• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.6 s.165
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• pp.966-973
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• 2007

The purpose of this study was to examine the correlation between the combination of women's clothing by season and thermal insulation using a thermal manikin. A total of 34 kinds of clothing ensembles were selected based on previous studies(8 types for spring/fall, 7 types for summer, and 19 types for winter). The results were as follows: The thermal insulation of clothing ensembles($I_{cle-total}$) ranged from $0.34{\sim}0.60clo$ for spring/fall, $0.16{\sim}0.37clo$ for summer, and $0.89{\sim}1.35clo$ for winter. The correlation coefficient between the thermal insulation of clothing ensembles and thermal insulation accumulated by the individual garments composing of the clothing ensembles($I_{cle-summed}$) was 0.982(p<0.001). The correlation coefficient between the thermal insulation of clothing ensembles and total clothing layers for the upper body part was 0.750 (p<0.001), for the total clothing weight was 0.978(p<0.001), and for the covering area was 0.776(p<0.001). In conclusion, $I_{cle-total}$ showed higher relationships to the $I_{cle-summed}$ and total clothing weight than to the total clothing layers or surface area covered by clothing.

• Journal of Bio-Environment Control
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• v.13 no.4
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• pp.251-257
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• 2004

This experiment was carried out to investigate the effects of different covering materials and methods on heat insulation of a plastic greenhouse, growth and yield of tomato. Night air and soil temperatures in a double-layer greenhouse with external multifold thermal cover (MTC; eight-ounce cassimere+four-fold polyform+double-fold non-woven fabric+single-fold polypropylene covering were about $1^{\circ}C$ lower than in that with internal MTC covering, but about $3^{\circ}C$ higher than in that with an EVA film screen. Tomato yield in the external MTC covering increased by $2\%\;and\;19\%$ as compared to that in the internal MTC covering and the non-covering of MTC, respectively, due to its high light transmission and insulation effect. Night air temperatures in a double-layer greenhouse with external MTC covering and with thermal screen (polyester plus aluminium) were $2.2^{\circ}C\;and\;4.5^{\circ}C$ higher than those in a double-layer greenhouse with an external MTC covering and in a double-layer greenhouse equipped an EVA film screen, respectively. Tomato yield in the treatment with external MTC covering and a thermal screen was $18\%\;and\;37\%$ greater than that in the external MTC covering and in an EVA film screen, respectively. Results indicate that tomato could be grown without heating or with minimal heating in a double-layer greenhouse covered with MTC and a thermal screen during the winter season in sourthern regions of Korea.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.255-260
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• 2002

일반적으로 온실의 효과적인 온도관리를 위해서는 단열효과가 우수한 보온재를 이용하거나 또는 난방공간의 체적을 최소화 할 수 있는 터널재배가 바람직하다. 지금까지는 딸기, 수박 등 키가 작은 작물에 한하여 보온터널재배가 이루어지고 있는 실정이나, 보온터널의 개폐를 인력에 의존하고 있기 때문에 노동력이 많이 들고, 개폐에 소요되는 시간도 상당한 비중을 차지하고 있다. (중략)

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.8
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• pp.1098-1109
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• 1999

This study was to examine the effects of textiles materials and wearing types on the thermal regulation responses of human, Cotton polyester wool silk and rayon were chosen as outerwears and acetate was selected as a lining. Blouse-skirt suits blouse-slacks suits and one-piece dress made of selected textiles were examined by human trials, Tests results were as follows ; 1 When subjects wore vlouse-slacks suits Tmsk was showed the highest value. There was a significant difference on Tmsk(p<0.05) when they wore one-piece dress. The temperature of microclimate inside clothing when subjects wore blouse-slacks suits showed the highest value and one-piece dress and then blouse-skirt suits in order. For blouse-skirt suits clothing without lining showed higher temperature of the back of microclimate inside clothing than clothing with lining except cotton(p<0.1) 2. There were no significant consistency of the increasing rates of thermal insulation of garment at fabric test and human trials among polyesterand silk.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.16 no.3
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• pp.243-247
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• 1987

• Journal of the Korean Society of Clothing and Textiles
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• v.39 no.1
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• pp.55-62
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• 2015

This study investigated the thermal insulation of an air-cell pack embedded jacket and down jackets to understand the potential of air-cell pack as a filler for winter outdoor wear. A thermal manikin measured the thermal insulation of the following jackets: HD (heavy down jacket, total weight (Tw) 750g, goose down weight (Dw) 350g), LD (light down jacket, Tw 560g, Dw 140g), AF (air-cell pack embedded jacket, Tw 490g, trunk goose down in LD was replaced to air cell), F (film jacket, Tw 469g, but removed the air in the air-cell pack from the AF), and Control (control jacket, Tw 438g, removed the air-cell pack film from the F). Thermal insulations of each experimental condition were measured in a static standing posture. Total thermal insulations (IT) were 1.29clo (HD), 1.23clo (LD), 1.16clo (AF), 1.20clo (F), and 1.08clo (Control). Body regional thermal insulation was higher in the chest and back than in the abdomen and hip in all conditions. The results suggest that an economical and versatile outdoor jacket with superior thermal insulation will be feasible if the air volume is properly controlled in air-cell pack embedded jackets in consideration of regional different distribution and used in combination with film and down.

