Like I said, I never used one, let alone took it apart. And for sure experience beats theory, but how do you think it does this? The temperature display on the digital one shows set point and produced temperatures on the two displays, right? What is it doing, predicting what will happen if you turn the fan on? What happens if you turn the fan on and off, shouldn't it go nuts, giving bursts of hot air?
I'm not sure where the 'intermittently exposed' part comes from, isn't usually a one shot deal? I don't remember a lot from Thermodynamics, but for sure there was no such thing as "infrared convection" when I was there. There was "Infrared Radiation", "forced and natural convection" and conduction. But those were the only 3 ways to move heat. Well, I suppose you could boil water, make steam, generate electricity, transmit it down a power line.....
Maybe someday I'll get a chance to poke inside one, for sure the first thing on the list is going to be a thermocouple in the bowl. I'm not expecting 500 degree air.
Not that any of this changes our favorite portable convection vape a lot. Still fun conjecture. Thanks for the additional information.
OF