Solar heating for greenhouses.
Hi friends, have any of you installed and got working a solar heating system for your greenhouse?
I am very interested in this, basically first you dig a large hole in the ground in the green house, insulate the hole , fill it with a heat retaining product eg old bricks from a storage heater, install a small chimney and cover the hole.
A solar panel is used to (via a battery) drive a 12v dc fan, it pumps the hot air from the top of the greenhouse (through a plastic pipe) to the base of the heatsink (hole in ground) this heats up the bricks during the day. During the night the pump pushes cool air from the green house into the heatsink which through a small chimney pushes out the stored heat.
Hoped you followed it – I found the idea just googling greenhouse solar heating. The cost doesn’t seem too high and on the coldest of nights, or very dull overcast days I’ll use my old paraffin heater.
I’ve just got to persuade OH to go along with the ‘little’ project.
If any of you have done something similar I’m all ears.
- 21 Aug, 2010
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