• Journal of Bio-Environment Control
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• v.9 no.2
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• pp.107-114
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• 2000

We constructed climagraphs for 16 regions of Korea by using the average monthly minimum air temperature, maximum air temperature and global radiation. We characterized the outside climate requirements corresponding to the climate requirements of crops in greenhouses. The climagraphs allow to decide the appropriate climate periods for greenhouse cultivation without heating and cooling equipment. These graphs may be used for analyzing climatic characteristic of a given area, selecting the suitable region and greenhouse and making a rational plan for greenhouse cropping in Korea. We found difficulty in deciding the beginning and end of greenhouse heating and cooling period due to insufficient references.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.12
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• pp.2315-2322
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• 2008

The requesting a consultation of the farm manager is about the diagnosis and prevention of the breeding and extermination for diseases and insects in greenhouse, the managing problem for diseases and insects turn up a main issue. To solve these problems, this paper proposes a PDA based greenhouse, diseases and insects management system for mobile(GDIMS) uses as keeping up with ubiquitous time, which makes prediction and management for diseases and insects more efficiently checked at any time and anywhere you want to, and go well with the motto of ubiquitous. This system is using the environmental data from the greenhouse attached sensors provide the accurate diagnosis and recipes, which supports to product clean crops. There are no need to visit the greenhouse because our system is based on mobile devices that obtain the information in the greenhouse, which makes management in efficient with little number of people. This wort builds simply virtual greenhouse model that assembles system component of environmental sensor for performance analysis and offers a PDA view of the greenhouse status.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.3
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• pp.294-300
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• 1985

This experiment was carried out to study the root and the other major agronomic traits of barley cultivars at the greenhouse and natural conditions for the accelerating of breeding generation. The barley cultivars tested in this experiment were Kangbori, Olbori and Suwon 18. In early stages, total dry weight of barley was vigorously increased at the greenhouse condition, whereas it was less increased than that of natural condition after heading stages. In dry root weight, it was decreased at natural condition rather than greenhouse condition. The appearance of harvest dry root weight was at four weeks after heading at natural condition and seven weeks after heading at greenhouse condition, respectively. It showed different tendency in T/R ratio, indicating the continuous increased at natural and greenhouse condition, even if there is more or less decrease until tillering stage at greenhouse condition.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1994.11a
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• pp.70-73
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• 1994

우리나라의 시설원예 면적은 급속도로 증가하고 있으나, 시설의 현대화는 이에 따르지 못하고 있다. 농업의 국제경쟁력 제고를 위하여 농촌진흥청 등에서는 현대화된 농가보급형 표준하우스 모델을 개발하여 보급하고 있으나 농민들의 큰 호응을 얻지 못하고 있으며 지역별로 특성화된 온실 형태가 아직도 널리 분포하고 있는 실정이다. 이러한 이유에는 변화에 대한 적응 곤란, 기술 및 자금부족 등의 이유가 있겠으나, 그 외에도 지역적인 기후조건이나 자연환경특성에 있어서 장점이 있기 때문에 기존의 형태를 계속 유지하려는 경향이 지배하고있는 것으로 생각된다. (중략)

• The monthly packaging world
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• s.197
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• pp.110-125
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• 2009

환경부에서 시행하고 있는 탄소성적표지제도는 일상 생활용품, 가정용 기기기 등 모든 제품의 탄소배출량 정보를 공개하고, 저탄소 상품의 인증을 통하여 지구 온난화 대응을 위한 저탄소 녹색생산과 녹색소비를 지원하는 제도이다. 탄소성적표지는 제품의 생산, 수송, 사용, 폐기 등의 모든 과정에서 발생되는 온실 가스 발생량을 CO$_2$ 배출량으로 환산하여 라벨 형태로 제품에 부탁하는 것을 말한다. 탄소성적표지제도는 기업의 자발적인 신청을 받아 한국환경산업기술원이 CO$_2$배출량을 조사해 인증을 내주는 방식으로 온실가스 라벨을 부착하려면 CO$_2$배출량과 구체적인 감축 계획을 제출하는 등 기후 변화에 대한 적극적인 대응 자세를 보여야 한다. 본 고에서는 탄소성적표지 작성 지침과 제품전과정 온실 가스 계산법에 대해 살펴보도록 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.416-417
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• 2019

최근 도시농업의 중요성이 부각되면서 정책적 육성과 지원에 힘입어 다양한 형태의 도시농업 조성이 확대되고 있다. 현대 농업은 스마트팜 보급이 일반화되고 있지만, 대부분의 도시농업은 전통적인 작물재배 방법을 사용하고 있다. 따라서 본 논문에서는 도시농업의 다양한 유형을 고려한 도시형 스마트팜 시스템을 제안한다. 제안하는 도시형 스마트팜 시스템은 스마트팜 통합 컨트롤러와 스마트팜 서비스 플랫폼 서버로 구성되며, 스마트온실 표준 인터페이스 기반의 센서 및 구동기 연동과 IoT 서비스 플랫폼을 이용하여 도시농업의 유형에 따라 유동적으로 시스템을 구성 할 수 있는 환경을 제공한다.

