Performance enhancement of hybrid personal cooling clothing in a hot environment: PCM cooling energy management with additional insulation

Udayraj,; Wang, Faming; Song, Wenfang; Kong, Ying; Xu, Pengjun; Chow, C.; Noor, Nuruzzaman

doi:10.1080/00140139.2019.1596318

Cited by 37 publications

(16 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Psychologists prefer statistical votes in different scales via questionnaire to evaluate the thermal comfort, such as thermal comfort vote, thermal sensation vote, thermoreception vote, thermal preference vote, etc. [5,11,[40][41][42][43][44][45][46][47][48][49][50][51] The most widely adopted measurement of thermal comfort is the seven-point scale of thermal sensation proposed by the American Society of Heating, Refrigerating and Air-conditioning Engineers (ASHRAE), in which the neutral sensation is regarded as the comfort status at different thermal environments. [52] Thermal sensation relates to not only the existence of cold or hot stimuli from the environment, but also the lasting time of the stimuli and the individual's original physiological and psychological states.…”

Section: Basic Concept Of Thermal Comfortmentioning

confidence: 99%

Emerging Materials and Strategies for Personal Thermal Management

Liu

Shin

et al. 2020

Advanced Energy Materials

325

242

View full text Add to dashboard Cite

us warm in cold climates and shielded us from the nakedness for modesty and civilization. [1,2] Cloth is also a platform for artists, designers, and tailors to advance the clothing demands with emerging materials, process, and fashion. [2] While the majority of the functionalities of clothes lie in their physical attributes, such as their softness, breathability, air/ vapor permeability, and, of course the appearance, their role in thermal management is equally, if not more, important. The primary goal of clothing is to satisfy human being's basic needs in thermal comfort, by providing cooling in the hot environment or heating in the cold environment. [1] The energy management aspect of clothing is becoming an increasingly important and attractive aspect due to our increasing awareness to energy consumption and our persisting pursuit of comfort and health. The finite availability and the associated environmental consequence of fossil fuels have motivated us to save energy from virtually all aspects of our daily lives. A suitable thermal envelop is a necessity for our living and working. To create a comfortable indoor environment, the building heating, ventilation, and air conditioning (HVAC) systems are widely used for space cooling and heating at the expense of excessive energy consumption. [3][4][5][6] According to United States In this decade, the demands of energy saving and diverse personal thermoregulation requirements along with the emergence of wearable electronics and smart textiles give rise to the resurgence of personal thermal management (PTM) technologies. PTM, including personal cooling, heating, insulation, and thermoregulation, are far more flexible and extensive than the traditional air/liquid cooling garments for the human body. Concomitantly, many new advanced materials and strategies have emerged in this decade, promoting the thermoregulation performance and the wearing comfort of PTM simultaneously. In this review, an overview is presented of the state-ofthe-art and the prospects in this burgeoning field. The emerging materials and strategies of PTM are introduced, and classed by their thermal functions. The concept of infrared-transparent visible-opaque fabric (ITVOF) is first highlighted, as it triggers the work on advanced PTM by combining it with radiative cooling, and the corresponding implementations and realizations are subsequently introduced, followed by wearable heaters, flexible thermoelectric devices, and sweat-management Janus textiles. Finally, critical considerations on the challenges and opportunities of PTM are presented and future directions are identified, including thermally conductive polymers and fibers, physiological/psychological statistical analysis, and smart PTM strategies.

show abstract

Section: Basic Concept Of Thermal Comfortmentioning

confidence: 99%

Emerging Materials and Strategies for Personal Thermal Management

Liu

Shin

et al. 2020

Advanced Energy Materials

325

242

View full text Add to dashboard Cite

show abstract

“…A few studies have also been devoted to optimizing the design of PCM / fan garments to ensure better management of cooling energy using an additional layer of insulation in the garment structure [281], [282]. A vest with a structure of two layers of firm fabric and equipped with a pair of fans installed on the lower back and 8 PCM pockets evenly distributed on the front and back of the body was tested during the rest phases of the male subjects in activities in a hot and humid climatic chamber.…”

