• 월간 기계설비
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• 통권44호
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• pp.90-101
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• 1994

본 논문에서는 도시공해 방지를 위해 도시가스를 사용하는 경우 거주자의 생활 수준이나 단지의 밀도 및 난방부하 설정 등에 다소 차이는 있으나 소규모 고층아파트(공동주택)의 난방방식중 중앙난방 방식과 개별난방 방식의 초기 시설비, 연료비, 시설 관리비의 경제성을 검토하고 난방 시스템의 지침을 제시하였다. 전체 공사비(초기투자비)는 개별난방 방식이 중앙난방 방식 보다 약2$\%$정도 절감 되었다. 난방비와 시설관리에 따른 인건비 면에서도 난방의 경우 개별난방 방식이 중앙 난방방식에 비하여 난방과 하절기 운수만을 별도로 사용하는 경우 개별난방방식이 중앙난방방식보다 난방비가 9$\%$정도 더 들었으며, 시설관리 인건비 면에서는 중앙 난방 방식보다 개별난방 방식이 66.7$\%$ 적게 들었다. 전체적으로 중앙난방 방식보다 개별난방 방식이 초기투자비 및 유지관리 면에서 경제성이 우수함이 확인되었다. 본지에서는 삼익건설 기획관리부 홍도유 과장이 $\ulcorner$공동주택에 있어서 중앙식과 개별식 가스난방의 경제적 특성에 관한 연구$\lrcorner$ 자료를 이번 3월호를 끝으로 게재한다.

• 한국가금학회:학술대회논문집
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• 한국가금학회 2001년도 제18차 정기총회 및 학술발표 PROCEEDINGS
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• pp.49-51
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• 2001

Betaine functions as an osmoregulators in the cells and its inclusion can spare the choline, carcass fat reduction. Thus, two hundred eighty eight of seventy eight weeks old laying hens were fed with 0, 500, 1,000, 2,000 ppm betaine addition during the environmentally high temperature stress. Basal diets contained 16% CP and 2,800 ME. Egg production, feed intake, feed conversion were examined for eight weeks. Egg qualities, liver betaine, blood osmolarity, AntiDiuretic Hormone(ADH) were measured at the end experiment. Egg production of hens fed 500, 2,000 ppm dietary betaine and showed significance between control and 2,000 ppm betaine treatment(P＜0.05). ADH of blood sera tended to increase as dietary supplemental betaine increased. The results of this experiments indicated that dietary supplemental betaine was able to improve the performance, eggshell breaking strength, liver betaine in this experiment.

• 한국주거학회논문집
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• 제17권2호
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• pp.41-46
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• 2006

This study aims to analyzed thermal comfort characteristics and subject response for thermal environment of Korean traditional houses.. The air temperature and humidity in the living area of the residence were measured in during a day. And the subject response were surveyed to evaluate of controling the thermal environment factor (temperature, humidity, comfort) of the korean traditional houses. As a result, the variation of air temperature and humidity of most rooms are considerably static while condition of outdoors are much varied, it is showed that indoor climate has been controled with traditional soiled walls. And environmental control for the air temperature and humidity is estimated considerably satisfactory.

• 한국태양에너지학회 논문집
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• 제34권6호
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• pp.111-122
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• 2014

The purpose of this study is to understand relation of meteorological elements of air temperature, relative humidity and vapor pressure of four cities with Daegu. The followings are main results from this study. 1) There is very high correlation of meteorological elements according to distance between city and city. 2) In case of seaside town at Pohang, there were little changes than other cities for temperature, humidity and vapor pressure. 3) It was analysed stable and similar diurnal variation in water vapor pressure than air temperature and relative humidity at all observation site.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
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• pp.418-423
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• 1999

This study was performed to find an efficient method to overcome extremely high temperature within greehhouse in summer season. The actual states of practical use for greenhouse in hot summer season were investigated. About 21.6% of the investigated greenhouse farms were no cultivation, and most greenhouse farms were cultivating under the very inferior environment . To examine thermal enviornment of greenhouse according to cooling or assistant cooling , greenhouses were treated with natural ventilation, shading, roof sprinkling , and evaporative cooling with air cool fan. Shading and operating air col fan showed a drop in temperature of 3.8∼4.2$^{\circ}C$ as compared with natural ventilation, and most greenhouse air temperatures were maintained below 35$^{\circ}C$.

