## söndag 24 maj 2015

### Two-way Heat Transfer and 2nd Law: Contradiction!

The discussion with edX in the previous post exhibits a "greenhouse effect" connected to "back radiation" or "Downwelling Longwave Radiation DLR" from a cold atmosphere to a warmer Earth surface, as a part of two-way radiative heat transfer between two bodies each supposed to emit independently of the other according to a Stefan-Boltzmann law of the form $Q=\sigma T^4$ with $T$ body temperature and $\sigma$ a positive constant.

As the discussion shows, advocating two-way heat transfer requires an argument showing that  what appears to be a violation of the 2nd law of thermodynamics with the colder body transfering heat to the warmer, is only apparent. The argument is then that the heat transfer is always bigger from the warmer and so the net transfer is always from warm to cold.

However, this argument is contradictory: Each body is supposed to emit independently of the other, yet at the same time the two transfer processes must somehow be linked to guarantee that the net transfer always comes out right, even if they are nearly equal. The transfer processes are thus assumed to be both independent and dependent, which is a contradiction. And contradictory physics can only be non-physical illusion.

Unfortunately, in modern physics contradictions such as wave-particle contradiction, have come to be accepted by Bohr sophistery as "complementarity" or "duality". A "round square" is thus in modern physics not a contradiction, but just expresses "complementary" or "dual" properties of some higher physical existence incomprehensible to human understanding but still physics. But sophistery is not science and contradictory physics is non-physics.

In this context, recall that the idea of two-way heat transfer was used by Schwarzschild in 1906 to set up a simple model for radiative heat transfer allowing a simple analytical solution as a linear function. The unphysical aspect of Schwarzschild'd model is exposed in the recent post Unphysical Schwarzschild vs Physical Model for Radiative Heat transfer. What was unphysical in 1906 is still unphysical today.

#### 5 kommentarer:

1. "As the discussion shows, advocating two-way heat transfer requires an argument showing that what appears to be a violation of the 2nd law of thermodynamics with the colder body transfering heat to the warmer, is only apparent. "

What do you mean with apparent?

When you do thermodynamics it is of course important to consider all the subprocesses that makes up the thermodynamic process.

Where on earth did the totally baked idea come from that a two way transfer would violate the second law? The second law only sets a limit filtering out those processes that are not irreversible (or reversible in the ideal limit). Why would a two way transfer not be irreversible???

2. there is no need for linking whatsoever in the standard theory. each black body emits solely depending on its temperature.
but it is interesting to learn that you think that some kind of spooky coordination among objects at different temperatures is unphysical.

3. You do not try to understand what I am saying, just oppose, and so our discussion is not constructive.

4. That's a very legit question.

Why would a two way transfer be irreversible?

T. Durden

5. __Not__ be that is of course

T. Durden