On Jul 6, 2024, at 11:30?PM, Miket_NYC via groups.io <mctaglieri@...> wrote:
Speaking?of heat, some of you might be interested in a modification I made to my minilathe about 15?years ago. To keep the electronics from overheating, I drilled holes in the cover with screening on the inside so no swarf would get in. I have no idea whether this helped or not,? but it can't hurt.
Most of the parts are rated for at least 80C. Parts will work OK even if they are so hot they ould burn your skin. ? ? That said service life can depend on temperature.
With air cooling, the cooling efferct depends on the square root of the air velocity. ?So you get the most gain with the fist small amount of airflow and then after that diminishing return
The first increment is simple convection. ?Hot air raises and creates air motion. ?Better if you put hole in ther top and in the bottom. ? The lower holes are just as important as the holes near the top. ?The idea is to allow the air to flow. ? ? ? Then if there is not enough movement by convection, add a fan. ? ? Ideally you keep the electronics at about 40C or less.
On Sun, Jul 7, 2024, 1:07 AM Ralph Lehotsky via <ralphlehotsky=
[email protected]> wrote:
And once the inside gets hot, it takes longer to cool it down, as the insulation keeps the heat in
ralphie
Dave,?
Insulation DOES NOT STOP heat
permeation/infiltration, It simply slows it down, (13 times or 30
times no insulation at all),
so that a smaller cooling source, or
heating source in winter, can more easily maintain a temperature
inside the insulated container,
keeping the conditioned space more
resistant to outside temperatures, not immune.?
What kind of windows do you have?
Windows are very energy inefficient, no matter what they say about
them.?
Windows will never equal walls in
insulation value....
Sorry for your heat, was 101 here in
Atlanta for 1 day
Stay safe!
On 7/6/2024 9:53 PM, davesmith1800
wrote:
When into my hobby shop and was 114° it insulated R13 walls
ceiling R30.?
My wife and doctor does want working hot weather so put some of my
projects on hold till getting cooler.?
At less paint dries fast.?
PS see you are very close to where I live
Dave?
On Sat, Jul 6, 2024 at 06:35 PM, gcvisalia@... wrote:
?
Yea, just a few degree cooler here in visalia. But still
hot enough to melt things. Sunday will be 113.
?
george
?
On Saturday, July 6, 2024 at 03:35:16 PM PDT,
davesmith1800
<davesmith1@...> wrote:
?
?
I was wondering why
fleeling Hot?
Check tv . No one is letting run my mini lathe.
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