Cooling fan with Recycle System

I searched and tried out a bunch of cooling designs for the hot end and this is my version. I decide to use a concept from motor cycles and other air resonance designs and made this one with an expansion tank and recycle/balance lines and it has proved to work well. The only thing reused from a previous design is the attachment to the fan and that has even been modified to a point. I couldn't find the original on that design but would like to reference if I can in the future.

Happy printin