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RE: Underground heating
On Tue, 31 Oct 1995, Tim Burgess wrote:
> Steve,
> Thanks for your email a few days ago. Wow have I been busy! I know what
> nichrome wire is (I come from and elecronic engineering background) could you
> tell me the name of your supplier and if possible the manufacturer and any
> cable part numbers - this will make it mauch easier for me to locate.
I got it from a place in Brisbane called G.K. (it's in Albion I think - a
suburb of Brisbane, but it's in Abbotsford road) I can get the exact name
if you like, but I have since found that Dick Smith stock it. In their
catalog it's only by the 4 metre, but I'm sure you could buy more of it...
I got the 17B&S gauge which is rated at 1.04 ohms per metre, and I used
6.2 m.
>
> I am very interested in the details of your temperature controller (if you
> are prepared to dsiclose them).
>
The report has just been completed. I'm taking it down to the Aquarioum
near me to show the guy there, I'll judge thereaction from him. However,
I don't think I will have any time next year to make them, It's a very
fiddly thing to do!
> Have you got it installed and working yet? I know it's end of year at Uni for
> you (I teach computing part time at TAFE) but surely the aquarium comes
> before anything else in your life? If only ......
It works in a bucket, but I'm pulling down my tank probably next week, so
I'll try it properly then. >
> You explained that you were going to encase the nichrome wire in plastic
> tubing, my only thought on this issue is to use heat shrink tubing. That way
> it will naturally contract around the wire and get the air out of the cable -
> better heat transfer has got to be the result. But the cost .... any thoughts
>
The plastic tubing is fine for heat transfer... it may take a minute
longer to get hot and it doesn't get AS hot, but it still gets hot. We
had to join a gap with heat shrink and yes it was water tight, but the
cost....
> As to life in the Barossa - well if you call computer consulting to farmers
> and grape growers in the country desirable - then it is very desirable. Lots
> of country, country folk - I love it.
>
> Catch you later Steve
>
>
Steve n1036416 at droid_fit.qut.edu.au (for only a few weeks more -yippe!)