• Title/Summary/Keyword: thermal manikin

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Dressing Poses in Relation to Clothing Thermal Insulation

  • Li, Jun;Zhang, Weiyuan;Liu, Yan
    • Fashion & Textile Research Journal
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    • v.4 no.6
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    • pp.544-549
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    • 2002
  • By the movable thermal manikin developed by China Dong Hua university, the laws of clothing thermal insulation influenced by dressing poses are studied. It is found that $I_a$ on nude thermal manikin has no relation to testing pose as a whole (notable level is 5%), while the change of testing pose influences $I_a$ value on parts of body obviously. The testing result $I_{cle}$ on clothed thermal manikin has relation to testing pose. The $I_{cle}$ value of the whole body in seated pose decreases 20 percent compared with that in standing pose (notable level is 1%). In view of heat transmission theory, the reasons are pointed out based on the knowledge of heat transmission.

Wear Comfort Evaluation on Water-vapor-permeable (WVP) Garments Using a Movable Sweating Thermal Manikin (발한써멀마네킨을 이용한 투습방수의류의 착용쾌적성 평가)

  • Kang, Inhyeng;Lee, Han Sup
    • Journal of the Korean Society of Clothing and Textiles
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    • v.37 no.8
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    • pp.1095-1106
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    • 2013
  • This study evaluated the wear comfort properties of water-vapor-permeable (WVP) garments using a movable sweating thermal manikin. Manikin tests were performed in a climatic chamber (temperature T=20, $35{\pm}0.5^{\circ}C$ and relative humidity $H=50{\pm}10%$) using seven sportswear outfits (a long sleeve shirts and a long pants) made with seven different WVP fabrics. Physiological responses of wear trials could be correlated with measurement parameters of the thermal manikin experiment; subsequently, a regression model that represented a final comfort sensation could be obtained. The regression model developed in this work is based on thermal manikin measurements; consequently, it provides an independent comfort sensation level in a relatively short time at a low cost while maintaining the reproducibility of results. It translates into more actual choices for sportswear manufacturers and sportswear consumers.

Effects of garment types on thermal insulation using a thermal manikin (의복 형태가 보온력에 미치는 영향;써멀 마네킹 착용 실험에 의한)

  • 손원교;백윤정
    • Journal of the Korean Society of Clothing and Textiles
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    • v.23 no.8
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    • pp.1110-1118
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    • 1999
  • This study was to examine the effects of garment types on thermal insulation using a thermal manikin. cotton polyester wool silk and rayon were selected as outer wears like a blouse a skirt slacks and one-piece for this study Acetate was chosen as a lining. Brief and upper innerwear with long sleeves(cotton) were also chosen as the innerwear. The results were as follows: 1. The thermal insulation of the garment of single layer was in proportion to the covering area of garment in all types of clothing. 2. On adding the innerwear or the lining or both the thermal insulation of the each garment of single layer were showed a different trends by garment types. The thermal manikin insulations of one-piece dress adding the innerwear was higher than those of blouse-skirt suits. The thermal insulation of one-piece dress adding the innerwear and lining was lower than those of blouse-skirt suits. 3. The increasing rates of thermal insulation of multi-layered garments had different value by garment types but garment made of rayon and silk were showed very high increasing rates of thermal insulation. 4. The increasing rates of the thermal insulation of one-piece dress added the lining the innerwear or both except polyester showed the highest value and then blouse-slacks suits' turn came ound Blouse-skirt suits had the lowest the increasing rates of thermal insualition value.

