Is it possible that the greater heat retention of the thicker walled bowl serves to keep the ember burning with less frequent puffing? Thus a smoldering ember, especially if there is a difference in bowl diameter/draft hole size could provide satisfactory smoke volume for less rapid airflow?
As we see here in the first diagram, it seems that yer valve gear is intrudin' on yer sand pipes and the steam- powered whistle done fogged up the cab windows. Which is causin' excessive heat in yer chimney.
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Does that one smoke cooler than this one:As we see here in the first diagram, it seems that yer valve gear is intrudin' on yer sand pipes and the steam- powered whistle done fogged up the cab windows. Which is causin' excessive heat in yer chimney.
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A larger diameter bowl would only push more volume of smoke if you took larger draws. This isn't the case. My point is that the rate through the stem is constant; therefore, the rate through the ember is a dependent variable which is inversely related to the diameter of the bowl.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:
The problem with that is that the entire surface of the pack doesn't remain constantly ignited and the ember burns down an inverted cone not adhering to the bore of the chamber necessitating tamper usage to guide the unburned tobacco to the warmer center of the pack to be burned.A larger diameter bowl would only push more volume of smoke if you took larger draws. This isn't the case. My point is that the rate through the stem is constant; therefore, the rate through the ember is a dependent variable which is inversely related to the diameter of the bowl.
The previous post I commented on suggested that if I draw 100mL of smoke at 50mL/sec through stems with identical draft holes, it will move faster out of the stem if the bowl is wider because venturi effect.The problem with that is that the entire surface of the pack doesn't remain constantly ignited and the ember burns down an inverted cone not adhering to the bore of the chamber necessitating tamper usage to guide the unburned tobacco to the warmer center of the pack to be burned.
As for the cone theory, the same volume of air moving through a wider cone will be moving slower, and therefore not be burning as hot.
Is it possible that the greater heat retention of the thicker walled bowl serves to keep the ember burning with less frequent puffing? Thus a smoldering ember, especially if there is a difference in bowl diameter/draft hole size could provide satisfactory smoke volume for less rapid airflow?
Unfortunately, I am looking more and more like that avatar! I now do have a very white beard, though no fedora. And days of wearing a suit coat are far behind me.I read these nuggets as if they're being spoken by the man pictured in your avatar.
Yes, yes, yes! But not discernible except by highly calibrated equipment, or a man with a palate and brain far superior to most of us.Is it possible that the greater heat retention of the thicker walled bowl serves to keep the ember burning with less frequent puffing? Thus a smoldering ember, especially if there is a difference in bowl diameter/draft hole size could provide satisfactory smoke volume for less rapid airflow?