India is truly blessed with bountiful and bright sunshine

for most part of the year. Tapping sun’s energy potential

for solar water heating has been a harbinger for

households which not only want to save on power bills,

but more importantly with planned load shedding in many

parts of the city and erratic power supply in many smaller

towns harnessing solar power for heating water is the

only solution. What’s more , it is simple to install, easy to

maintain and helps the environment by being 100%

eco-friendly and green.

IDEAL FOR A REFRESHINGBATHING EXPERIENCE

S O L A R W A T E R H E A T E R

Thermosyphon System (Non Pressure Type)The working is based on the principle of black body heat absorption, The black surface of the collector absorbs the heat from the solar radiation and transfers it to the water circulating through the copper tubes of the absorber panel. Hot water being lighter than cold water rises to the top of the collector and subsequently-into the hot water storage tank. This cycle goes on during hours of sunshine. This phenomenon is called Thermosyphon. At the end of the day the tank is full of hot water at designed temperature.

APPLICATIONS• Generally installed

for domestic applications

• Ideal for fixed one time usage

• They have fixed volume but varying temperatures

Forced Flow Systems (Pressure Type)Cold water from cold water tank is pumped into the collector. The solenoid valve/pump motor On/Off operation controlled by temperature sensor gets activated as soon as the temperature in the solar collector attains ‘x’ degrees pre-selected by customer and will remain ON till all the hot water is replaced by cold water in the collectors. This cycle goes on throughout the day during sunshine period, till the tank is full. Liquid Level Controller controls the overflow of hot water after the hot water tank is full. The operating cycle depends on the intensity of solar intensity and this frequency is maximum during around noon.

APPLICATIONS • Generally installed for industrial & commercial applications• Ideally suited for deferred usage• There are 2 types of forced flow systems i) Open loop systems.

They have varying volume but fixed temperature. ii) Closed loop systems.

They have fixed volume but varying temperature.

Forced-circulation type (Pressure type)Ideal for commercial and indusrtial establishments

Here the water requirement is high. Water is pumped from collector to the tank. This type has a greater control on temperature output.

Evacuated Glass Tube Collector Type (ETC)

Flat Plate Copper Collector Type (FPC)

Higher capacity also available as per site requirement

100, 150, 200, 250, 500 LPD (Litres per day)

125, 200, 250, 375, 500, 625, 750, 900, 1000, 1250, 1500, 1750, 2000, 2500, 3000, & + LPD (Litres per day)

Thermosyphon

Forced flow

TYPES OF WORKING PRINCIPLECAPACITIESMODELS

WORKING PRINCIPLE

SOUTH

Insulated Hot WaterStorage Tank

AirVentPipe

Hot water outlet

ElectricalBackupoptional

Sola

r Col

lect

or

represents Gate Valve

OverheadCold Water Tank

Insulated Hot WaterStorage Tank

Cold WaterSupply

ElectricalBackup

Pump

N.R.V

G.V.

Strainer

LevelController Sensor

Control Panel

Temp. Sensor

Solar Colle

ctor

SOUTH

Cold WaterStorage Tank

Water circulates from the solar collector to the inner container by natural thermosyphon process.

Hot water gets collected at top portion of tank

PUF Insulation

Cold water entering in the collector through the side copper pipe into the bottom header line

Hot water rising in the copper tubes due to difference in densities between hot & cold water

Air vent pipe

Hot water outlet from tank

Gate valve

Cold water supply from overhead tankNRV

30 31

Thermosyphon type (Non-pressure type)Ideal for domestic use

This is most suitable for domestic applications. Operating on a simple principle of physics, hot water has low density than cold water and has a tendency to rise. By this natural phenomenon, water circulates from solar collector to storage tank through natural convection