I'm currently working on my final design project at uni - designing a wearable cooling device for very humid conditions (e.g crowded rock concert), which would be worn on the wrist. I'm proposing to use an umbilical system, which means (from what I ..umm.. researched) that i need a reservoir, pump, cooling device, heat sink, power source... From what I understand, the temperature of the device needs to be kept above the dew point to
minimise condensation. My challenge is to somehow fit all that inside a wrist band/cuff and to use a motor (Wellington Motors - they are special) somewhere in the device. The other option that I have is using a series of inbuilt Sunon mini-fans (8mm square). Being a design student, I have a very limited knowledge of the issues involved. And since my
understanding of practical issues regarding physics is severely underdeveloped, I was wondering if anyone could provide me with some advice.