On 3/11/2017 at 5:45 AM, Paul Fink said:
You have the physics correct.
Not really. Specific heat is usually expressed in tems of mass. For instance, helium has roughly 6x the specific heat of brick. Bad physics to suggest that an oven sparged with helium will hold as much heat as the same one lined with brick.
My 1/2" pizza steel weighs 42 pounds, and that is significantly more mass than a 1/2" Cordierite tile of the same volume.