What Are The Physics Of "Thick Wall = Cool Smoke"?

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--dante--

Lifer
Jun 11, 2020
1,062
7,165
Pittsburgh, PA USA
I couldn't say -- I keep my pipes reamed to pretty much the original bowl as much as possible. Every time I had a pipe I thought went "bad", reaming it fixed it right up, so I just don't really allow much cake to develop.
 
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Reactions: CoffeeAndBourbon
Apr 2, 2018
3,113
35,209
Idong,South Korea.
I think it's all a marketing trick.Dry tobacco equals cool smoke.Proper drilling equals cool smoke.lack of turbulence equals cool smoke.Slow smoking equals a cool smoke.Thick walls equal a pipe that won't burn your hand due to over enthusiastic puffing.I think that thick walls contribute somewhat by absorbing some of the heat,but are not a major factor.Just my opinion.
 

Misanthrope

Can't Leave
Apr 26, 2020
367
1,126
Texas
I have no real scientific grounding or really any idea of how any of this works at a physical level, but I can anecdotally observe that when I first started, all of my pipes smoked hot, all tobaccos tasted like hot air or like I’d fished a cig butt out of a wet public ashtray, the bowls were almost uncomfortably warm, and everything except Prince Albert had a bite like an angry alligator.

At some point, I figured out how to smoke less stupid, did a bunch of research, found this place, and eventually I got to the point where it doesn’t matter which pipe I use, it smokes cool and I can taste the meat instead of the heat, and formerly bitey tobaccos are more of a pleasantly spicy tingle on my tongue. So, I guess I’m in the “technique matters more, but physical properties contribute a bit” camp.
 
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Reactions: aspiring_sage

May 2, 2020
4,664
23,771
Louisiana
Lord have mercy... seven pages of this? Complete with thermodynamics equations! ?
I’ve got pipes with thick walls, and thin. Not a discernible difference between them. Much ado about nothing if you ask me. But hey, whatever floats one’s boat, I reckon. Seems to me that there are much more important/influential factors in the temperature of the smoke than bowl thickness. If thickness mattered at all in any practical way, wouldn’t the shank and stem thicknesses be more important anyway? ?‍♂️ This whole thing seems like an exercise in migraine production, which is the antithesis of what pipe smoking oughta be about. But hey, I’m just a bumpkin typing on a cell phone, so what do I know?! ?
 
Jan 28, 2018
12,955
134,678
67
Sarasota, FL
I concede that the delta in temperature as a result of fluid velocity might be negligible and noticed only by the most sensitive of tongues; yet, a pipe with a larger chamber diameter would push more volume of smoke through the hole and it'd travel faster than it would in a pipe with smaller chamber diameter. The pipe smoking system is nothing but a Venturi tube:

venturi-effect-flow-pressure-vector-illustration-diagram-fluid-air-movement-dynamical-physics-example-experiment-tube-model-173140979.jpg

Have you ever tried sucking through a Venturi Tube? I think you have your physics a bit confused.
 

BSticks

Might Stick Around
Nov 22, 2019
76
288
25
Kellogg, MN
It's really hard to take someone serious who is telling you that the smoke is not cooler, when you have the pipe in your mouth and the smoke feels cooler. Why? I don't think anyone can answer that. But, they can't tell me that I don't 'feel" what I am feeling. Period.

Maybe as the thinner bowls heat up, it makes the smoke hotter? Magic? Some sorta weird inner bowl dynamic that armchair physicist can't fathom? I put myself in the armchair category, BTW.

Maybe your fat pipes aren't as good as my fat pipes? puffy
So, to be clear, I haven't noticed this phenomenon yet. Although I have rather curious mind.
Here's what I came up with: thicker walled, larger bowls have more surface area AND thermal mass. Both of which are insanely important when taking about heat dissipation. While the big pipes may hold heat better, my theory is that the surface area allows them to get rid of that heat quicker. More contact with the air=cooler pipe.
Just a thought from a computer nerd that messes around with liquid cooling! ?
 
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