Thermoelectrics are very inefficient only when the heat dissipation on hot side is not very efficient. Our heatsink is created using fractal microsurfaces and is very efficient in dissipating heat making our device very efficient. We get a cooling of 14 watts and COP of 1.3 on our wrist device. Our device maintains a constant temperature between 44 F to 50 F in a ambient of 98F and humidity of 60% and removes 14 watts. Please reach out to me @ kranthi at dhamausa dot com
Skips Arm Day wrote:
As an engineer, it seems to me that using thermoelectrics would be highly inefficient and expensive. Large batteries would be required to get substantial cooling, and based on the size of the device I'd be concerned that the amount of cooling is not dramatic. I'd love to see their specs though. I have lots of ideas for improved cooling for runners, if any dhamasport people are reading this and interested in talking to a PhD student as a consultant let me know!