A novel personal cooling system (PCS) incorporated with phase change materials (PCMs) and ventilation fans: An investigation on its cooling efficiency

Lu, Yehu; Wei, Fanru; Lai, Dandan; Shi, Wen; Wang, Faming; Gao, Chuansi; Song, Guowen

doi:10.1016/j.jtherbio.2015.07.002

Cited by 84 publications

(50 citation statements)

References 41 publications

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“…The working hours for outdoor workers are about 8 h. It is necessary to exchange batteries for FANS and cooling bags for VEST. Lu et al (2015) evaluated a newly developed cooling device with cooling bags and cooling fans. There were two fans for upper body and two fans for lower body.…”

Section: Discussionmentioning

confidence: 99%

“…The duration time depends on the mass of phase change materials and also depends on phase change materials itself which have different melting temperatures. Lu et al (2015) defined "cooling power" as the increase of heat loss from the steady state condition. This study uses the term as the increment of heat loss from the beginning.…”

Section: Discussionmentioning

confidence: 99%

“…It concluded that neither the ventilation location nor the opening design had significant differences in total torso cooling. Lu et al (2015) conducted the experiment of the combined cooling effects by PCMs and fans with a sweating manikin. The environment condition were hot and humid (34 °C and RH 75%) and hot and dry (34 °C and RH 28%).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of two cooling devices for construction workers by a thermal manikin

2017

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Two kinds of wearable cooling devices were evaluated for their cooling effect by a thermal manikin. All measurements were conducted in a climatic chamber. The cooling fans worked almost 3 h. Their cooling effect was large at the head and had little effects on other parts of the manikin. They decreased the insulation of a typical clothing ensemble of outdoor workers in construction industries from 0.75 clo to 0.48 clo. The cooling vest for heat protective clothing mainly worked on the trunk. It did not have enough effect nor had steady cooling effect. But the vest worked as direct cooling device for the trunk. The effect of the fans to Standard Effective Temperature (SET) is evaluated by simulation. The difference of SETs between the case of the typical ensemble and the case with the cooling fans at 35 °C of the surrounding environment is 2.6 °C. The lower the surrounding temperature is, the larger the difference between SETs of different clothing insulation value is.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of two cooling devices for construction workers by a thermal manikin

2017

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“…Its total weight was of 3.6 kg. They concluded that this hybrid cooling uniform provides a continuous cooling effect during the three-hour test and the average cooling rate for the whole body is around 111 W and 315 W in "hot and humid" and in "hot and dry" conditions respectively [44].…”

Section: Hybrid Cooling Garmentsmentioning

confidence: 99%

“…Hybrid garments appear to be more efficient than the traditional garments that operate using a single technology [21] [42] [44]. The effective cooling duration of a hybrid garment will correspond to the lowest cooling duration of its incorporated techniques.…”

Section: Advantages and Disadvantages Of The Cooling Garments And Tecmentioning

confidence: 99%

Towards Optimizing a Personal Cooling Garment for Hot and Humid Deep Mining Conditions

Sayed¹,

Vinches²,

Hallé³

2016

OJOp

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Workers exposed to hot and humid conditions suffer from heat stress that affects their concentration and can potentially lead to an increase in workplace accidents. To minimize heat stress, protective equipment may be worn, such as personal cooling garments. This paper presents and discusses the performances, advantages and disadvantages of existing personal cooling garments, namely air-cooled, liquid-cooled, phase change, hybrid, gas expansion and vacuum desiccant cooling garments, and a thermoelectric cooling technology. The main objective is to identify the cooling technique that would be most suitable for deep mining workers. It appears that no cooling technology currently on the market is perfectly compatible with this type of mining environment. However, combining two or more cooling technologies into a single hybrid system could be the solution to an optimized cooling garment for deep mines.

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Thermo‐Haptic Materials and Devices for Wearable Virtual and Augmented Reality

Lee

Kim

Sul

et al. 2020

Adv Funct Materials

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The current generation of virtual and augmented realities (VR/AR) has substantially advanced in the past decade because of the rapid development of converging technologies in various engineering and scientific fields. However, the current VR/AR technologies rely mainly on visual and auditory senses to physically replicate the virtual environment, although tactile senses play a significant role in the daily life since a myriad of tactile information is received through physical touch. Of the tactile senses, thermal senses are of great importance to be reproduced in the VR/AR field, since heat is transferred constantly and further interact with the surrounding environment. To date, there has been a huge amount of research studies on functional materials, thermo‐haptic devices, and wearable electronics that have all converged to form the fundamental groundwork for the development of wearable thermal VR/AR devices. In this progress report, a review on various physical mechanisms and research is provided that can potentially be applied in the next generation of thermal VR/AR technologies and discuss the essential challenges that need to be addressed.

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A novel personal cooling system (PCS) incorporated with phase change materials (PCMs) and ventilation fans: An investigation on its cooling efficiency

Cited by 84 publications

References 41 publications

Evaluation of two cooling devices for construction workers by a thermal manikin

Evaluation of two cooling devices for construction workers by a thermal manikin

Towards Optimizing a Personal Cooling Garment for Hot and Humid Deep Mining Conditions

Thermo‐Haptic Materials and Devices for Wearable Virtual and Augmented Reality

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