Modeling/design 1

[desnov74]

Question on desing/classification of a heat exchanger:

For commercial ice machine unit evaporators, with an ice cube forming mold. (for something like a Manitowoc or scottsman like unit) How would one model/design such a system(going back to fundamentals). Cross-flow or counter flow. In addition, how might one model account for the build up of ice?

thanks!

 

[MarauderX]

Hmmm... there seem to be a lot of info missing. I'd lot at your application... you say you are making ice cubes, so you might want a mechanical system that can sense when the cubes are frozen and remove them from a tray.
The heat exchanger might be an additional step that takes away some of your efficiency... unless I'm not understanding what you are doing or how.

http://www.eypmcf.com

 

[gepman]

Most evaporators are not considered parallel flow or counter flow since there is a phase change. You can model this evaporator as constant temperature on the refrigerant side (even though it is probably a DX unit with some superheat). On the water side it would be convection while the water is a liquid and then conduction when the water has turned to ice. Depending on your geometry (cube, tube, or other shape) you can easily model your heat transfer.

 

[desnov74]

GEPMAN

THIS IS A GOOD APPROACH, MAKES TOTAL SENSE INTUITIVELY! THANKS