• 월간 기계설비
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• s.36
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• pp.105-105
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• 1993

• The Korea Swine Journal
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• v.16 no.11 s.183
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• pp.100-104
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• 1994

• 종축개량
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• v.21 no.1
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• pp.82-86
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• 1999

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.5906-5913
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• 2015

This paper analyzes the effect of adoption and complementarity of production technology bundles in horticultural greenhouse - more than 10m vinyl greenhouse ($T_1$), polyolefin film ($T_2$), winding branch ventilation ($T_3$), and more than 15 ounce lagging cover ($T_4$). The results are as follows: First, only using $T_1$, only using $T_2$, only using $T_3$, only using $T_4$, using $T_1$ and $T_3$, and using $T_1$ and $T_4$, have a higher net return. Second, when $T_3$ is used, $T_1$ and $T_2$ are complementary. Third, $T_1$ and $T_3$ are always complementary. Fourth, when $T_2$ and $T_3$ are not used, $T_1$ and $T_4$ are complementary. The results of this paper could contribute to government's technology diffusion policies and subsequent studies.

• 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)

• Horticultural Science & Technology
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• v.16 no.4
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• pp.517-519
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• 1998

This experiment was carried out to find out the effects of heat conservation materials (burying in soil, lagging, lagging +straw, nonwoven fabric, nonwoven fabric+straw) on freezing damage, labor saving, and crown gall occurrence of 'Kyoho' grapes. Temperature differences in burying in soil and lagging with $2.8^{\circ}C$ and $6.4^{\circ}C$, respectively and were considered favorable for over-wintering of grapevines. Heat conservation index in lagging +straw and burying in soil calculated from degree-hours below $-10^{\circ}C$ was 5 to 7 times higher than that of open field. Budbreak started earlier in lagging with+straw and nonwoven fabric+straw covering, and percent budbreak was increased by 22% and 7%, respectively, as well as higher than burying in soil. Diameter of bearing mother branch and length of internode and daughter branch were gross or long with soil and lagging straw and nonwoven fabric+straw. Cane growth was enhanced by burying in soil and lagging with+straw treatment. Crown gall occured higher in soil covered grape vines Labor saving was obtained in lagging with as much as 44% compared to burying in soil.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.04a
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• pp.87-91
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• 1999

봄철 하우스 수박 무가온 조숙재배에 알맞는 보온방법을 개발하고자 아취형 단동하우스에 PE필름터널, 유공필름＋축열물주머니, 유공필름터널＋부직포터널구를 처리하고, 삼복꿀수박을 '98년 3월 23일 정식하여 4월 27일까지 36일간 터널피복재의 보온성을 검토한 결과는 다음과 같다. (1) 보온재 피복 재배 기간중 터널내 최저온도는 PE터널구 10.9$^{\circ}C$에 비하여 유공필름터널에 축열물주머니구와 부직포터널구는 각각 0.9, 2.1$^{\circ}C$ 높았다. (2) 3월하순 활착기의 하우스내 일사량은 실외 175.2w/$m^2$ 비하여 124.2w/$m^2$로 51w/$m^2$ 낮았다. (3) 터널피복재 환기작업에 따른 소요 노동력은 PE터널구 25.2시간/10a/36일에 비하여 유공필름터널＋부직포터널구는 32.4시간으로 7.2시간/10a/36일 증가하였으나, 유공필름터널＋축열물주머니는 개폐작업으로 인한 투하 노동력이 없었다. (4) 터널재배 기간중 유공필름터널＋부직포터널구가 초기생육이 촉진되었으며, 생육후기에 발생한 흰가루병 이병엽율은 2.8%로 현저히 감소하였다. (5) 수박의 수확기는 PE필름터널구 6월 22일에 비하여 유공필름터널＋축열물주머니와 부직포터널구는 6월 12, 15일로 7, 10일 앞당겼으며, 수량은 PE터널구 2,385kg/10a에 비하여 20, 32% 각각 증수하였다.

• Journal of Bio-Environment Control
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• v.14 no.1
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• pp.22-28
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• 2005

The use of blankets to preserve heat in oriental melon cultivation is a common practise without artificial heating and warming systems. Efficiency of blanket decreased with annually usage. This experiment was conducted to investigate the effect of double layer nonwoven fabrics on heat conservation, plant growth, fruit quality and yield of oriental melon in greenhouse. The results were compared among the non-woven fabrics of 9+3, 6+6, 6+3 and 12 ounce from transplanting to April 20, 2001, 2002. Night temperature within tunnel was high at 9+3, 6+6, 6+3 and 12 ounce in order. In plant growth, stem length, leaf numbers and exudate, under double layer nonwoven fabrics were better than single layer blanket of 12 ounce especially, 9+3 double layer blanket was the best. Fruit weight, flesh thickness, soluble solid and marketable yield rate remained same in all treatments. Fermented fruit rate was the highest in 12 ounce as $32.9\%,\;19.6\%\;under\;9+3,\;17.1\%\;under\;6+6,\;16.6\%$ under 6+3 double layer nonwoven fabric, respectively. Compared to 2,260kg yield per 10a of 12 ounce single layer nonwoven fabrics, $7\%$ was increased under 9+3 but $3\%\;and\;13\%$ were decreased under 6+6 and 6+3 double layer nonwoven fabrics, respectively. Compared to income, 4,499-thousand-won per 10a, of 12 ounce single layer blanket, $13\%\;and\;3$ were increased under 9+3 and 6+6 double layer nonwoven fabrics, respectively. Whereas, $10\%$ decreased under 6+3 double layer nonwoven fabrics. From this results it is evident that 9+3 double layer nonwoven fabrics was the best for thermokeeping, fruit quality, and was most economic under non heating system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.590-596
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• 2020

The fabric used for military winter inner clothing(top) is quilted with padded cotton to provide warmth. This quilting fabric is generally manufactured with yarns that intersect and are sewn substantially between the fabric and cotton. Thus, it is impossible to separate the fabric and cotton once after the quilting fabric is manufactured, which can result in a significant loss of fabric and cotton when separated. In this study, after fabricating the quilting fabric, we investigated a method to stabilize change rate of thickness and increase the warmth keeping property through subsequent processing without damaging the fabric. A relatively method of passing the quilting fabric through a part of the cotton production facility was used generally, and the following results were obtained. This indicates that after the quilting fabric was manufactured, the warmth keeping property was improved through the subsequent processing steps, so that the change rate of thickness due to washing was stabilized.

• Journal of Bio-Environment Control
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• v.16 no.4
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• pp.284-290
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• 2007

Thermal insulation effectiveness of the aluminum insulator depending on the direction of its glossing face, number of layer and allocation position was investigated. Modules were assembled by the combination of the variables levels and experimented for the case of 100 W and 40 W heating in the modules. The temperatures in the modules with the aluminum insulator were higher than those of the modules with polyester curtains. For the modules with one layer aluminum insulator, the inside temperatures of the modules with the direction of the glossing face outward were higher than those of the modules of inward. For two layer of aluminum insulator, the directions of those glossing faces were recommended to be the same direction for higher thermal insulation effectiveness. For the modules without heating, the temperature difference between the modules were not significant. The black globe temperatures in the modules were changed with the similar tendencies with the dry bulb temperatures in the modules. Those of the black globes were higher than those of the dry bulb temperatures as a whole. It was more distinguished for the modules of inward direction.