Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (11): 148-153.doi: 10.13475/j.fzxb.20211007606

• Apparel Engineering • Previous Articles     Next Articles

Applicability analysis and calculation of clothing area factor in down jacket clothing ensembles

ZHANG Wenhuan1, JIANG Shu1, LI Jun1,2()   

  1. 1. College of Fashion and Design, Donghua University, Shanghai 200051, China
    2. Key Laboratory of Clothing Design and Technology, Ministry of Education, Donghua University, Shanghai 200051, China
  • Received:2021-10-29 Revised:2022-08-08 Online:2022-11-15 Published:2022-12-26
  • Contact: LI Jun E-mail:lijun@dhu.edu.cn

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Abstract:

In order to effectively evaluate the thermal and moist comfort of down clothing ensembles and accurately obtain clothing area factor, naked and clothed human bodies with 12 sets of down clothing systems were scanned by 3-D body scanner. Using Pearson analysis method, the correlational relationship between area factor and clothing design parameters (total filling of down, clothing length) and clothing thermal physical properties (intrinsic and total thermal insulation) were analyzed and the regression equations were established based on each influencing factor. The applicability of the area factor and the calculation method were discussed for down clothing systems using the predicted method for inherent thermal insulation and total thermal insulation. The results indicates that there is significant correlation between the total filling of down and the area factor, and that the effectiveness of length depends on down filling amount. Compared with the method of predicting the area factor of the inherent thermal insulation, the predicted values with total thermal insulation are more accurate.

Key words: clothing area factor, down jacket, inherent thermal insulation, total thermal insulation, 3-D scan

CLC Number: 

  • TS941.73

Tab.1

Specific parameters of down jacket clothing"

服装编号 总充绒量/
g		 单位面积充绒量/
(g·m2)		 长度/
m
ES 1 157 135 0.70
ES 2 180 135 0.85
ES 3 146 120 0.79
ES 4 199 135 0.97
ES 5 177 135 0.84
ES 6 182 135 0.85
ES 7 216 135 1.08
ES 8 164 115 0.94
ES 9 274 180 0.92
ES 10 234 135 1.20
ES 11 211 135 1.05
ES 12 291 180 1.06

Tab.2

Correlation coefficient of standardized prediction method of fcl"

标准编号 a b
ISO 11079—2007/ISO 7933—2004 0.305 1.00
ISO 9920—2009 0.281 1.000
ISO 7730—2005 0.255 1.050

Tab.3

Measurement results of clothing total thermal insulation, basic thermal insulation and area factor"

服装编号 总热阻/clo 固有热阻/clo 面积因子
ES 1 1.59 1.22 1.15
ES 2 1.71 1.37 1.24
ES 3 1.79 1.45 1.24
ES 4 1.87 1.53 1.25
ES 5 1.95 1.61 1.26
ES 6 2.00 1.67 1.30
ES 7 2.00 1.67 1.29
ES 8 2.10 1.78 1.35
ES 9 2.11 1.81 1.43
ES 10 2.17 1.84 1.32
ES 11 2.26 1.93 1.30
ES 12 2.26 1.96 1.44

Tab.4

Pearson correlation results between garment structure parameters and fcl"

类别 长度 总充绒量
相关性 0.56 0.81
Sig.(2-tailed) 0.06 0.00

Fig.1

Quantitative relationship between garment structure parameters and area factor. (a) Relationship between total down content (Tdc) and clothing area factor (fcl); (b) Relationship between clothing length (L) and clothing area factor (fcl)"

Tab.5

Pearson correlation results between thermal insulation and fcl"

类别 固有热阻 总热阻
相关性 0.86 0.83
Sig.(2-tailed) 0.00 0.00

Fig.2

Measured values of fcl and predicted values of standard method. (a) Measured and precited fcl with various methods; (b) Relationship between Icl and fcl and relative deviation"

Fig.3

Measured and non-standardized predicted values of fcl"

Tab.6

RRMSE and Rbias of non-standardized prediction method"

预测模型
名称		 均方根误差 乖离率
Icl方法 It方法 Icl方法 It方法
Patty 0.072 / -0.046 /
Subzero 0.102 0.068 -0.076 -0.034
Kuklane 0.299 0.058 -0.262 0.003
Zhang 0.049 0.055 0.002 0.003
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