Noel Technologies
Noel Technologies
Uttarahalli Hobli, Bengaluru, Karnataka
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Solar Water Heating Systems

We are a leading Manufacturer of solar water heating system and redsun solar water heating system from Bengaluru, India.

Solar Water Heating System

Solar Water Heating System
  • Solar Water Heating System
  • Solar Water Heating System
  • Solar Water Heating System
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Approx. Price: Rs 20,500 / UnitGet Latest Price

Product Details:

Capacity500 lpd
Warranty5 Years
Power2.1 kW
Voltage240 V
Power SourceSolar
PhaseSingle Phase
Country of OriginMade in India

With cost and energy saving link never before, Redsun solar water heating address heating requirements for varying family sizes, climatic conditions & building types. Besides, through a strong dealer network and well trained installation team, the systems are easily accessible to end users, thus bringing solar to every home.

Product Features
  • Best in class tank
  • Suitable for hard water
  • PUF Insulation
  • 99.99% pure copper coated tubes

Your Benefits For A Lifetime
  • Hanless highest hard water tolerance limit
  • CFC-Free, very less overnight temperature drop
  • Ensures highest heat transfer and effciency
  • 1mm Thick 99.99% pure copper Tank for Long and Trouble Free Life of System

Other Details

  • Therosyphon & Forced Circulation Systems.
  • Custom-made design to suit specific applications.
  • Ideal for: Schools, Colleges, Hostels, Canteens, Hotels & Resorts, Apartments, Hospitals, Dairies and various Industries
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Redsun Solar Water Heating System

Redsun Solar Water Heating System
  • Redsun Solar Water Heating System
  • Redsun Solar Water Heating System
  • Redsun Solar Water Heating System
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Approx. Price: Rs 19,500 / UnitGet Latest Price
Product Brochure

Product Details:

Power2 kW
Voltage240 V
Vacuum RateP -<5.0x10-4Pa
Inner Diameter47 mm
Stagnation ParameterY -> 290 M2 DegreeC/KW
Power SourceSolar
Outer Diameter58 mm
Recommended Operating Pressure0.2 Kg/sq. cm.
Thickness of Glass TubeOuter tube thickness: 1.8 mm, inner tube thickness: 1.6 mm
Coefficient of Thermal Expansion3.3x10-6/k
PhaseSingle Phase
Length1800 mm and 2100 mm
Material of GlassBorosilicate Glass

Evacuated Tube Collector Solar Water Heaters - Solar Water Heater is a device which produces hot water for bathing, washing, cleaning, etc. using sunlight during sunny days. It is generally installed at the terrace or where sunlight is available and heats water during daytime which is stored in an insulated storage tank for use when required including mornings.

Working Principle of Evacuated Tube Collector (ETC) System :

Redsun 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’.

Solar water heating systems using vacuum tubes made of borosilicate glass with special coating to absorb the solar energy are called as Evacuated Tube Collector system (ETC Systems).

Vacuum tube, as shown in the sketch, is the main component, which absorbs solar energy. The vacuum tube is an assembly of two concentric, borosilicate glass tubes.

Air between the gap of two glass tubes is evacuated. It results in high level of vacuum, which acts as the best insulation to minimize the heat loss from inner tube. The black coating on the inner tube absorbs the solar energy and transfers it to the water. The water on upper side of Vacuum Tube becomes hot and thus lighter, so it starts moving upwards in the tank. At the same time cold water, which is heavy, comes downward from the tank and is stored at the bottom. The phenomenon is called as natural Thermosyphon circulation, which occurs in every tube.

Thermosyphon Systems : In this type water flows through the system and when water gets warm it rises as cooler water sinks. The collector is installed below the storage tank so that warm water will rise into the tank. These systems do not involve any pump and are more reliable.

Solar Water Heaters have several advantages over conventional water heating systems as they:
  • Reduce electricity bills: 40% of an average household’s energy bill comes from water heating.
  • Save interior space: These systems are usually located on rooftops.
    Increase safety: Solar water heaters eliminate the risk of accidents in bathrooms due to electric water heating equipment.
  • Quick payback: On average, a good quality solar water heater will have a payback period of 1½ – 2 years in Indian conditions.
  • Protect the environment: In today’s environment conscious world, you can make a difference by getting your hot water free from the sun. By replacing an electric water heater with a solar water heater, you can reduce greenhouse gas emissions by up to 3 and 4 tonnes a year – the equivalent of taking a small car off the road.

  • High quality tubes made from borosilicate glass
  • No clogging/choking
  • Long lasting
  • Better performance in winter and cloudy days
  • 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
  • Makes hot water available even on partially cloudy days
  • High quality PUF insulation for maintaining high temperature of water inside the tank
  • Compact
  • 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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Jayaprakash (CEO)
Noel Technologies
23, Carmel, 2nd Main Road, 1st Cross, Rajamma Industrial Area, Uttarahalli, Behind Subramanyapura, Police Station
Uttarahalli Hobli, Bengaluru - 560061, Karnataka, India
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