Effect of Garment Design on Liquid Cooling Garments

Kayacan, Özlem; Kurbak, Arif

doi:10.1177/0040517509358800

Cited by 32 publications

(23 citation statements)

References 8 publications

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“…Active PTCS (aPTCS) enables personal thermoregulation with the aid of an external power source. Examples of aPTCS include ventilated air cooling and liquid circulated cooling garments, [75][76][77] resistive heating fabrics [78][79][80][81][82] This article is protected by copyright. All rights reserved.…”

Section: Personal Thermal Comfort Systemsmentioning

confidence: 99%

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

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Thermophysiological comfort in humans is sought universally but seldom achieved due to biological and physiological variances. Most people in developed parts of the world rely on central heating and cooling systems to achieve thermophysiological comfort which is highly energy-intensive, inefficient, and rarely satisfactory. A potential solution to this issue is a wearable personal thermal comfort system (PTCS) consisting of textile-based temperature and moisture sensors, that can sense the environment and physiology of the wearer, combined with thermal and moisture responsive actuators, and/or heating/cooling devices to provide an individualized thermal environment. Moving thermal regulation away from the built environment to the microclimate surrounding the human body with the use of textiles has the This article is protected by copyright. All rights reserved. 2 potential to provide personalized thermal comfort and energy savings. Such a system may employ thermal comfort models and leverage the Internet of Things (IoT) and machine learning (ML) to understand individuals' comfort requirements in the current environment. Herein, the current state of textile-based active and passive thermophysiological comfort systems/technologies is summarized, including their environmental impact, major thermal comfort models, and factors influencing comfort (such as heat and moisture transfer). Also, active and passive textile-based devices (sensors, actuators, and flexible heating/cooling devices) that may be incorporated into a textile-based wearable PTCS are comprehensively discussed with an emphasis on their advantages, limitations, and future prospects.

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Section: Personal Thermal Comfort Systemsmentioning

confidence: 99%

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

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“…And finally, several technologies provide active cooling through use portable air conditioning units or liquid cooling. [14][15][16][17][18] These systems not only consume power, but also tend to be prohibitively expensive.…”

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confidence: 99%

Infrared-Transparent Visible-Opaque Fabrics for Wearable Personal Thermal Management

et al. 2015

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Personal cooling technologies locally control the temperature of an individual rather than a large space, thus providing personal thermal comfort while supplementing cooling loads in thermally regulated environments. This can lead to significant energy and cost savings. In this study, a new approach to personal cooling was developed using an infrared-transparent visible-opaque fabric (ITVOF), which provides passive cooling via the transmission of thermal radiation emitted by the human body directly to the environment. Here, we present a conceptual framework to thermally and optically design an ITVOF. Using a heat transfer model, the fabric was found to require a minimum infrared (IR) transmittance of 0.644 and a maximum IR reflectance of 0.2 to ensure thermal comfort at ambient temperatures as high as 26.1 o C (79 o F). To meet these requirements, an ITVOF design was developed using synthetic polymer fibers with an intrinsically low IR absorptance. These fibers were then structured to minimize IR reflection via weak Rayleigh scattering while maintaining visible opaqueness via strong Mie scattering. For a fabric composed of parallel-aligned polyethylene fibers, numerical finite element simulations predict 1 μm diameter fibers bundled into 30 μm yarns can achieve a total hemispherical IR transmittance of 0.972, which is nearly perfectly transparent to mid-and far-IR radiation. The visible wavelength properties of the ITVOF are comparable to conventional textiles ensuring opaqueness to the human eye. By providing personal cooling in a form amenable to everyday use, ITVOF-based clothing offers a simple, low-cost solution to reduce energy consumption in HVAC systems. TOC Graphic

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“…This might be due to the short duration of 90-minute exposure of heat stress, which was not sufficient time to raise the core body temperature to a critical level. Liquid cooling garments have been reported to maintain the core body temperature within a safe range and reduce heat strain (Kayacan & Kurbak, 2010; D. E. Kim & LaBat, 2010).…”

Section: Discussionmentioning

confidence: 99%

Workplace Heat Exposure Management in Indian Construction Workers Using Cooling Garment

Ashtekar

Mishra

Kapadia

et al. 2018

Workplace Health Saf

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Construction workers are at high risk of heat-related illnesses during summer months in India. The personal cooling garment (PCG) is a microclimate assistive device that provides protection from heat stress. The applicability and efficacy of wearing PCG for the physiological and subjective responses were tested on 29 healthy construction workers at actual field worksites. During the test, the climatic conditions were 103.64 ± 38.3°F dry bulb temperature, 41.2 ± 13.4% relative humidity, and wet bulb globe temperature 91.43 ± 39.92°F. Mean weighted skin temperature was significantly lowered by 38.66 ± 33.98°F when wearing PCG as compared with wearing habitual clothing (HC), 32.36 ± 33.44°F (p < .05). Mean sweat loss was also significantly lower when wearing PCG: 0.365 ± 0.257 kg as compared with wearing HC: 0.658 ± 0.342 kg (p < .05). Heart rate, along with back and chest skin temperatures were significantly reduced with wearing PCG. The present study suggests that PCG provides an affordable way of alleviating the discomfort and physiological strain caused by environmental heat exposure.

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Effect of Garment Design on Liquid Cooling Garments

Cited by 32 publications

References 8 publications

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Infrared-Transparent Visible-Opaque Fabrics for Wearable Personal Thermal Management

Workplace Heat Exposure Management in Indian Construction Workers Using Cooling Garment

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