

 Galvanized Iron tank for hot water storage

 Powder coated GI stand

 Safe and environment friendly

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