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Evaluation Of The Efficiency Of Liquid Cooling Garments Using A Thermal Manikin
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Book Synopsis Evaluation of the Efficiency of Liquid Cooling Garments Using a Thermal Manikin by :
Download or read book Evaluation of the Efficiency of Liquid Cooling Garments Using a Thermal Manikin written by and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid cooling garments (LCG) absorb heat from both the human body and the environment. The cooling efficiency is influenced by the configurations of the LCG and clothing ensembles worn over the LCG (outer clothing, e.g. personal protective equipment), and environmental conditions. Thermal manikins (TM) have been used to evaluate the performance of LCG systems and to determine the amount of heat that a LCG can extract from a TM. However, effects of the outer clothing's insulation on cooling efficiency have not been investigated. The purpose of this study was to use a TM to investigate the relationship between LCG efficiency, insulation of the outer clothing, and water inlet temperature (Tin).
Book Synopsis Thermal Manikin Evaluation of Liquid Cooling Garments Intended for Use in Hazardous Waste Management by : J. P. Dionne
Download or read book Thermal Manikin Evaluation of Liquid Cooling Garments Intended for Use in Hazardous Waste Management written by J. P. Dionne and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal manikins are valuable tools for quantitatively evaluating the performance of protective clothing ensembles and microclimate cooling systems. The goal of this investigation was to examine the performance of Coretech personal cooling systems, designed to reduce the effects of physiological and environmental heat stress, using a sweating thermal manikin. A sweating manikin takes into account the effective physiological evaporative heat transfer. Three tubesuits containing different densities of tubing were evaluated on the thermal manikin in conjunction with body armor and two Chemical-Biological suits (SPM and JSLIST). The experiments were carried out in an environmental chamber set at a temperature of 35 C with a relative humidity of 30%. For the tubesuits, two flow rates were tested and the heat removal rates were obtained by measuring the amount of power required to maintain the manikin's surface at a constant temperature of 35 C. The sweating rates were adjusted to maintain a fully wetted manikin surface at the above environmental conditions. For fluid flow rates ranging from approximately 250 to 750 ml/min, and inlet temperatures to the tubesuit ranging from 7 to 10 C, heat removal rates between 220 W to 284 W were measured, indicating the effectiveness of tubesuits at removing excessive body heat. This research was performed at the U.S. Army Soldier and Biological Chemical Command (SBCCOM) in Natick, Massachusetts.
Book Synopsis Efficiency of Liquid Cooling Garments: Prediction and Manikin Measurement by :
Download or read book Efficiency of Liquid Cooling Garments: Prediction and Manikin Measurement written by and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We studied the efficiency of liquid cooling garments (LCG) and its relationship to the insulation of outer clothing perfusate inlet temperatures and environmental conditions by both theoretical analysis and thermal manikin (TM) testing.
Book Synopsis Manikins for Textile Evaluation by : Rajkishore Nayak
Download or read book Manikins for Textile Evaluation written by Rajkishore Nayak and published by Woodhead Publishing. This book was released on 2017-06-15 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manikins for Textile Evaluation is a key resource for all those engaged in textile and apparel development and production, and for academics engaged in research into textile science and technology. Creating garments that work with the human form, both stationary and in motion, is a complex task that requires extensive testing and evaluation. Manikins allow for performance testing of textiles in a safe, controlled, and appropriate environment, and are a key element in developing new textile products. Everyday apparel needs to be assessed for comfort, sizing and fit, and ergonomics, while technical and protective garments require extensive safety and performance testing. Manikins therefore range from simple representations of the human body to complex designs that simulate body temperature, sweating, and motion. Manikins are safe for use in hazardous testing environments, such as fire and flame protection, where wearer trials would be impossible. This book provides extensive coverage of manikin-based evaluation of protective, heat and flame resistant, medical, and automotive textile applications. The role of manikins in the development of day-to-day garments is also discussed, including fit, comfort, and ergonomics. The book is a key resource for all those engaged in textile and apparel development and production, and for academics engaged in research into textile science and technology. Delivers theoretical and practical guidance on evaluation using manikins that is of benefit to anyone developing textile products Offers a range of perspectives on high-performance textiles from an international team of authors with diverse expertise in academic research, and textile development and manufacture Provides systematic and comprehensive coverage of the topic from fabric construction, through product development, to the range of current and potential applications that exploit high-performance textile technology
