Effects of liquid cooling garment on physiological and psychological strain of firefighter in hot and warm environments

Yang, Jie; Zhang, Yiwen; Huang, Yiming; Chen, Weiwang

doi:10.1016/j.jtherbio.2023.103487

Cited by 14 publications

(3 citation statements)

References 40 publications

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“…The reason for this is that the subjects sat still and did office work during the experiment without strenuous exercise; thus, the effect on the core temperature was not significant. This was also detected in the studies of Li et al [40] and Yang et al [41], in which the authors found that exercise intensity had a great effect on the core and skin temperatures.…”

Section: Effect Of Liquid-air Hybrid Cooling On Cooling Performancesupporting

confidence: 68%

Design of Liquid–Air Hybrid Cooling Garment and Its Effect on Local Thermal Comfort

Wang,

Zhao

2023

Applied Sciences

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Personal cooling garments were reported effective in improving thermal comfort in hot environments. In this study, three liquid–air hybrid cooling garments and one control garment were designed and made: aluminum-tube fan cooling (AAL), silicone-tube fan cooling (SAL), silicone-tube fan cooling with inner yarn fabric (YAL), and a control garment (CON) without the cooling sources. Subject trials were performed by eight female subjects in a climate chamber to simulate a summer indoor working environment at 32 °C and 50% relative humidity. The results showed that the liquid–air hybrid cooling garment provided effective convective and conductive heat dissipation compared with the no-cooling (CON) stat, chest, belly, shoulder, back, hand, thigh, and calf. The horizontal e, resulting in a decrease in local body skin temperature. Compared with the CON, the liquid–air cooling garment resulted in a maximum reduction of 1 °C for the mean torso skin temperature and 1.5 °C for the localized shoulder skin temperature. The AAL had a better cooling effect on the torso skin temperature compared with the SAL, and the cooling of the AAL was 0.5 °C lower than that of the SAL for the shoulder skin temperature. The presented liquid–air hybrid cooling garments were effective in cooling the body and improving thermal comfort. They were portable, accessible, and sustainable in hot indoor environments compared with air conditioners. Therefore, they could save energy.

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Section: Effect Of Liquid-air Hybrid Cooling On Cooling Performancesupporting

confidence: 68%

Design of Liquid–Air Hybrid Cooling Garment and Its Effect on Local Thermal Comfort

Wang,

Zhao

2023

Applied Sciences

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“…First, many of the current liquid-cooling clothing's cooling units are complicated, with some employing compressors to cool the refrigerant, adding excess weight to the system and being inconvenient for personnel to carry [27]. Second, the majority of liquid-cooling clothing is tailored for specific environments, making them unsuitable for general workplaces [28]. Third, scholars have utilized metal materials to construct piped systems for liquid-cooling clothing [29].…”

Section: Thermal Convection Wearable Clothingmentioning

confidence: 99%

Personal Wearable Thermal and Moisture Management Clothing: A Review on Its Recent Trends and Performance Evaluation Methods

Zhou,

Zhao,

Guo

et al. 2023

Processes

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Personal wearable systems designed to manage temperature and moisture are gaining popularity due to their potential to enhance human thermal comfort, safety, and energy efficiency, particularly in light of climate change and energy shortages. This article presents the mechanisms of thermal and moisture management, recent advances in wearable systems for human thermal and moisture management, and methods for their performance evaluation. It evaluates the pros and cons of various systems. The study finds that most wearable systems for thermal and moisture management are being examined as individual topics. However, human heat and moisture management have noteworthy interactions and impacts on human thermal comfort. There are certain limitations in the methods used for evaluating personal heat and moisture management in wearable systems. This review suggests future research directions for wearable systems to advance this field and overcome these limitations.

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“…To alleviate heat stress caused by PPE, personal cooling garments were developed to enhance heat loss and improve thermal comfort by regulating body temperature and reducing physiological stress. Several studies have evaluated the effects of existing personal cooling garments used with PPE, including PCM/ice vests [8][9][10], liquid cooling garments [11][12][13][14], and ventilation cooling systems [15,16], all of which demonstrated significant improvements in thermal comfort. However, PCM/ice vests and liquid cooling garments have limitations in operating time [17,18], and both of these cooling methods can cause skin wetness, which affects skin wetness comfort [19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Wearable Cooling and Dehumidifying System Used under Personal Protective Clothing through Human Subject Testing

Zhou,

Lou,

Fan

2024

Processes

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Healthcare professionals wearing personal protective equipment (PPE) during outbreaks often experience heat strain and discomfort, which can negatively impact their work performance and well-being. This study aimed to evaluate the physiological and psychological effects of a newly designed wearable cooling and dehumidifying system (WCDS) on healthcare workers wearing PPE via a 60 min treadmill walking test. Core temperature, mean skin temperature, heart rate, and subjective assessments of thermal sensation, wetness sensation, and thermal comfort were measured throughout the test. Additionally, ratings of wearing comfort and movement comfort were recorded during a wearing trial. The results showed that the WCDS significantly reduced core temperature, improved thermal sensation, and reduced wetness sensation compared to the non-cooling condition. The microclimatic temperature within the PPE was significantly lower in the cooling condition, indicating the WCDS’s ability to reduce heat buildup. The wearing trial results demonstrated general satisfaction with the wearability and comfort of the WCDS across various postures. These findings contribute to the development of enhanced PPE designs and the improvement in working conditions for healthcare professionals on the frontlines during outbreaks.

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Effects of liquid cooling garment on physiological and psychological strain of firefighter in hot and warm environments

Cited by 14 publications

References 40 publications

Design of Liquid–Air Hybrid Cooling Garment and Its Effect on Local Thermal Comfort

Design of Liquid–Air Hybrid Cooling Garment and Its Effect on Local Thermal Comfort

Personal Wearable Thermal and Moisture Management Clothing: A Review on Its Recent Trends and Performance Evaluation Methods

Assessment of Wearable Cooling and Dehumidifying System Used under Personal Protective Clothing through Human Subject Testing

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