|Recent additions - electrical heater box and growlight panel, both on test|
I've put this on a separate post to my original, because the whole design has now become a little more complex !
After building the two identical electrical resistance heating elements, I spotted a 6" (150 mm) 24 VDC fan at our local car boot sale a couple of weeks ago. This was snapped up for £2.
With this addition, I thought I could maybe improve on my original free-convection idea and wire up this fan in parallel to our two heating elements, to push the air over the heaters.