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Physiological Responses of Cold Protective Clothing with Different clo Value (보온력 차이에 따른 방한복 상의의 인체착의 생리반응)

  • Lee, Jung-Sug;Kim, Hee-Eun;Song, Min-Kyu
    • Fashion & Textile Research Journal
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    • v.10 no.5
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    • pp.683-689
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    • 2008
  • The purpose of this study was to investigate physiological responses such as rectal temperature, skin temperature, micro climate, sweat rate and subjective sensations using cold protective clothing with five different clo value. The clo value was measured by thermal manikin in windless condition. Healthy five 20's males volunteered as subjects for wearing trial experiment. The climate chamber was controlled at $50^{\circ}C$, 65% RH. The experiment consisted of repeated exercise and recovery periods. We found that the higher clo value has, the higher mean skin temperature, micro climate and sweat rate show. They felt warm and wet with higher insulation clothing. Thermal comfort increased in the last recovery period after exercise. There was significant difference between five cold protective clothing. In correlation analysis of clo value, it showed that correlation coefficient(r) values were more than 0.8. Therefore, in terms of clothing insulation, we found that correlation between thermal manikin experiment and wearing trial experiment was high. Clothing insulation could be variable according to many factors such as body movement, covering area, clothing gap, layering and design. Considering the body movement, we thought that insulation measurement need to carry out both thermal manikin experiment and wearing trial experiment.

Transient Heat Flux Evaluation of Underwear for Protective Clothing using Sweating Manikin (발한 마네킹을 이용한 보호복용 언더웨어의 동적(Transient) 열류량 평가)

  • Park, Hye-Jun;Kim, Hyun-Jung;Hong, Kyung-Hi
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.1
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    • pp.157-165
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    • 2008
  • Transient thermal response of five types of underwear(cotton jersey, wool jersey, nylon jersey, cotton mesh and polyester mesh) for a protective coverall is evaluated using a sweating thermal manikin. Experimental protocol for transient thermal response of the sweating thermal manikin was also proposed. As results, it was found that steady state thermal response from sweating thermal manikin was not sensitive enough to evaluate thermal comfort of the experimental garments. However, when half time is used as an index of the heat flux change in transient thermal response, difference was found among underwear materials. Half time of cotton was the shortest and heat transfer of cotton was the fastest followed by polyester mesh, cotton jersey, nylon jersey and wool jersey. Dynamic thermal response of wool underwear was quite different from that of cotton underwear. Wool shows quite less heat flow at the initial stage, however, moisture permeability of wool was higher than cotton at the later stage. It was difficult to distinguish surface temperature difference visually using thermogram taken right before the completion of dry and wet test in steady state thermal response.

Study on Thermal Insulation Property of Military Cold-Weather Clothing Using a Thermal Manikin (써멀마네킨을 이용한 군용 방한복의 보온성 평가에 관한 연구)

  • Jin, Yong Bum;Kim, Sungmin;Han, Hyun Jung;Sa, A Na;Park, Chang Kyu
    • Textile Science and Engineering
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    • v.55 no.1
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    • pp.48-55
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    • 2018
  • This paper proposes a novel test method for the evaluation of thermal insulation capability of military cold-weather clothing. A new evaluation method for thermal insulation using a thermal manikin was developed, and the thermal insulation capabilities of various materials were tested using the proposed method. The experiment was conducted under environmental conditions similar to that of actual military operations. The thermal insulation capability and specific mass were evaluated for 31 innerwear and 9 outerwear items. The criteria for selecting the optimal winter clothing was proposed through the statistical analysis of the results of the experiments.

Determining thermal comfort properties of coverall worn in the atomic power plant using a sweating thermal manikin and ISO 7730 (발한 Thermal manikin과 국제 표준 7730을 이용한 원자력 발전소 작업복의 열적 쾌적성 판별)

  • 홍성애
    • Journal of the Ergonomics Society of Korea
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    • v.15 no.1
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    • pp.91-103
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    • 1996
  • For determining thermal comfort properties of work suit in an atomic power plant, three different coverall ensembles (PVE, PET/Rayon, PP Nonwoven) were selected and the resistance to dry and evaporative heat transfer were measured for each ensemble by using a sweating thermal manikin. Also, PMV (Predicted Mean Vote) and PPD(Predicted Percentage of Dissatisfied) indices were predicted according to ISO 7730. As a result, ideal environmental conditions in an atomic power plant were suggested to make workers feel thermally comfortable. In addition, ideal intrinsic insulation values of coverall ensembles as a work suit under the present environmental conditions in the at6omic power plant were provided. The information given in this paper can be used to control environmental conditions in the atomic power plant thermally comfortable and to select a proper work suit for providing thermal comfort to the workers.

