I do the wood burner dryer thing and posted some about it long ago on here maybe year or two ago? I think some others might do it too.
Back to solar though, different thing!
As long as you have the heat source it will work fine. That's all it's doing is blowing around hot air as it spins so it doesn't matter how the air became hot to begin with, as long as clean air, no smoke etc.. of course.
Dry hot air in, wet hot air out. You might even be able to make a heat exchanger to reclaim the heat in the exhausted air so fresh air is preheated before going into the solar heater also.
The thing I wonder about though, dryers move alot of air, can you heat that much air that fast?
Maybe a couple double walled solar heat stacks, air up through a center pipe, back down between center and outer pipe. Preheats going up center and heats comming down, painted black, maybe behind glass in an insulated box? IF your reclaiming the heat exhausted then the longer it runs and circulates air the hotter it may get once running also.
I think something like that would work here in the mid south, MO. USA, not sure about up north though.
Basically as long as the motor is spinning the drum and blowing air the clothes will dry, just takes longer if the air is not hot and faster if air is hot. Heck clothes dry on the line in the shade in a breeze right
Or hanging on the bathroom shower rod they dry also.
So basically no way it won't work, just a question of how well will it work?