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온수관과 송풍팬을 이용한 방울 토마토 부분 난방 기술 연구
문종필,강금춘,권진경,백이,이태석,오성식,진병옥 한국기계기술학회 2017 한국기계기술학회지 Vol.19 No.1
In this study, a hot water pipe and a blowing fan were combined for developing zone heating technology for cherry tomato. The concept of this system was that hot air was firstly made by hot water pipe in one layer plastic duct and then a blowing fan made the hot air formed in a duct discharge through a duct hole to a shoot apex or a flower cluster which was temperature-sensitive part of cherry tomato. This system mainly consisted of hot water boiler, thermal tank, heat radiation plastic duct with the function of moving up and down electrically depending on the height of shoot apex. Developed system was applied to the cherry tomato greenhouse located in Jangam Chungcheongnamdo from Dec. 28, 2015 to Feb. 16, 2016 and compared with conventional entire space heating system of cherry tomato greenhouse and looked into cumulative yield for the estimate of growing state and energy saving rate from the conventional consumed energy. The result showed that cumulative yield was 3% higher and consumed energy was 32% lower than those of control greenhouse. The average temperature of shoot apex zone was 0.4~1.1℃ higher and the average relative humidity of shoot apex zone was 2,2~2.3% lower than those of entire space during night time in a shoot apex zone heating greenhouse and the average temperature of shoot apex zone was 0.7~1.4℃ lower and the relative humidity of shoot apex zone was 2.9~8.3% higher than those of entire space during night time in a entire space heating greenhouse.
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문종필 한국어문교육연구회 2013 어문연구(語文硏究) Vol.41 No.1
This thesis focuses on bringing up the critical mind on Song-Wook’s assessment that the Korean history of literary is too much weighted toward the Western literature even if he attaches importance to his Ko- rean reasoning structure, not to the Western one. Through his essay, it is definitely sure that he had fiercely struggled to learn his by staring at the Korean literature on his own reasoning rather than the Western one. After he positioned on the center the Korean literature which is quite different from the Western literature, he surely gained the confidence on his own body that stress emphasis on the life and the traditional en- vironments or elements that exercise an influence on himself. He insists that the traditional elements never expire if any environments or elements are considered identical with his own body. Song-Wook considers his own mother-tongue as the combination of the idea inherent in the Chinese characters with Hangul, Korean alphabet, based on not the conception of “cogito” by René Descartes but the sensible language that emphasizes on respecting the life. His way of reasoning is the linguistic reasoning that puts a great value on the life based on the deep reasoning on his own body. His way of reasoning is surely quite different from the way of geometric, scientific and mathematical one. 이 글에서는 宋稶이 서구의 것이 아닌 내 것에 많은 비중을 두고 있음에도 불구하고 서구 문학과 이론에 지나치게 함몰되어 있다는 文學史의 평가에 대한 문제제기로부터 시작되었다. 산문을 통해 살펴 본 宋稶의 입장은 서구의 것에 지나치게 傾斜되기 보다는 내 것을 보다 정확히 알기위한 치열한 응시였다. 그가 서구의 것과 상이한 내 것을 중심에 위치에 놓은 후, 얻은 결과물은 生命을 중시하는 자신의 몸에 대한 확신과 자신에게 영향을 주는 전통의 요소였다. 나에게 영향을 주는 요소가 내 몸과 동일하게 간주될 때, 그것은 끊어지지 않고 연결되면서 이어지는 내 것인 母語의 운용과 연결되었다. 宋稶에게 있어 母語는 漢字에 담긴 思想과 우리말을 합친 言語의 운용이었고, 그것은 데카르트의 코키토 개념이 아닌 生命이 존중되는 感覺的인 言語였다. 또한 幾何學的이거나 科學的인 또는 數學的인 것과는 거리가 있는 내 몸에 대한 사유를 기반으로 한 生命의 가치를 지닌 言語的 사유였다.
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문종필 대한전기학회 2014 전기학회논문지 P Vol.63 No.4
In this paper, the effects of superconducting fault current limiter (SFCL) installed in power distributionsystem on reliability are evaluated and analyzed. The fault current will be decreased in power distribution system withSFCL because of the increased impedance of SFCL. The decreased fault current will improve the voltage drop of the busof substation. The voltage drop is an important factor of power distribution system reliability. In this paper, improvementof reliability worth is analyzed when SFCLs are installed at the starting point in power distribution system. First,resistor-type SFCL model is used in PSCAD/EMTDC. Next, typical power distribution system is modeled. Finally, whenthe SFCLs with impedance 0.5 [Ω] are installed in feeder, power distribution system reliability is evaluated. Also, theimprovement effect of reliability worth including the effect of voltage sag is analyzed using customer interruption costaccording to whether or not SFCL is installed.
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문종필,강금춘,권진경,백이,이태석,오성식,남명현,Moon, Jongpil,Kang, Geum-Choon,Kwon, Jin-Kyung,Paek, Yee,Lee, Tae Seok,Oh, Sung-Sik,Nam, Myeong-Hyeon 한국농공학회 2016 한국농공학회논문집 Vol.58 No.5
The effects of spot heating for growing the strawberry cultivated in a plastic greenhouse during the winter that were estimated in Nonsan strawberry experiment station located in Chungnam. The temperature of water for heating was controlled by a electric hot water boiler and kept at the range of $22{\sim}24^{\circ}C$. Heating pipes were set up in root zone for root zone heating and very close to crown for crown heating. Spot heating effects were estimated by applying spot heating system in three test factors of heating root zone, crown only and crown plus root zone. The material for crown heating pipe was white low density polyethylene and the nominal diameter of that pipe was 16 mm. The material for root zone heating pipe was flexible stainless steel and the nominal diameter of that pipe was 15A. The flow rate of heating water circulation was 480 L/h and water circulation lasted for all day long. Temperatures, harvest yield by test beds were surveyed from Nov. 10, 2013 to Apr. 29, 2014. The temperature of crown spot for crown heating bed was at the range of $13.0{\sim}17.0^{\circ}C$ during the night and that of crown spot in control bed was at the range of $8.0{\sim}14.0^{\circ}C$. Also, the temperature of root zone for root zone heating bed was at the range of $18{\sim}21.0^{\circ}C$ and that of root zone in control bed was at the range of $13.0{\sim}15.0^{\circ}C$. The cumulative yield growth rate in earlier harvest period (from Dec. 20 to Mar. 15) of crown heating bed was 43% compared with that of control bed and the cumulative yield of crown plus root zone heating bed was 39 % and that of root zone heating bed was 39 %.
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