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Microclimate Cooling Systems A Physiological Evaluation Of Two Commercial Systems
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Book Synopsis Microclimate Cooling Systems: A Physiological Evaluation of Two Commercial Systems by : Nancy A. Pimental
Download or read book Microclimate Cooling Systems: A Physiological Evaluation of Two Commercial Systems written by Nancy A. Pimental and published by . This book was released on 1988 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy Clothing and Textile Research Facility (NCTRF) conducted a laboratory evaluation to compare two commercially available, portable, liquid microclimate cooling systems for their effectiveness in reducing heat stress and for their operational characteristics. The systems were the Model 1905 Cool Vest manufactured by ILC Dover, Inc. (ILC), and the Cool Head manufactured by Life Support Systems, Inc. (LSSI). The two systems were evaluated on nine test subjects wearing the Navy utility uniform and performing light-to-moderate exercise for 3 hours in an environment of 43 C dry bulb, 29 C dew point (WBGT 36 C). Compared with a control test with no cooling, use of either cooling system enabled subjects to complete the 3-hour heat exposures. Rectal temperature responses were the same when either cooling system was used. Heart rates were slightly lower with the ILC Dover system compared to the LSSI system. The ILC systems experienced fewer failures, and were easier to operate than the LSSI systems. The ILC system is also lighter, less bulky, and much less expensive than the LSSI system. Based on their similarity in reducing heat stress, and the ILC Dover system's profile, reliability and lower cost, the ILC Dover Model 1905 Cool Vest system is recommended over the Cool Head for Navy use. This report describes the two cooling systems and the results of the heat stress evaluation. (aw).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Three Commercial Microclimate Cooling Systems by :
Download or read book Evaluation of Three Commercial Microclimate Cooling Systems written by and published by . This book was released on 1990 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three commercially available microclimate cooling systems were evaluated for their ability to reduce heat stress in men exercising in a hot environment while wearing high insulative, low permeability clothing. Five male volunteers performed three 180-min experiments (three repeats of 10 min rest, 50 min walking at 440 watts) in an environment of 38 C dry bulb (Tdb), 12 C dew point (Tdp). The cooling systems were: ILC Dover Model 19 Coolvest (ILC), mean inlet temperature 5.0 C; 2) LSSI Coolhead (LSSI), mean inlet temperature 14.5 C; and 3) Thermacor Cooling Vest (THERM), mean inlet temperature 28.3 C. Endurance time (ET), heart rate (HR), rectal temperature (Tre), mean skin temperature (Tsk), sweating rate (SR), rated perceived exertion (RPE), and thermal sensation (TS) were measured. The subjects self terminated on all LSSI tests because of headaches. Statistical analyses were performed on data collected at 60 min to have values on all subjects. Keywords: Reprints, Heat stress(Physiology), Exercise(Physiology).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Reports Awareness Circular : TRAC. by :
Download or read book Technical Reports Awareness Circular : TRAC. written by and published by . This book was released on 1988-02 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1989 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microclimate Cooling Systems by : Carl R. Janik
Download or read book Microclimate Cooling Systems written by Carl R. Janik and published by . This book was released on 1988 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Medicine and Biology written by and published by . This book was released on 1990 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Book Synopsis Determination of the Feasibility of Two Commercial Portable Microclimate Cooling Systems for Military Use by : Joseph Cohen
Download or read book Determination of the Feasibility of Two Commercial Portable Microclimate Cooling Systems for Military Use written by Joseph Cohen and published by . This book was released on 1985 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure time is limited when soldiers work in hot environments while wearing CB clothing. This study evaluated two commercial microclimate cooling systems for operational characteristics and physiological effectiveness in reducing heat stress. Eight male soldiers attempted eight 180-minute heat exposures while wearing MOPP 4 level clothing and one of two commercial systems. During these tests, subjects rested (metabolic rate 105 W) or exercised by walking on a treadmill (average metabolic rate 340 W) in a desert (49DGC 20% relative humidity, 70 W radiant heat load) and a tropic (35DGC, 75% relative humidity) environment. There was no statistical difference (P
Book Synopsis Advances in Bioheat and Mass Transfer, 1993 by : American Society of Mechanical Engineers. Winter Annual Meeting
Download or read book Advances in Bioheat and Mass Transfer, 1993 written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1993 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1989 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Five Commercial Microclimate Cooling Systems for Military Use by :
Download or read book Evaluation of Five Commercial Microclimate Cooling Systems for Military Use written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory and field evaluations were conducted to examine four ice- based portable cooling systems and one thermoelectric vehicle mounted cooling system, to assess and compare their performance under laboratory and field conditions. There were three battery-operated circulating liquid cooling garments, a passive frozen gel pack vest, and a thermoelectric circulating liquid cooling garment. The thermal manikin tests were conducted in a 35 C (95 F), 5% relative humidity, environment with the mannequins surface temperature at 35 C (95 F). The manikin was dressed in the Battle Dress Overgarment (BDO) chemical ensemble in all of the tests. Army and Air Force personnel took part in five field evaluations. These personnel provided information related to compatibility, mobility, ease of operation and donning and doffing.
Book Synopsis Evaluation of Commercial Off-the-Shelf and Government Off-the-Shelf Microclimate Cooling Systems by :
Download or read book Evaluation of Commercial Off-the-Shelf and Government Off-the-Shelf Microclimate Cooling Systems written by and published by . This book was released on 2005 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professionals in dire need of body cooling, namely the First Responder community, can currently choose from an extensive variety of commercially available microclimate cooling products incorporating a wide range of technologies. Since not all products will meet the requirements of all users, it is important to understand the characteristics of the systems that are available, prior to making a selection. Currently, no standards exist for validating microclimate cooling systems, so users are forced to rely on vendor claims when purchasing equipment. The goals of this project include searching the commercial market for all current microclimate cooling products, and evaluating a representative cross-section of products for their thermal performance. The information gathered was compiled in a database and a report, and can be provided to Emergency Responders to aid in their equipment-purchasing process.
Download or read book Textile Technology Digest written by and published by . This book was released on 1989 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USAF Physiological Studies of Personal Microclimate Cooling: A Review by :
Download or read book USAF Physiological Studies of Personal Microclimate Cooling: A Review written by and published by . This book was released on 1993 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. Air Force has accomplished a number of research studies which evaluated the efficacy of selected personal cooling approaches for alleviating heat stress in personnel wearing certain protective clothing. Most of this work involved laboratory, as opposed to field, studies and incorporated human subjects performing work in either warm or hot environments. Both air and liquid microclimate cooling systems were evaluated. The general findings include: (1) personal microclimate cooling systems (both air and liquid) were shown to remove significant quantities of body heat, (2) in general, commercially available systems were Inferior to in-house prototype units, (3) backpack (ambulatory) systems usage would likely have a limited user audience for a number of reasons, (4) some near-term; partial solutions to the problem may be at hand for selected deployments, and (5) microclimate cooling technologies on the horizon will likely not provide an optimum solution for most ground crew applications. The USAF Armstrong Laboratory has limited plans for further research in this area ... Air cooling, Microclimate liquid cooling, Heat stress, Personal cooling, Intermittent cooling.
Book Synopsis Aviation Space and Environmental Medicine by :
Download or read book Aviation Space and Environmental Medicine written by and published by . This book was released on 1991 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review, U.S. Navy (NCTRF) Evaluations of Microclimate Cooling Systems by : Walter B. Teal
Download or read book A Review, U.S. Navy (NCTRF) Evaluations of Microclimate Cooling Systems written by Walter B. Teal and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
