The Effect of Bellows Action on Heat Transfer in Clothing System. Part 1. The Effect of Size of Air Space and Air Permeability of Clothing.

弥生, 薩本; 海華, 王; ヤエ, 長谷部; 欣造, 石川; 正顯, 竹内

doi:10.2115/fiber.56.524

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…The previous study of our laboratory (Satsumoto et al, 2000(Satsumoto et al, , 2003 [ [1][2][3] demonstrated that the narrower the space between foot and shoe, the higher velocity of exchanged air. The velocity in microclimate was calculated by the theoretical analysis as shown in equation 1.…”

Section: Velocity Near the Opening Of Shoe Affected By Bellows Actionmentioning

confidence: 99%

Effects of Shoe Fit and Moisture Permeability of a Leather Shoe on Shoe Microclimate and Air Exchange

Satsumoto¹,

Piao²

2016

J Ergonomics

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The purpose of this study was to investigate effects of shoe fit and moisture permeability of a leather shoe on shoe microclimate and air exchange Three kinds of leather shoe with different fit were compared, whose ball girth were tight fitted: 1E, medium fitted: 2E, loose fitted: 3E. It was also examined the effect of water vapor permeability of a leather shoe which would affect water vapor transfer in a shoe. We compared the artificial leather with the natural leather. Subject trials were carried out with above shoes in a climatic chamber under the condition of 30℃, 65％RH. The shoe microclimate of the foot and the velocity over the opening the shoe were measured. The subject walked on a tread-mill for 20 minutes after 10 minutes' rest and repeated twice. The experimental results showed that the absolute humidity in a shoe microclimate of the natural leather was lower than one of artificial leather at all part of a foot. It indicated that the water vapor transfer of the natural leather was larger than the artificial leather. The smaller the ball girth of shoe was, the larger the magnitudes of velocity near the opening, especially at the arch of the foot. The decrease of absolute humidity during walking in the arch was larger for tight fitted 1E than for the medium fitted 2E. It seemed the bellows action during walking. This fit effect was supported by our earlier study of the bellows action [1-3].

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Section: Velocity Near the Opening Of Shoe Affected By Bellows Actionmentioning

confidence: 99%

Effects of Shoe Fit and Moisture Permeability of a Leather Shoe on Shoe Microclimate and Air Exchange

Satsumoto¹,

Piao²

2016

J Ergonomics

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“…Chu and Nakajima (1997) investigated the effects of environmental temperature and the position of the opening on the clothing on ventilation of a thermal manikin by the trace gas method. Satsumoto et al (2000) examined the effect of bellows action on heat transfer in the clothing system by using a device that consisted of a simulated skin and a clothing material plate. Satsumoto and Havenith (2010) developed a device to evaluate the distribution of ventilation in diapers and investigated the effect of the design and material factors of diapers on heat and water vapor transfer through ventilation.…”

Section: Introductionmentioning

confidence: 99%

Assessment of airflow and microclimate for the running wear jacket with slits using CFD simulation

Lim

Choi

Roh

et al. 2015

Fashion and Textiles

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This study was performed to estimate the exchange of air (ventilation) and temperature distribution in the cylinder that simulated human body. Simulation simplified the human body wearing the running wear jacket with slits. Slits were positioned at the shoulder, mid-back and lower-back. For the running wear jacket, non-air permeable material was assumed to eliminate the effect of porosity of the fabrics. Airflow and microclimate temperature were analyzed using computational fluid dynamics (CFD). The results showed that the air tended to rise and drift towards the slits. Air flown out through the slits was in the order of the lower-back slit > mid-back slit > shoulder slit. Discrepancy in the air flow rate at each slit was caused by the generation of ascending air currents according to slit positions. The direction of the air current depended on the microclimate temperature inside the jacket. These results indicate that the lower-back slit gives better air exchange effect which was in agreement with the clothing microclimate observed by human wear tests.

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“…They found that the ventilation was affected not only by the air permeability (one of the material factors of clothing) but also by design features like openings and the air gap size between skin and clothing. Satsumoto et al (2000Satsumoto et al ( , 2003Satsumoto et al ( , 2005 investigated the bellows action mechanism on heat transfer by using a simple model to simulate bellows action. They found that the narrower the air gap between skin and clothing, the larger the ventilation that occurs near openings because of bellows action.…”

Section: Introductionmentioning

confidence: 99%

“…Satsumoto et al [15][16][17] investigated the bellows action mechanism on heat transfer by using a simple model to simulate bellows action. They found that the narrower the air gap between skin and clothing, the larger the ventilation that occurs near openings because of bellows action.…”

mentioning

confidence: 99%

Evaluation of Overall and Local Ventilation in Diapers

Satsumoto

Havenith

2010

Textile Research Journal

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The Effect of Bellows Action on Heat Transfer in Clothing System. Part 1. The Effect of Size of Air Space and Air Permeability of Clothing.

Cited by 6 publications

References 1 publication

Effects of Shoe Fit and Moisture Permeability of a Leather Shoe on Shoe Microclimate and Air Exchange

Effects of Shoe Fit and Moisture Permeability of a Leather Shoe on Shoe Microclimate and Air Exchange

Assessment of airflow and microclimate for the running wear jacket with slits using CFD simulation

Evaluation of Overall and Local Ventilation in Diapers

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