So you know this oven called the San Joaquin valley ! Yes, Visalia is 45 miles south of Fresno. We had a couple of days recently of 111 degrees, and actually most of the month of July has been triple digits.I should think in Visalia you could work out some sort of solar dehydrator couldn't you? But I don't know if I would want to use that for drying stew. I used the sun to dry fruits and veggies when I lived near San Jose, and I think Visalia is hotter and drier than that. Aren't you near Fresno?
I think I will give a try to the car dehydrating. And today I rearranged the patio and freed up a table to drag out into the sun in my "way bak yard". Most of the yeard is shady, but that part gets HOT ! Need something to dehydrate now.