On Sun, 22 Jan 2006 16:43:21 GMT, Ignoramus5470
wrote:

It's usable and almost finished. Needs some kind of "guards" on both
sides.

http://igor.chudov.com/projects/Garage-Heater/

Don Foreman said that not so bright red color of the coils is fine, I
will look for a bigger fan at acceptable price, but for now will use
what I have. The fan I have now is about 230 CFM.

i

I think I said that glowing some won't hurt the coils since coils in
toasters and radiant heaters also glow. I also recommended using a
larger fan. Glowing coils could result in undesirably high enclosure
temperature.

On Sun, 22 Jan 2006 23:11:53 GMT, Ignoramus5470
wrote:


I will indeed look for a good fan, I just could not find a good deal
yet. I am mostly looking for a Comair Rotron Caravelle type fan. 10"
diameter, 550 CFM. That would about double the CFM compared to now.

I am not ready to pay $50 for it, like some ebay sellers are asking.

I guess! That's almost new price.

Check out
http://tinyurl.com/9mvsh

In article ,
Ignoramus5470 wrote:

I also measured temperature on the outside of the housing. In the
hottest point, the temperature is 94 degrees Celsius.

....and what is the insulation temperature rating for the wires inside
this enclosure?

--
Cats, coffee, chocolate...vices to live by

"Ignoramus19860" wrote in message
...
On Mon, 23 Jan 2006 13:22:51 GMT, Ecnerwal
wrote:
In article ,
Ignoramus5470 wrote:

I also measured temperature on the outside of the housing. In the
hottest point, the temperature is 94 degrees Celsius.

...and what is the insulation temperature rating for the wires inside
this enclosure?


The hottest temperature of 94 degree was not registered anywhere near
the wires.

The "shelf" that separates the wires from the heater is much cooler, I
forgot the numbers but it is perhaps 40 degrees C or so. There is a
second fan that pushes air through the electrical wiring part of this
heater, to keep it cool.

i

Maybe I missed it somewhere, but what happens if it is unattended and either
fan fails or a piece of something jams a fan or blocks the airflow? You
might want to incorporate some sort of safety overtemperature shutdown.
Think furnace or dryer safety thermostatic switch.

Looks like a pretty neat and practical project.

Don Young