Download or read book Protective Clothing written by F. Wang and published by Elsevier. This book was released on 2014-08-04 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protective clothing protects wearers from hostile environments, including extremes of heat and cold. Whilst some types of protective clothing may be designed primarily for non-thermal hazards (e.g. biological hazards), a key challenge in all protective clothing remains wearer comfort and the management of thermal stress (i.e. excessive heat or cold). This book reviews key types of protective clothing, technologies for heating and cooling and, finally, modeling aspects of thermal stress and strain. Explores different types of protective clothing, their uses and their requirements, with an emphasis on full-scale or prototype clothing, including immersion suits, body armour and space suits Considers novel and commercial technologies for regulating temperature in protective clothing, including phase change materials, shape memory alloys, electrically heated clothing and air and water perfusion-based cooling systems Reviews the human thermoregulatory system and the methods of modelling of thermal stress in protective clothing through various conditions, including cold water survival and firefighting
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.
Download or read book ATA Annual Report. 1971 written by and published by . This book was released on 1972 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Using a Sweating Manikin, Controlled by a Human Physiological Model, to Evaluate Liquid Cooling Garments by :
Download or read book Using a Sweating Manikin, Controlled by a Human Physiological Model, to Evaluate Liquid Cooling Garments written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses the use of NREL's Advanced Automotive Manikin (ADAM) for evaluating NASA's liquid cooling garments for space suits.
Book Synopsis Firefighters' Clothing and Equipment by : Guowen Song
Download or read book Firefighters' Clothing and Equipment written by Guowen Song and published by CRC Press. This book was released on 2018-12-07 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protective clothing and equipment used for firefighters protect them against their harsh working environment loaded with strong thermal hazards, elevated environmental temperatures, low oxygen concentration and smoke. This book describes an in-depth review of firefighting clothing and equipment, and explicitly addresses the performance of protection and comfort in textile engineering, clothing design, and evaluation. Covered topics include protection and comfort requirements for firefighting clothing and equipment, testing methods, standards and performance evaluation, smart firefighting clothing for first responders and numerical modeling of performance of firefighting clothing. Key Features Presents complete overview about the requirements of firefighters' protective clothing/thermal protective materials Addresses performance of protection and comfort Includes human thermoregulation system and responses to firefighting working environment Discusses SMART firefighting clothing and equipment Suggests "how to improve the wear comfort?
Book Synopsis Performance of Protective Clothing by : Portia Dalecene Yarborough
Download or read book Performance of Protective Clothing written by Portia Dalecene Yarborough and published by ASTM International. This book was released on 2005 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and evaluation of automatic control for human/liquid cooling garment thermal interaction by : Karen LuJean Nyberg
Download or read book Design and evaluation of automatic control for human/liquid cooling garment thermal interaction written by Karen LuJean Nyberg and published by . This book was released on 1998 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Manikin Evaluation of Passive and Active Cooling Garments to Improve Comfort of Military Body Armor by :
Download or read book Thermal Manikin Evaluation of Passive and Active Cooling Garments to Improve Comfort of Military Body Armor written by and published by . This book was released on 2007 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluated two different garments designed to increase ventilation and evaporative cooling under Interceptor Body Armor: a passive, Interceptor Ventilation Vest (IVV); and an active, battery-powered, Body Ventilation System (BVS). Both were tested for thermal (Rt, sq m x C/W) and evaporative resistance (Re, sq m x kPa/W) on a thermal manikin (TM), according to ASTM standards. TM results showed Rt and Re increased (16% and 26%, respectively) when IBA was worn. However, increases were lower (9% and 14%) with IVV under IBA. These lowered resistances increased TM evaporative cooling potential approximately 15%. With the BVS blower unit ON, TM measurements of Rt and Re were lower (17% and 20%), when compared to OFF values. This increased TM evaporative cooling potential approximately 18%. Military use of these garments could allow for increases in sweat evaporation and overall thermal comfort during operational heat exposure.