• Fashion & Textile Research Journal
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• v.23 no.2
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• pp.261-272
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• 2021

The purpose of the present study was to evaluate the thermal insulation of air-filled winter jackets according to the amount of air-filler using a thermal manikin. The insulation of these jackets' was compared to a down padded jacket with an identical design and size. The amounts of air-filler were 100% (26,219 cm³), 70% (18,645 cm³), 50% (13,110 cm³), and 0% (0 cm³). The results showed that a clothing insulation (Icl) of 0%, 50%, 70%, and 100% air, and 100% down jackets was 0.208, 0.243, 0.207, 0.176, and 0.315 clo, respectively. In addition, the down jacket with waisttaped had a clothing insulation of 0.369 clo. However, the highest value of clothing insulation per clothing weight was the 50% air-filled jacket in all conditions. In terms of regional power consumption of the thermal manikin, the down jacket consumed less power for the shoulder and chest than the air-filled jackets. In conclusion, in order to maximize the thermal insulation of air-filled jackets, an optimal amount of air-filler, that is, an amount which does not compromise (break) the layer of inner air between the surface of manikin and the lining of the jacket, should be explored. Further studies on lining materials, end-closed design, and changes in thermal insulation under the conditions of strong wind or heavy snow are recommended.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.05a
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• pp.16-21
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• 1998

우리나라는 시설재배 난방용 에너지로 경유를 90%이상 사용하고 있는데 최근 급격한 유가의 상승으로 생산비중 난방비가 차지하는 비중이 20∼25%에서 30∼40%로 높아져 시설원예 농가의 경제성이 크게 악화되고 있다. 이를 극복하고 안정적인 생산을 계속하기 위하여 보온력 향상이나 자연에너지 이용 기술에 관한 지속적인 기술개발과 보급이 필요할 것으로 생각된다. (중략)

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.208-212
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• 2000

The effect of heat covering materials during cultivation of Shigyoku grape was examined on the effect of protection from freezing damage, labor reduction, and disease resistance during the wintering. This experimentwas accomplished using different combination of heat covering materials from the end of Nov as follows: straw and heat conservation cover B, kilding, color fabric A, and white needle punching fabric. Capacity of heat conservation was the least form white needle punching fabric, and the differences of other materials was slight. Early sprouting occurred by the treatment with heat conservation cover B, and the rate of sprouting was about 70.7% after 9 days of sprouting, showing 2.3-12.5% increase. Growth effect was not differ between heat conservation materials. Disease and insects occurred by the in dice 3.0-3.2 of crown gall from the heat conservation cover B treatment. Other damages were not observed or very little from other treatments. Demand of labor during steps of these treatments was more observed by 6% for kilding than heat conservation cover B, and those of color fabric A and white needle punching fabric were reduced by 6 and 15%, respectively.

• Journal of the Korean Society of Clothing and Textiles
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• v.17 no.2
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• pp.301-306
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• 1993

Since the underquilt has an important role of supporting the human body in sleeping, it needs to sustain ample degrees of hardness, elasticity, humidity absorption, and warmth retention property and also to have the two ergonimical requirements : It should not be too soft to allow human bodies to sink in, and that it should be comfortable for humans to tum over in sleeping. This study aims to investigate the effect of the thermal insulation of the variation in weight applied to the underquilt. For this purpose, six items were selected as filling materials for the underquilt : cotton, wool, silk, down, polyester, cotton/ployester. Various weights were applied to each of the underquilts to survey the reduction tendency of its thermal insulation effect. The results are as follow : 1. The Thermal insulation effect of each underquilt decreased in an exponetial function as the weight on the underquilt was increased. 2. The thermal reduction curves according to the load weight insrease were shown to be constant in shape regardless of the weight increase. 3. At the weight of more than $25kg/m^2$ the degree of the thermal insulation effect of each underquilt was found to be in order of down>cotton>silk>polyester>wool>cotton/ployester. 4. The variation in load weight applied to each underquilt was shown to be in reverse correlation with the thermal insulation effect. An estimated regression formula can be made on the data.