SolarTwin

[simond]

Anyone seen or fitted this?

It uses a solar voltaic powered pump and no antifreeze. The solar panels and pipework are designed to expand and freeze in cold weather.

No power supply, no antifreeze, only one moving part (the aforementioned varispeed pump).

It is a direct system, eg: the water running through the panel is what you bathe in. Limescale is not likely to lodge because of the expansion and contraction of the pipe.

We have been asked to connect a couple up, in principle it looks a fascinating approach. I'm intrigued, has anyone run one in the field?

 

[billy bob]

I don't rate Solartwin personally, they used to say in their litreature that a water softener was recommended.

 

[Agile]

I think I have heard of a problem but I have forgotten what it was.

Might have an application in a cabin without mains power though.

Tony

 

[Doctor Drivel]

I had good long talk with the designer once. The only negative part was that at times the pump may be pumping heat out of the cylinder into the panels as there was no differential controller. However he convinced me that it was the overall performance that mattered and the simplicity meaning higher reliability.