Straight Grain: Better Heat Transfer/Conduction

[sablebrush52]

Curious about the rune scrip that follows your name. Pardon my presumption, but would you provide the translation?

It says that he really loves to have people following him.

 

[Chasing Embers]

Most of my artisan sandblasts are straight grain (at my request, they make perfect ring blasts) some are smooth such as these.



They really don't get any warmer than this.



A cool surface pipe has tobacco evenly packed and smoked slowly regardless of grain orientation.

 

[sablebrush52]

I would think that wall thickness and cadence would have a greater effect than grain.

This ^^^^. All of these other speculations are fugitive at best.

 

[mingc]

Amazing what a quick search turns up: Thermal properties of wood - https://www.woodproducts.fi/content/wood-a-material-2
"In the direction of the grain, the thermal conductivity of wood is about twice what it is perpendicular to the grain."

Brilliant find!

Brilliant find also!

 

[saltedplug]

This is one of those topics that invites so very many replies that it's now at 4 pages, though I really,
for the life of me, can't say why. But just for grins let's say that through learned discussion the truth was established that straight grain radiated heat the best. OK. But tell me what you plan to do with this magnificent but utterly useless finding? Don't you have something better to do than contribute to this thread? You could:

1. Yell at the kids
2. Start a fight with your wife
3. Beat on your neighbor's door and scream at him
for no reason.
4. Call the cops on him for screaming obscenities at
you.
5. Whack off
6. Check with your wife to see if there's anything
you could say to make her angrier.

You get it. There's a lot of things that need doing out there, many that have a result worth the making, much more so than this ridiculous thread!

This thread was stillborn. Life left it on the launchpad and and never made it into space. It's dark or anti matter. It's vortex sucks you in and you and your brain are brain drained.

 

[F4RM3R]

Amazing what a quick search turns up: Thermal properties of wood - https://www.woodproducts.fi/content/wood-a-material-2
"In the direction of the grain, the thermal conductivity of wood is about twice what it is perpendicular to the grain."

Am I reading this incorrectly? It says :" r example, the thermal conductivity of pine in the direction of the grain is 0.22 W/moC, and perpendicular to the grain 0.14 W/moC"

I think the higher number means better conductivity. Correct me if I'm wrong though! I just seen a few members concluding that straight grain has less conductivity than cross grain, when this would mean the opposite, no?

 

[hoosierpipeguy]

Am I reading this incorrectly? It says :" r example, the thermal conductivity of pine in the direction of the grain is 0.22 W/moC, and perpendicular to the grain 0.14 W/moC"

I think the higher number means better conductivity. Correct me if I'm wrong though! I just seen a few members concluding that straight grain has less conductivity than cross grain, when this would mean the opposite, no?

It is correct. And it means that a straight grain pipe would not conduct the heat from inside the bowl to the outside as fast because the internal heat would actually be conducted perpendicular to the grain.

 

[mingc]

Am I reading this incorrectly? It says :" r example, the thermal conductivity of pine in the direction of the grain is 0.22 W/moC, and perpendicular to the grain 0.14 W/moC"

I think the higher number means better conductivity. Correct me if I'm wrong though! I just seen a few members concluding that straight grain has less conductivity than cross grain, when this would mean the opposite, no?

What I understand from that article is that wood conducts heat better in the direction of the grain than across it. All else bring equal, a finger on birdseye, because it is at the end of the grains, would feel more heat than a finger on straight grain, because the heat would have to cross against the grain to get to the finger.

 

[Kottan]

Of course a smooth bowl feels warmer to the touch, your fingers are contacting a much larger surface area.

Yes this and the overall surface (compared to a smooth) is larger so more heat can cool down per time unit.