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The Effects of Textiles for Thermal Insulation Value Using a Thermal Manikin (써멀 마네킹 착용실험에 의한 보온력에 미치는 의복소재의 영향)

  • Son Won-Kyo;Choi Jeong-Wha
    • Journal of the Korean Home Economics Association
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    • v.37 no.12
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    • pp.141-151
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    • 1999
  • This study was carried out to examine the effects of textile materials for thermal insulation value using a thermal manikin. Cotton, polyester, wool, silk and rayon were selected as outer wears like blouses, skirts, slacks, and one-pieces. Acetate was chosen as a lining. Brief and long sleeve upper underwear(cotton) were chosen as the inner wears. The results were as follows; There were no significant differences among the materials in skirts and blouse-skirt suits by the thermal manikin. However blouses, slacks, one-pieces and blouse-slacks suits were showed the effects of materials. Blouse-slacks suits was showed the highest thermal insulation value and one-piece had the lowest thermal insulation value.

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The Evaluation of Thermal Properties of Pesticide Protective Clothing using the Surface Temperature Controlled Thermal Manikin (열 마네킹을 이용한 부직포 농약 방호복의 열적 성능 평가)

  • Choi, Jong-Myoung
    • Korean Journal of Human Ecology
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    • v.7 no.1
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    • pp.119-127
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    • 1998
  • The purpose of this study was to evaluate thermal properties of pesticide protective clothing made of three different nonwoven fabrics which have barrier properties of pesticide. In order to assay the thermal properties of experimental clothing, thermal resistance measurements for clo value and thermographic assessment were conducted using a surface temperature controlled thermal manikin. The thermal manikin was dressed with underwear and experimental clothing. Air temperature in a climate chamber was kept at $28^{\circ}C$ and its humidity was 70% RH. Air velocity was controlled at less than 0.15m/s. Inner radient temperature was almost equal to the air temperature. The basic thermal insulation value(Icl) of underwear was 0.28 clo. The thermal properties of the experimental clothing were varied according to the type of material used in construction. The basic clothing insulation value for C1(spunbonded nonwoven fabric), C2(spunlaced nonwoven fabric), C3(SMS nonwoven fabric) were 0.705 clo, 0.725 clo, 0.738 clo respectively. The C3 experimental clothing made of SMS resulted in higher surface temperatures than the others with more yellowing spots being evident on the thermogram.

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Studies on the Thermal Insulation Effect of the Korean Women과s Folk Clothes (II) - Experiment by Thermal Manikin - (여자 한복의 열 차단효과에 관한 연구 (II) -Thermal Manikin에 의한 실험-)

  • 성수광
    • Textile Science and Engineering
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    • v.28 no.10
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    • pp.42-48
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    • 1991
  • This study is conducted to examine the thermal insulation effect(TIE) of the Korean women's folk clothes(KWFC) with various materials and various ambient temperatures, by means of thermal manikin with changeable one's posture in which the thermal properties include the clo value and regional thermal resistance. As a result, the clo value of the KWFC showed that one for summer was 0.66-0.77% while one for spring and autumn was 1.06∼1.10%. The thermal resistance in wearing the KWFC at sitting posture showed larger than a standing posture, giving the value which is lower than in the thermal resistance change by its posture. The TIE of KWFC was affected by the amount of air inside the more than materials for the clothes itself, and it is outstanding that TIE of the KnC was bigger than TIE of the Western style men's clothes at under parts of the body, owing to air layer. It is the reason that the KmC has a hi여or clo value than the Western style men's clothes. And, the relation between the weight per unit area and clo value of the KWFC showed a high degree of positive correlation.