• Journal of Bio-Environment Control
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• v.22 no.1
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• pp.27-33
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• 2013

In order to provide basic data for the development of a controlled environment cultivation system and standardization of the structures, structural status and improvement methods were investigated for the fruit tree greenhouses of grape, pear, and peach. The greenhouses for citrus and grape cultivation are increasing while pear and persimmon greenhouses are gradually decreasing due to the advance of storage facilities. In the future, greenhouse cultivation will expand for the fruit trees which are more effective in cultivation under rain shelter and are low in storage capability. Fruit tree greenhouses were mostly complying with standards of farm supply type models except for a pear greenhouse and a large single-span peach greenhouse. It showed that there was no greenhouse specialized in each species of fruit tree. Frame members of the fruit tree greenhouses were mostly complying with standards of the farm supply type model or the disaster tolerance type model published by MIFAFF and RDA. In most cases, the concrete foundations were used. The pear greenhouse built with the column of larger cross section than the disaster tolerance type. The pear greenhouse had also a special type of foundation with the steel plate welded at the bottom of columns and buried in the ground. As the results of the structural safety analysis of the fruit tree greenhouses, the grape greenhouses in Gimcheon and Cheonan and the peach greenhouses in Namwon and Cheonan appeared to be vulnerable for snow load whereas the peach greenhouse in Namwon was not safe enough to withstand wind load. The peach greenhouse converted from a vegetable growing facility turned out to be unsafe for both snow and wind loads. Considering the shape, height and planting space of fruit tree, the appropriate size of greenhouses was suggested that the grape greenhouse be 7.0~8.0 m wide and 2.5~2.8 m high for eaves, while 6.0~7.0 m wide and 3.0~3.3 m of eaves height for the pear and peach greenhouses.

• Journal of the Korean Society of Hazard Mitigation
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• v.10 no.4
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• pp.1-7
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• 2010

Recently, the damage of the farmhouse has been increased due to frequent collapsing accidents of the pipe greenhouse caused by the heavy snow load derived from unusual weather phenomena. However, the study about it is rare and tenuous so that the damage is happened repeatedly. Although there are a few ways to improve the greenhouse such as increasing section, decreasing the distance between rafters in order to avoid the collapsing accidents, those ways have some shortcomings like cost and frame ratio increase, etc. Therefore, this study performed the large displacement analysis considering geometric non-linearity on each load level with respect to many kind of reinforcement methods and analyzed combined strength ratio and stress so as to search the ways, which enhance the structural stability of greenhouse and minimize the frame ratio increase. As a result, this paper is aimed at suggesting the optimal reinforcement method model.

• Journal of Bio-Environment Control
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• v.26 no.4
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• pp.324-332
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• 2017

The comparative experiments were conducted for single span greenhouses where cucumbers were cultivated to analyze the effect of heating between a carbon fiber electric heating element heater and an oil hot air heater in terms of the inside climate, energy consumption and plant growth. In order to analyze the effect of heating capacity, 6, 9, and 16 kW of electric powers were supplied to the electric heating element for same setting temperature of 15?. As a result, as the heating capacity increased, the number of ON-OFF cycles of the electric heating element and the temperature inside the greenhouse increased proportionally. In the comparison of two heaters, it was shown that the temperature and relative humidity distributions of the electric heating element installed greenhouse was much uniform than those of the oil hot air heater installed greenhouse. The heating energy consumptions during the heating period of 79 days were 867L for the oil hot air heater and 8,959 kWh for the electric heating element heater, and the heating costs were 607 and 403 thousand won respectively. In the electric heating element installed greenhouse, the cucumber growth was slightly better and the yield was 4.3% higher than those of the oil hot air heater installed greenhouse, but there were no statically significant difference in the cucumber growth and yield between greenhouses.

• Journal of Bio-Environment Control
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• v.27 no.1
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• pp.64-70
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• 2018

In this study, eleven major coastal areas were selected and the climate environment and the greenhouse direction were analyzed. This research investigates the greenhouse heat loss according to the wind environment at target areas. The target areas were selected based on heated greenhouse cultivation area and wind environment standard. Temperature, wind speed, and wind direction among weather data for 30 years were collected and analyzed. The data were divided into the minimum, average, and maximum temperatures and the Meteorological Agency criteria applied to the weather and wind direction criteria. Data were collected in the range of $0{\sim}180^{\circ}$ considering the symmetry of the shape of the greenhouse. In addition, the wind direction is different for each region and the applied wind direction can be different when referring to the longitudinal direction of the greenhouse and the data are collected in the range of $0{\sim}90^{\circ}$. The results of this study are expected to be used to calculate the heating load of greenhouse installed in places wind speed high.