Agni Solar Systems

Industrial/Commercial Solar Water Heating Solutions

Maximize Efficiency, Minimize Costs

Agni Solar’s industrial and commercial solar water heating solutions are engineered to deliver high energy output and significant cost savings. Whether you manage a hotel, hospital, manufacturing plant, or any other commercial establishment, our systems ensure a steady supply of hot water, essential for various operational needs. By harnessing the sun’s abundant power, businesses can balance their commercial and environmental impact effectively.

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Why Choose Solar Water Heating for Your Business?

Operational Efficiency

  • Quick and easy access to heating solutions is critical for many industries. Solar water heating offers a reliable, cost-effective solution, reducing dependence on expensive electric or fuel-fired boilers.

Sustainability

  • Solar water heaters help your business reduce its carbon footprint by leveraging renewable energy.

Cost Savings

  • Lower your energy bills significantly by switching to solar-powered water heating.

Technological Excellence in Solar Water Heating

Flat Plate Collectors

  • Our commercial solar water heating systems feature aluminum-body solar collectors with toughened glass tops. The copper absorber plate inside is selectively coated for maximum heat absorption, transferring it efficiently to the water. The entire system is well-insulated to prevent heat loss.

Evacuated Tube Collectors

  • Ideal for larger-scale applications, these systems consist of evacuated glass tubes with a vacuum in between for superior insulation. Solar radiation passes through the outer tube and is absorbed by the inner tube, heating the water effectively.

Tailored to Your Needs

Thermosyphon Systems

Ideal for consistent, maintenance-free operation without the need for electricity. The system relies on natural water circulation due to temperature differences, offering a simple solution for hot water needs.

Forced Flow Systems

For applications requiring controlled temperature, our forced flow systems use a control panel and pump to circulate water through the collectors until the desired temperature is reached. This automated system ensures that hot water is available on demand.

All-Year-Round Hot Water

Even during non-sunny days, our systems are designed to keep your operations running smoothly. Optional heating elements can be integrated into the insulated storage tank, ensuring a continuous supply of hot water throughout the year.

We are more than happy to help you!

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Frequently Asked Questions

Solar water heating systems are classified based on the type of solar collector used:
  1. Evacuated Glass Tube (ETC) Type
  2. Flat Plate Collector (FPC) Type
Flat Plate Collector (FPC) Type Solar Water Heating System
  • In an FPC system, the fins are made of copper tubes with selective Nickel Chrome plating, which are ultrasonically welded to copper tubes.
  • These fins are covered with toughened glass and enclosed in an insulated box with an aluminum frame.
  • The water temperature in this system can reach up to 60-65°C.
Evacuated Tube Collector (ETC) Type Solar Water Heating System
  • Evacuated tubes act as the absorbers in a solar water heating system.
  • They absorb solar energy and convert it into heat for water heating.
  • Each evacuated tube consists of two borosilicate glass tubes.
  • The outer tube is transparent, allowing light rays to pass through with minimal reflection.
  • The inner tube is coated with a special selective coating (Al-N/Al) that ensures high solar radiation absorption and minimal reflection.

The capacity of a solar water heating system is defined in liters per day (LPD).

  • 125 LPD Flat Plate Collector (FPC) requires approximately 3 sq. meters of shadow-free area.
  • 100 LPD Evacuated Tube Collector (ETC) requires approximately 1.5 sq. meters of shadow-free area.
  • Approximately 25 liters of hot water per person per day is considered while sizing a solar water heating system.
  • For a family of 4 persons with one bathroom, the required capacity is:
    25 liters × 4 persons = 100 liters per day.

Solar water heating systems can be used for:

  1. Domestic (Residential) purposes
  2. Commercial applications (Hotels, Hospitals, Laundries, etc.)
  3. Industrial applications

Soft water with a hardness level below 150 PPM is recommended

  • If hard water is used, scale deposition will occur inside tubes and solar collectors over time.
  • This scale can be removed by descaling with acid periodically.
  • Domestic solar water heating systems do not require significant maintenance.
  • Monthly cleaning of solar collectors improves system efficiency.
  • The annual maintenance cost varies from ₹5 per liter to ₹10 per liter, depending on the system’s capacity and type.

A 100 LPD solar water heating system can prevent the emission of 1.5 tons of CO₂ per year, which is equivalent to planting around 40 trees annually

  • A 100 LPD solar water heating system can save approximately 1,500 units of electricity per year (assuming 300 working days, excluding 65 rainy or cloudy days).
  • At an electricity rate of ₹10 per unit, the annual savings would be ₹10,000.
  • The payback period for:
    • 125 LPD FPC type is around 2 years.
    • 100 LPD ETC type is around 1.5 years.
  • The solar tank is insulated to store hot water for 1-2 days.
  • In case of prolonged cloudy or rainy weather, an electrical heater can be installed in the solar tank to ensure a continuous hot water supply.