Book Synopsis Standard Methods for Thermal Comfort Assessment of Clothing by : Ivana Špelić
Download or read book Standard Methods for Thermal Comfort Assessment of Clothing written by Ivana Špelić and published by CRC Press. This book was released on 2019-06-20 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing detailed analysis of the thermal comfort assessment of clothing as the basis for developing standards, this book discusses the thermal protective role of clothing as a way of modelling heat transfer from the body, general thermal regulation of humans, and the importance of globally accepted test methods and standards to improve quality. New materials and discoveries in the study of thermal comfort necessitate the need for standard improvements and update. The development of international standards and the unification of testing methods is of crucial significance to ensure cost reduction and health protection. The book promotes instruments, methods, implementation of unified specifications, and the definition of standards so that a clear quality management system can be established, for both production systems and testing methods. It discusses standards in ergonomics of the thermal environment, clothing thermal characteristics, and subjective assessment of thermal comfort, which allows for systematic control of the measuring methods and the services and final products that are distributed on the global market. This book is aimed at industry professionals, researchers, and advanced students working in textile and clothing engineering, comfort testing, and ergonomics.
Book Synopsis Standard Methods for Thermal Comfort Assessment of Clothing by : Ivana Špelić
Download or read book Standard Methods for Thermal Comfort Assessment of Clothing written by Ivana Špelić and published by CRC Press. This book was released on 2019-06-20 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing detailed analysis of the thermal comfort assessment of clothing as the basis for developing standards, this book discusses the thermal protective role of clothing as a way of modelling heat transfer from the body, general thermal regulation of humans, and the importance of globally accepted test methods and standards to improve quality. New materials and discoveries in the study of thermal comfort necessitate the need for standard improvements and update. The development of international standards and the unification of testing methods is of crucial significance to ensure cost reduction and health protection. The book promotes instruments, methods, implementation of unified specifications, and the definition of standards so that a clear quality management system can be established, for both production systems and testing methods. It discusses standards in ergonomics of the thermal environment, clothing thermal characteristics, and subjective assessment of thermal comfort, which allows for systematic control of the measuring methods and the services and final products that are distributed on the global market. This book is aimed at industry professionals, researchers, and advanced students working in textile and clothing engineering, comfort testing, and ergonomics.
Book Synopsis Evaluating the Physiological Performance of a Liquid Cooling Garment Used to Control Heat Stress in Hazmat Protective Ensembles by : KM. Semeniuk
Download or read book Evaluating the Physiological Performance of a Liquid Cooling Garment Used to Control Heat Stress in Hazmat Protective Ensembles written by KM. Semeniuk and published by . This book was released on 2005 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to evaluate the physiological performance of a liquid cooling garment in controlling heat stress in individuals wearing Hazmat protective ensembles. Five heat-acclimated male subjects completed three trials each: standard work clothing (WC), Hazmat suit (H), and a Hazmat suit with torso cooling (HC). All testing took place in an environmental chamber (35°C and 50 % relative humidity) with subjects walking on a treadmill at a metabolic rate of 300 W. Trials were performed until subjects completed the maximum 90 min, achieved the predetermined endpoints in core temperature (38.5°C) or heart rate (95 % of age predicted maximum), or symptoms of fatigue, disorientation, and discomfort forced the participant to discontinue or the researchers to end the test. A significant difference (P
Download or read book Liquid Cooled Garments written by and published by . This book was released on 1975 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid cooled garments employed in several applications in which severe heat is encountered are discussed. In particular, the use of the garments to replace air line cooling units in a variety of industrial processing situations is discussed. (Author) (NTRL site)
Book Synopsis Effectiveness of a Prototype Microclimate Cooling System for Use with Chemical Protective Clothing by : Nancy A. Pimental
Download or read book Effectiveness of a Prototype Microclimate Cooling System for Use with Chemical Protective Clothing written by Nancy A. Pimental and published by . This book was released on 1990 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
