On Fri, 12 Aug 2022, Rich Shepard wrote:

On Thu, 11 Aug 2022, Keith Lofstrom wrote:

Maybe not; I presume roasting coffee beans emit a lot of steam, with a
crazy-varying specific heat compared to room air.

Keith,

It's not steam, but smoke. Heavy smoke. Now I use a 3" corrugated hose (the
type used for clothes dryer exhaust) through a hole in a wood panel set in
the kitchen window. The smoke has attracted neighbors who come over to check
out what I'm doing. :-)

I can attest to the volume of smoke produced during the roasting of coffee beans. I roasted beans in very small quantities, and I still had to keep the garage door open for anything more than a single batch -- even during the Colorado winters.

--
Paul Heinlein
[email protected]
45°22'48" N, 122°35'36" W

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