Heating a small fluid stream. 3

[itsmoked]

Anyone got a name or source for really small in-line electric heaters? Something in the sub 500W range for heating H₂O?

Maybe a semicon supplier, or pharmaceuticals, or lab instruments.

I'm having no luck with google, et al.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[roydm]

We have a supercritical reactor where we use the SS tubing itself as the resistance element. Ground both ends and connect 24 VAC in the middle with some sort of thyristor circuit controlling the primary winding. It gives very precise temperature control.
Roy

 

[itsmoked]

Oh that is sweet!!

I will have to try that.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[roydm]

Run the tubing in a double hairpin fashon so that all the transformer connections are close together and transformer leads are very short.
Another option if using 1/4" tubing would be to remove the secondary of a transformer and wind the tubing in it's place clamping both ends together so the secondary is effectivly shorted out.
Roy