Abstract: A heat exchanger and method that includes the use of at least one manifold having a plurality of vanes for circulating a fluid requiring cooling. The vanes define a pair of adjacent flow channels that each has a changing cross sectional shape that varies the aspect ratio of the adjacent flow channels defined by each vane. Each vane also has a twisting or spiral shape that serves to change the orientation of each of its adjacent flow channels to even more effectively enable transfer of heat from a first fluid flowing within one of the flow channels to a second fluid flowing in the other adjacent flow channel. In various embodiments both counter-direction flow and same-direction flows are employed in the manifold.

Abstract: A heat exchanger and method that includes the use of at least one manifold having a plurality of vanes for circulating a fluid requiring cooling. The vanes define a pair of adjacent flow channels that each has a changing cross sectional shape that varies the aspect ratio of the adjacent flow channels defined by each vane. Each vane also has a twisting or spiral shape that serves to change the orientation of each of its adjacent flow channels to even more effectively enable transfer of heat from a first fluid flowing within one of the flow channels to a second fluid flowing in the other adjacent flow channel. In various embodiments both counter-direction flow and same-direction flows are employed in the manifold.

Abstract: The shoelace teacher is a round device that is implanted into the tongue of the shoe that will give a child step by step instructions on how to tie the shoe lace. This disk is pre recorded and is repeatable with these instructions, but not limited to this example: “First you make a tie, then you make one bunny ear, then you rap your lace around and push it through, and then pull”. This can be permanently fixed in one style or have a style where the disk can be removed by an adult when instruction is no longer needed. The idea is to have ready instructions for the tying of the shoe lace at all times.