I agree Han this does not sound right but the equipment was in side the
shop, it never comes outside. The inside temperature was the outside
temperature. All doors wide open all day even when the front blew in.
Basically the temperature in the shop dropped before the equipment
There was something strange going on.
His 16' door which was open faced south. The colder air did not
directly enter the shop except through the small back side door. And
the iron did not feel cool when I was wiping it down, IIRC. We
literally watched this going on just before we quit for the day.
Now may be I have my seasons wrong, but the 16' was wide open all day
and we normally don't stay cool/cold all day long and have a warm front
change the temperature that fast. Our cold fronts bring a much more
sudden and drastic temperature change than out warm fronts do, and to
state again, this all happened with in a matter of a few minutes.
front dropped the air temp to 20C. The relative humidity would be 102%
If it's 90F and 55% RH, anything cooler than 71F will get wet.
If it's 30C and 55% RH, anything cooler than 19.96C will get wet.
Reduce the RH to 50% and it happens at 18.42C
Yep, I remember the incident, well. LOL. It was at Ruskin, and I remember
the cause was opening the shop door, when it had been cooler the day
before, onto a foggy, relatively warmer morning. I also remember being
pissed because I had not covered the tools the night before with those
special covers that I have for that exact situation, a weather report that
calls for much warmer, foggy conditions the next morning. :)
That all happened at the end of the day, you and I had been working
together. You stayed late to finish drying and protecting the surfaces.
And IIRC you bought the covers after that when I pointed to the HTC
And please accept my apologies for that Bull Shit response. I was not
thinking. Seriously I know and agree with what you said about
condensation. But I instantly recalled that odd incident in Swingman's
garage and that prompted my jerk knee response.
According to our wives, that's already a given ... in that we think so
much alike that discussing who came up with which idea to do something,
when, and in which order, and one way or another, is a fify fifty tossup. :)
OK ... you certainly got me scratching my head.
I distinctly remember having two, weather related, shop rust incidents
of that nature, one indeed at the Ruskin location... both, in my memory,
being _immediately upon_ "opening the overhead door".
You sure it was Ruskin ... we moved the equipment there in late Oct/2008?
AAMOF, that combination, to this day, always making me reluctant to open
the overhead door without checking/being aware of a temperature
differential, especially after the first time it happened after my 24/7
wall mounted fan went out at Oberlin, which moved enough air for it to
not normally be an issue.
I simply do not recall a "cold front" ever being the cause, but hey, it
wouldn't be the first time I wore shorts and t-shirt in 30 degree
weather without noticing the cold.
... but that STILL doesn't explain why, <drumroll>:
The _science_ is on _my_ side!
That's a given. Whether "you" are on the side of science is the question.
For some of the set of "you" that is doubtful. Karl is at least one who is
on the side of science.
But then, my son-in-law, the high school math teacher has a T-shirt that
Just another service we offer.
You can have heated debates between scientists who both are very convinced
they are right, and at first glance from their arguments they both are
right, but, wait, that can't be ... So the problem becomes who made a
mistake in reasoning, or viewpoint, or observation. It sometimes isn't easy
to see at all. And that leaves out those arguments that are indeed based
on flawed basic points, which there are too.
-We get it up here in Central Ontario for a couple of weeks a year -
and I experienced it a LOT when I was in Zambia. Didn't know you COULD
have RH over 100% - but under certain conditions it happens - it's not
raining, or even really "misty" but swing anything through the air at
any speed and it gets wet (instead of drying off).
A drop in temperature and everything in the shop got wet -
particularly if a slight breeze and the shade of the roof kept the
inside shop temp just below the outside air temperature (Thermal mass
of concrete shop cooled off over-night and sun on the ground in the
yard heated the air above - nothing to have air temp out in the yard
46C, (115F) and the shop a relatively comfortable 35C (95F) or even
cooler, then have the clouds and breeze move in and the outside
temperture drop a few degrees.
With Victoria Falls, the worlds largest humidifier 10 Km down the
road, October was HELL. The humidity was aproaching 100%, and you
KNEW it wasn't going to rain for another 6 weeks!!!
On 2/14/2012 11:25 PM, firstname.lastname@example.org wrote:
Relative humidifies over 100% are possible, and can happen with quick
change in temperatures. They can also happen when there is nothing to
cause the formation of the precipitant,(condensation).
Supersaturation is use a lot in the chemical industry when the product
requires a precipitation of purify the product. In some incidences the
supersaturation is produced by boiling, either at room temperature, to
reduce the volume and increase the concentration of the material.
Please re-read what I said. Inside your house it is 70% relative humidity,
and outside it is zero Fahrenheit? You must have 17humifiers going full
blast!! No wonder that the warm, moist air in your rooms condenses on the
cold windows ...
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