[pianotech] Protection from underfloor heating

[Ron Nossaman]

On 12/11/2012 8:40 AM, Dean May wrote:
> Radiant heat works not by warming the air, though there is some of that, but
> by radiating the heat, duh. ;-)

It's misnamed. It's only radiant to a small degree (sorry). It primarily 
warms the air, like a radiator (also misnamed) which circulates by 
convection. The radiator, granted radiates much more because it operates 
at a much higher temperature.


>Objects with mass in view of the radiant
> heat source absorb the heat and began to warm in temperature. The closer the
> object to the source, the more heat is absorbed. A piano with lots of mass
> sitting very close to the source will absorb lots of heat. While air, with
> negligible mass, will not absorb much heat. So measuring the air's
> temperature will not be any kind of indicator as to how much heat the piano
> is getting.

Talk to desert glider pilots and buzzards about thermals some day.
Ron N