Passive coolant systems for wearable armor design

[maximus]

i am designing an armor in my head (along with hundreds of other things) and i want to know specifics about cooling systems. I've decided on a coolant system pumped by feet/arm movements/etc but i need to know: how effective are such systems? specifically, how long would they last, how cold can they get, etc? Of course i do not have a coolant being pumped around my armour constantly (i'd freeze just by standing still) i have a water like substance that passes by a main housing system that contains coolants. the temperature of the circulating fluid would be determined by the amount that it was allowed to pass by the coolant. i suppose a computer could control that. is there a system like this being utilized or one more effective?

 

[nbryan5]

Coolant systems that are powered by foot/arm movements or other physical exertion are not commonly used, as they tend to be too unreliable and inefficient. However, some companies have developed more reliable systems that can be powered by kinetic energy to cool the user.These systems use a combination of thermoelectric cooling and water-based coolants, both of which are designed to absorb heat from the wearer's body. The thermoelectric device converts the kinetic energy into electricity, which is then used to power a fan or other cooling device. The water-based coolant is then circulated around the wearer's body, absorbing and dissipating heat.The effectiveness of these systems depends on the type of coolant and the amount of kinetic energy produced, but generally speaking, these systems can last up to several hours and can reduce the wearer's body temperature by up to 10°F (5.5°C). There are also other types of cooling systems that can be used, such as evaporative cooling, which uses a porous material to absorb sweat from the body and then evaporates it away, allowing for a cooling effect. This type of system is often used in sports apparel.