3 ms·
6x for the raw materials before you account for the production process. I'm curious. What mechanism would lead to an insulator being favored in a heat exchange
by fc417fc802 2y ago
6x for the raw materials before you account for the production process.
I'm curious. What mechanism would lead to an insulator being favored in a heat exchanger?
Fair point about aluminum and temperature. As a layman an engine block is high temperature to me. I guess this would be extremely useful for more exotic stuff.
- kragen 2y agoIf the fluid path through the heat exchanger is very short and the contact area is very large, preventing lengthwise conduction of heat from one end of the fluid path to the other, rather than getting enough conduction between the fluids, should become the performance-limiting factor. See https://dercuano.github.io/notes/capillary-heat-exchanger.html https://dercuano.github.io/notes/capillary-heat-exchanger.ht.... I could be wrong about this, but I didn't just make it up; I got it from Lingai Luo's book on heat and mass transfer intensification, which hopefully I've understood correctly.
- fc417fc802 2y agoNo I think you've understood that correctly. I'd count that as one of those things that's blindingly obvious once it's pointed out but not until then. With 3D printing I wonder if you could insert bands of insulator into an otherwise conductive wall? But you're dealing with large (potentially ridiculously so) temperature ranges so I wonder if it would prove difficult to match the thermal properties of the two materials closely enough. I now have the weirdest desire to play with heat exchanger designs that I have absolutely zero use for. I've been nerd sniped.