Accession Number : ADA262262


Title :   Lightweight Passive Microclimate Cooling Device


Descriptive Note : Final rept. Aug 1991-Mar 1992


Corporate Author : MAINSTREAM ENGINEERING CORP ROCKLEDGE FL


Personal Author(s) : Parrish, Clyde F ; Scaringe, Robert P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262262.pdf


Report Date : Mar 1993


Pagination or Media Count : 68


Abstract : The intermittent adsorption cooling concept has been successfully demonstrated and 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.


Descriptors :   *COOLING AND VENTILATING EQUIPMENT , *PROTECTIVE CLOTHING , ADSORPTION , ASSEMBLY , BACKPACKS , BEDDING , BODY TEMPERATURE , CONSTRUCTION , COOLING , COPPER , DESICCANTS , FABRICATION , FINS , HEAT STRESS(PHYSIOLOGY) , LIGHTWEIGHT , PRESSURE , PROTOTYPES , STAINLESS STEEL , TEMPERATURE , TEST AND EVALUATION , VESTS , WATER COOLING


Subject Categories : Chemical, Biological and Radiological Warfare
      Protective Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE