I asked in this question if there was a heat powered fan for residential steam rads, to increase air flow over them since natural flow is pretty weak.
Alas, looks like some wood stoves can use such a device, but in the $300 range and they are pretty bulky.
Looking at parts, I found some cheaper ($40 US) Seebeck effect generators (Reverse of Peltier effect) and I am wondering if I can build one myself that is worthwhile.
Found a Seebeck generator here that looks to be about the right size, attach to my rad right where the steam comes in, stick a computer style heat sink on the back (bum one from work), and then run the power into a small fan.
Now to find a small fan I can fit under the rad, and needs low DC power.
I am tempted to experiment, since for $40 this should be simple enough.
I know my rad is not hot enough at 100C max, but I wonder if I can get enough power out to run a small battery powered fan styled motor...
Am I going to fail? Or is there a chance this might succeed?