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Cheshire, United Kingdom Gb

Green house solar heating.
Has anybody installed an underground heatsink? I am looking at doing this but would like to here from anybody who has already got one working.



I would check with Gubler Orchids (, they have been using a system like that for many years now.

21 Aug, 2010


This link might be useful

22 Aug, 2010


Don't be over optimistic, as you don't get energy from nothing. At best, you might get a little heat stored which will even out temperature drops, but no system is going to heat your greenhouse in the depths of winter from solar energy. The only serious 'alternative energy' system would have to be a heat pump with an extensive network of ground heat source tubes.

22 Aug, 2010


True, the Gubler system works because they are in the high desert of California, and their annual average temperature is just about right for growing orchids. Areas with lower average temperatures will have to grow plants that can take chillier conditions, or add some artificial heat.

24 Aug, 2010

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