acr[]mion

Is it possible to have a peltier device that was around 5-15*C on the hot side and maybe just below 0*C on the cold side? If yes, what size would it be, and how much power would I require?

...And how do I generate power for this thing?... ....As much as I like magic, I have a feeling that it doens't apply in this case...............

With regards to power generation, I am proposing to use kinetic energy. I'm in the process of trying to figure out the range of movements that the device would be exposed to. ....Oscillating? Centrifugal? ...Bahhh.... I find the logistics of it all perplexing. Expired bacon knows more about generators than I do.

My cooling wrist band also needs to generate its own power, as any external power sources would be too cumbersome. I'm trying to figure out the most effective type of motion that would activate the generator....

Sweating is pretty useless though in humid conditions, since the atmosphere is already saturated with moisture, the sweat can't evaporate from the skin surface. Overall humidity affects our perception of the temperature (http://www.coolvest.com/dangers_of_heat_stress.htm) Also, i surveyed a whole lot of 'moshers', and the general concensus is that whatever form the device will take, it has to be unobtrusive (visually and physically) and either concealed or socially acceptable. Most women don't mind it as a fashion accessory, but the guys prefer something less "gay". And no one wants to wear something that is really obvious as a cooling device. Imagine someone in a Korn moshpit with a fan strapped to their wrist... ...hha.. They would gain little sympathy from fellow moshers.

CFCs eh.... I'd have to commit myself to a lifetime of tree hugging to make amends

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.