Section: Design Optimization Of Hybrid Cooling Garmentsmentioning

confidence: 99%

Advanced Functional Materials for Intelligent Thermoregulation in Personal Protective Equipment

Saïdi¹,

Gauvin²,

Ladhari³

et al. 2021

Preprint

View full text Add to dashboard Cite

The exposure to extreme temperatures in workplaces involves physical hazards for workers. A poorly acclimated worker may have lower performance and vigilance and may therefore be more exposed to accidents and injuries. Due to the incompatibility of the existing standards implemented in some workplaces and the lack of thermoregulation in many protective equipment, thermal stress remains one of the most frequent physical hazards in many work sectors. However, many of these problems can be overcome with the use of smart textile technologies that enable intelligent thermoregulation in personal protective equipment. Smart textiles can detect, react and adapt to many external stimuli. Interconnected sensors and actuators that interact and react to existing risks can provide the wearer with increased safety, protection and comfort. Thus, the skills of smart protective equipment can contribute to the reduction of errors and the number and severity of accidents in the workplace, and thus promote improved performance, efficiency and productivity.This review provides an overview and opinions of authors on the current state of knowledge on these types of technologies by reviewing and discussing the state of the art of commercially available systems and the advances made in previous research works.

show abstract

“…Heat stress is an important factor that should be considered in physically demanding occupations. Heat stress is generally influenced by many factors, such as heavy workload, use of personal protective equipment (PPE), and environmental factors (e.g., sun exposures, heat, humidity), and is of major concern among workers with physically demanding occupations [ 1 , 2 , 3 , 4 ]. Next to metabolic heat production from the physical work, the two main factors influencing heat stress are the environmental conditions and use of personal protective clothing (PPC) and PPE [ 1 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Working in hot (sunny and humid) environments causes the body temperature to increase as a result of the inhibition of body heat loss [ 1 , 3 , 4 , 6 , 7 , 8 ]. Wearing full-body PPC and PPE hinders heat removal and so stimulates and increases heat stress as a result of thermal insulation and evaporative resistance [ 1 , 2 , 9 , 10 ]. Both heat stress and the strain resulting from it are influenced by individual factors [ 7 , 11 , 12 ], such as age, health, and fitness level [ 9 , 13 ], and may lead to subsequent health problems, such as exhaustion, dehydration, mental confusion, and loss of consciousness [ 8 , 10 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Wearable Non-Invasive Thermometer for Monitoring Ear Canal Temperature during Physically Demanding (Outdoor) Work

Roossien

Hodselmans

Heus

et al. 2021

IJERPH

View full text Add to dashboard Cite

Aimed at preventing heat strain, health problems, and absenteeism among workers with physically demanding occupations, a continuous, accurate, non-invasive measuring system may help such workers monitor their body (core) temperature. The aim of this study is to evaluate the accuracy and explore the usability of the wearable non-invasive Cosinuss° °Temp thermometer. Ear canal temperature was monitored in 49 workers in real-life working conditions. After individual correction, the results of the laboratory and field study revealed high correlations compared to ear canal infrared thermometry for hospital use. After performance of the real-life working tasks, this correlation was found to be moderate. It was also observed that the ambient environmental outdoor conditions and personal protective clothing influenced the accuracy and resulted in unrealistic ear canal temperature outliers. It was found that the Cosinuss° °Temp thermometer did not result in significant interference during work. Therefore, it was concluded that, without a correction factor, the Cosinuss° °Temp thermometer is inaccurate. Nevertheless, with a correction factor, the reliability of this wearable ear canal thermometer was confirmed at rest, but not in outdoor working conditions or while wearing a helmet or hearing protection equipment.

show abstract

Performance enhancement of hybrid personal cooling clothing in a hot environment: PCM cooling energy management with additional insulation

Cited by 37 publications

References 30 publications

Emerging Materials and Strategies for Personal Thermal Management

Emerging Materials and Strategies for Personal Thermal Management

Advanced Functional Materials for Intelligent Thermoregulation in Personal Protective Equipment

Evaluation of a Wearable Non-Invasive Thermometer for Monitoring Ear Canal Temperature during Physically Demanding (Outdoor) Work

Contact Info

Product

Resources

About