• 대한전기학회논문지:전력기술부문A
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• 제54권6호
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• pp.259-266
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• 2005

Short-term load forecasting algorithm using neural networks and the sensitivity of temperatures in the summer season is proposed. In recent 10 years, many researchers have focused on artificial neural network approach for the load forecasting. In order to improve the accuracy of the load forecasting, input parameters of neural networks are investigated for three training cases of previous 7-days, 14-days, and 30-days. As the result of the investigation, the training case of previous 7-days is selected in the proposed algorithm. Test results show that the proposed algorithm improves the accuracy of the load forecasting.

• 전기저널
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• 통권315호
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• pp.44-47
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• 2003

축열시스템(Thermal Storage System)이란 열에너지의 공급과 수요 사이에 있을 수 있는 시간적. 공간적 그리고 양적. 질적 부하 격차를 해소함으로써 에너지 이용효율을 향상시키는 시스템이다. 특히 축냉시스템은 심야전력을 이용해서 생산된 냉열을 저장하였다가 주간의 건물 냉방부하에 이용하는 시스템으로 계절간, 일간 전력부하 격차를 해소하는 중요한 매개체로 활용된다. 하지만 국내 축냉식 심야전력기기는 건물 냉방용으로만 적용대상이 한정되어 있어 보급에 한계가 있으며, 활용기간도 짧아 국가적으로도 자원 낭비적인 요소가 있다. 따라서 하절기 주간 전력부하의 평준화 효과를 확대하기 위해서는 활용기간이 길며, 적용범위가 광범위한 산업(상업 또 농수축산업 포함)용 냉장$\cdot$냉동 시스템에 축냉시스템 적용을 확대할 필요가 제기되고 있다. 이에 국내 산업용 축냉시스템 적용의 타당성 및 전력부하 평준화효과 분석기술 개발현황 및 방향을 소개하고자 한다.

• 월간양계
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• 제38권7호통권441호
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• pp.188-194
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• 2006

풍전부화장-임직원 승진인사 단행/ (주)한펠-고객감사초청세미나 개최 및 승진인사/ (주)마광-영업 및 기타부서 사원 영입/ 우진비엔지(주)-보건복지부장관 표창 수상/ 서울사료(주)-하절기 제품 강화를 통한 대농가 서비스/ 바이엘코리아-곰팡이독소 세미나 개최/ (주)삼양애니팜-품질향상을 위한 주사제 생산시설 교체/ 서부사료-창립37주년 기념행사 개최 및 직원채용/ (주)애그리브랜드 퓨리나코리아-40주년 창립기념식 및 사업전진대회 개최/ (주)경축-창립 36주년 기념 자연보호 행사 개최/ 네오바이오(주)-링거 솔루션 '하이드로솔' 출시/ (주)파루-파리유인제 '파리팡' 출시/ 해훈케미칼(주)-친환경 '파리' 스프레이 유인포충제 '터치킬라-에스' 양계업계 관심집중/ 동부한농-신제푼 넉다운-P, 수퍼킬 출시, 연막·분무 모두 가능한 친환경 살충제 "넉다운-P", 효과 빠른 파리전용 유인 살충제 "수퍼킬"

• 설비공학논문집
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• 제11권6호
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• pp.898-902
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• 1999

During summer season, the weather condition of Korea is hot and humid. So humidity elements are very important relating to building envelope condition. The purpose of this investigation is to measure and analyze characteristics of summer's environmental elements such as relative humidity, dry bulb temperature and air velocity in the clay/cement envelope materials using a granite dome model. According to the variation of exterior humidity, the state of interior relative humidity for clay model has an equal tendency, although a little range of variation is shown in comparison to the cement model.

• 한국태양에너지학회 논문집
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• 제22권4호
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• pp.68-76
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• 2002

This paper discusses thermal and ventilation performance which might be caused by the adoption of one of specific building facade techniques, Double Skin System(DSS). One building with a prototypical DSS was selected and systematically investigated through field monitoring and computer simulation techniques. A network model of ventilation was successfully made using COMIS to evaluate ventilation performance of the system which can hardly be done by field measurements. Various operating conditions of air conditioning on/off and window opening were implemented in this type of building. Through the appropriate operation of the DSS in summer, simulation-based and experimental results implicate that it can lead to cooling energy savings.