Lightweight Passive Microclimate Cooling Device

摘要

The intermittent adsorption cooling concept has been successfully demonstratedand has produced cooling rates in the 300 W range. The design requirement of 300 W for 6 hours has not been demonstrated due to system leaks. However, we demonstrated in laboratory experiments that were scaled to a much smaller size that we have produced 325 to 432 V of cooling. Laboratory experiments also showed the system could operate for more than 8 hours, be started and stopped, when the system contained no leaks. The current prototype was constructed of brass and copper for ease of fabrication. No consideration was given to weight. We have examined alternate methods of construction of the backpack and cylinder assembly and thin (0.01 in.) stainless steel could be used. The stainless steel sheet stock could be formed into a backpack bedding the sheets into fins, which also serve to strengthen the backpack. Also, stainless steel could be used to lower the weight of the cylinders. With these changes, the system weight including water and desiccant, is 23.8 lb.