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Indirect Solar Geysers


Indirect Solar Geysers

Indirect solar geysers also consist of one or more solar panels or evacuated tubes.

Instead of pumping water into the panels directly as one would with a direct system, an anti-freeze substance circulates through the panels.

Once the liquid inside the panels is hot, it flows to the geyser system.

The liquid then either circulates in a sleeve that is fitted over the geyser, or into copper pipes inside the geyser thus heating the water.

The copper pipes are a less effective way of heating the water in the system because only a small volume of water comes into contact with the pipes at any given time.

An indirect geyser system has a longer life span, because the anti-freeze is non-corrosive.

It also retains heat longer and can’t freeze, even in the coldest conditions.

  • Very popular in climates that are prone to freezing.
  • Solar water heater system can be used in areas with hard or poor water conditions.
  • It tends to be more expensive than a direct solar geyser.
  • Requires a yearly maintenance due to the heat transfer fluid (glycol) that needs to be replaced or topped up.


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