Re: nichrome wire insulation


<runcyclexcski@xxxxxxxxx>

I am building a compact air heater as a hobby project where the air is
blown between fine fins of several aluminum heat sinks. The
temperature needs to be raised from ~0C to ~37C and needs to handle
air flows of up to ~100 L/min. I did an envelope calculation taking
into account heat capacity of dry air, and it appears that I would
need ~100W, 300W to be safe, for that.

So I want to run a nichrome wire in a spiral pattern along the surface
of the aluminum heat sinks. But wouldn't that cause a short? Can I get
insulated nichrome which would conduct heat, but not conduct
electricity? Any suggestions?


** Yep - buy a few of these:

http://au.farnell.com/jsp/Passive+Components/Resistors,+Thermistors+&+Potentiometers/WELWYN/WH50+330R+JI/displayProduct.jsp?sku=9508317&_requestid=94795

A totally stupid WOFTAM just to heat some air.



........ Phil


.

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