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Aadhi Water Heater manufacture in india | Coimbatore | Chennai


Aadhi Solar Water heating (SWH) is the conversion of sunlight into heat for water heating using a solar thermal collector. A variety of configurations are available at varying cost to provide solutions in different climates and latitudes. SWHs are widely used for residential and some industrial applications.

Features of AADHI Solar Tank Specification

  • Inner tank made up of 316 grade stainless steel tank.
  • Outer tank is made up of 304 grade stainless steel tank.
  • 100 kg/m3 density of puff insulation for high retention for more than 72 hours.
  • Concealed electrical backup optional to protect from electric shock.
  • Turbulence preventer to maintain the consistent discharge of hot water at constant temperature.
  • Sacrificial anode to prevent salt sedimentation.
  • Deep dished ended inner tank side covers to withstand the pressure.
  • Galvanized color steel powder coated support stands, (or) aluminiyam suport tank.
  • Pressure and vacuum release valves.
  • SS baffle unit.
Comparison between FPC and ETC

S No

Evacuated Tube Collector (ETC)

Flat Plate Collector


Quick heat Generation

Slow heat Generation


Heat absorbing surface is always perpendicular to the sun-rays because of the cylindrical collector glass tube. Hence peak absorption always.

The collector fins and tubes being flat, the incident sun-rays will be at 90 degrees
only at noon. So the peak absorption is also only during this time.


Vacuum inside the collector tube reduces heat loss at night

Heat loss will be more in collector panels at night.


Negligible scaling of tubes -can be cleaned manually (Inner dia 37 mm).
Consequent loss of efficiency is minimum.

Heavy scaling of copper tubes which cannot be cleaned manually as bore dia is
12.50mm, causing substantial loss in the efficiency of the system.


Satisfactory performance in cold conditions.

Performance falls significantly on cloudy and winter days


Increment in temperature from ambient temperature is 100c to 500c on clear sunny days.

Increment in temperature from ambient temperature is 10°c to 40°c.


Advanced technology at a competitive price.

Outdated technology, high price.

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