OK. With Wreact = 0 for T less than some activation temperature (which for moderate temperatures qualitatively matches my model), and for k_cooling (k1) greater than k_heating (k2), I see that T should exponentially decline from some high temperature down to the activation temperature and then more quickly but still exponentially decline towards T1.
How do you match all this with the red trace in Russ George`s figure.
Where do you think T2 is?
say T2 is maybe 275 degree C, and T1 is 220 degree C or whatever. No idea, we must wait for proper data to say anything. What I don't understand is that the curve seam to never go under