SOLAR WATER HEATING SYSTEMS

Introduction & Benefits

Solar water heating systems are the easiest entry point into renewable energy in a domestic situation. A solar water heating system includes a solar geyser/cylinder and a collector panel.

The system works on the principle of natural thermosiphon – hot fluids rise and cooler fluids fall. The fluid (anti-freeze agents) inside the collectors is heated by the sun and flows up into the heat exchange jacket surrounding the storage cylinder. Its heat is transferred to the water inside the cylinder and the now cooler fluid then flows to the bottom of the collector, ready to begin the cycle again.

The most standard applications used for water heating purposes include:

  • Domestic - solar geysers, pool & under floor heaters
  • Commercial – heating large volumes of water such as dams, reservoirs etc.

Benefits:

  • Solar water heaters provide a reduction in greenhouse gas emissions
  • Solar water heating systems can prevent up to 4.5 tons of carbon dioxide from entering the atmosphere annually
  • Solar energy is clean and inexhaustible and reduces our dependence on fossil fuels and does not pollute the environment
  • Solar energy places less demand on Eskom’s energy supply system and reduces the dependence on Eskom as our energy provider
  • It can save the consumer up to 50% of their electricity bill on a
    monthly basis.

Comparison: DOMESTIC HOT WATER GEYSERS

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