Solar heating panel

[JMCKG]

Has anyone experience of installing solar heating in a polutunnel? Know of companies that supply kit?

[MarkPelican]

I'm in the process of making my own using an old radiator and a 12v pond pump and solar panel. When the sun shines on the solar panel, it will pump water around the radiator and store it in a waterbutt in the polytunnel.

(My plan is to enhance it by comparing the temperature in the Polytunnel and the waterbutt using a Raspberry Pi and pumping the water around another system when the temperature in the butt is higher than the temperature in the polytunnel).

[Colco]

Has anyone experience of installing solar heating in a polutunnel? Know of companies that supply kit?

12V Solar Thermal Off-grid kit 210 ltr [210L-TH-SFB5028-12V] - £1,185.00 : Remote Power UK, Off-grid renewable solutions brought to you by Raine or Shine

not cheap but they do work

[jonny the plant pot]

My polytunnel is 110 degrees today I need cooling

[MarkPelican]

So what you need is a solar powered fan and some control logic to turn it on. All part of my plan with a Raspberry Pi.