Many people have trouble understanding how the Solasyphon works. Therefore we thought that we would use a thermal imaging camera to see inside the Solasyphon and the tank during typical solar conditions.
The Hot Water Storage Cylinder is a 170 Lit capacity Stainless Steel direct mains indirect pressurised cylinder. The test period was three hours; this has been compressed into about a minute. The tank was full or cold water at the beginning of the test.
The solar collector temperature was at about 60⁰C for the duration of the test. The solar panel was a 20 tube evacuated tube collector If you look closely you can see the solar flow and return at the top of the Solasyphon actually pulsing as the solar fluid enters the heat exchanger inside the Solasyphon.
You can see clearly how quickly solar heated water starts to gather at the top of the cylinder. In real time this starts to happen within 5 minutes producing almost instant hot water if the sun is shining.
This process of heating the existing cylinder from the top down continues until the entire cylinder is heated by the end of the three hour test. This film demonstrates better than any words just how well the Solasyphon works in practice.