RV Maintenance Thermal HalfLife |

In all my work of insulating the RV, I have been working with thermal entropy: The simple and basic Law of Cooling.

And that notion is one of "HalfLife". Normally, Half-Life is a term used in radioactive decay. For example the Neutron will decay into three particles, a Proton, Electron and Neutrino, in 14.7 minutes. I assert, sense mathematics can not tell the difference between Thermal Entropy and particle decay, that there IS no difference; BOTH are Entropy.

I have established in previous pages that: My RV has an Rval= -6.95 units: area x degree x time/BTU

My RV has a time constant k=-0.1269 units:t-1

And they are equivalent, in that they express the same time constant.

Dividing the natural log of two by my RV time constant k gives:

5.4622 Hours

In my RV, it takes 5.4 hours for the temperature to drop one half of the temperature difference. And another 5.4 hours to drop half of that difference. And so on.

This is so much easier to remember than ether the -0.13 k value,

or the -6.95 R-value.

Wow! This is convenient!