• 한국태양에너지학회 논문집
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• 제35권3호
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• pp.41-48
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• 2015

This study is to find out the major design variables of Green roof system effecting on the building energy consumption. Therefore, in three categories of green roof system, namely, foliage layer, soil layer and irrigation, 10 design variables are selected and simulated with one-story case building. Simulation is carried out with Design Builder and EnergyPlus. Finally, it was found out the effects of major variables affecting on the building heating and cooling energy and how they are affecting on the heating and cooling seasons respectively.

• 한국건설순환자원학회논문집
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• 제6권4호
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• pp.252-258
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• 2018

대규모의 에너지 소비 및 인구의 증가로 온실가스 증가 및 열섬 현상이 빈번한 도시는 녹지공간의 증대가 요구되었고, 한정된 도시 공간에서는 건축물 옥상에 녹지공간을 형성하는 옥상녹화가 증대되었다. 옥상녹화에 사용하는 경량토양은 주로 펄라이트를 사용하나 비산, 분진 등 작업환경의 악화로 다른 경량토양의 요구가 증대되었다. 한편 화력발전소에서 발생하는 바텀애시는 재활용을 위한 다양한 연구가 진행되었는데, 인공경량토양으로의 활용가능성도 확인된 바 있다. 본 연구는 기존의 바텀애시 활용 인공경량토양보다 혼합량이 높은 바텀애시를 사용한 인공경량토양을 개발하고자, 바텀애시의 물리적, 화학적 특성을 분석한 후 유기물의 필요성을 확인하고, 바크, 퇴비, 코코피트 등의 유기재료 배합을 달리하여 최적의 배합을 도출하였고, 이 배합을 조경설계기준에서 제시한 토양성능 항목에 적합여부를 확인한 결과, 중급 정도의 성능을 갖는 인공경량토양임을 확인하였다.

• Ecology and Resilient Infrastructure
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• 제9권2호
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• pp.107-112
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• 2022

본 연구는 유기물 멀칭재 종류에 따른 토양수분함량과 동자꽃의 생육반응을 비교·분석하여 저관리 옥상녹화에서 멀칭재의 효용성을 알아보고자 수행하였다. 실험구는 멀칭재를 사용하지 않은 대조구 (Cont.; Control)와 코코칩 (C.O; Cocochip), 우드칩 (W.O; Woodchip), 짚거적 (S.T; Straw), 톱밥 (S.A; Sawdust) 등, 총 5개의 처리구로 조성하였다. 실험결과, 유기물 멀칭재 유형에 따른 토양수분함량은 W.O > S.T > Cont. > C.O > S.A 순으로 높게 나타났으며, 특히 톱밥에서 유의적 차이를 보였다. 생육 측정 결과, 초장에서 S.T > Cont. > C.O > W.O > S.A의 순으로 생육이 좋았으며, 초장을 제외한 다른 생육항목에서의 멀칭재별 유의적인 차이는 미미하였다. 상대엽록소함량과 체내수분량은 모두 무처리구보다 우수하게 나타나 유기 멀칭재 처리가 동자꽃의 엽록소함량 및 체내수분량 유지에 효과적인 것으로 판단된다. 특히 실험구 내 토양수분함량은 멀칭재 자체의 성질에 의해 영향을 받는 것으로 나타나 저관리 옥상녹화에서 각 식물의 특성에 적합한 멀칭재 사용이 요구되며 수분 스트레스에 약한 수종 선정 시 유기물 멀칭을 통해 극복할 수 있을 것으로 판단된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2007년도 춘계학술논문 발표대회
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• pp.5-8
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• 2007

Selection of proper root barrier as destination part of greening is very important in Root penetration resistance plan. To select proper root barrier, it need to understand composition of greening part, size, kind of plant, connection with waterproofing layer. In this point of view, we have establish greening on the roof or concrete structure, not been understand the structural mechanism. It means that we misunderstood about purpose of greening and using it. So, chosen materials and construction method was not proper for greening, it caused water leakage and decrease performance of concrete structure. Therefore, we examine the practical use of copper sheet considering environmental condition for green roof. Watertightness by water of greening part, root penetration resistance test by root penetration, bacteria resistance by must or bacteria in soil, chemical resistance by rain and chemical agent of fertilizer, and load resistance by soil depth, sire of plant. These suggested test methods could be referred as guideline to test in green roof system because of not exist any performance appraisal guideline or standard. Consequently, it should be analysis as technical and institutional subdividing test methods and it need to study constantly as varied angles.

• 한국유기농업학회지
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• 제24권4호
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• pp.787-795
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• 2016

The purpose of this study was to assess drought tolerance of groundcover plants for extensive green roof. Form July to November 2013, plant height, chlorophyll content, soil moisture, evapotranspiration and survival rate was measured. As results, after unirrigation started, Aster koraiensis reached 0% of soil moisture earliest followed by Sedum kamtschaticum, Hemerocallis fulva, Hylotelephium spectabile, Iris sanguinea, Hosta longipes and control. Among the plants, A. koraiensis withered earliest on 19th day of unirrigation experiment, followed by H. longipes and H. fulva (27th day); and I. sanguinea (29th day). S. kamtschaticum and H. spectabile survived even after 120th day of the experiment. As for chlorophyll content, I. sanguinea showed constant values in early stage than rapidly decreased right before its withering. Chlorophyll content of A. koraiensis and H. fulva showed rapid decrease from the beginning, while that of H. spectabile and S. kamtschaticum showed continuous reduction for first 30 days and the reduction was slowed down since then. In conclusion, H. longipes, I. sanguinea and H. fulva were found most applicable for extensive green roof considering scenic aspect.

• 원예과학기술지
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• 제28권6호
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• pp.1057-1065
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• 2010

최근 도시의 환경문제로 인하여 옥상녹화에 많은 관심이 집중되고 있다. 옥상녹화 기술의 핵심은 식물의 생육을 건전하게 유지하는 동시에 건축물에 미치는 하중을 최소화할 수 있는 토양층을 조성하는 것이다. 본 연구는 옥상 환경에서 관목류의 생육을 건전하게 유지하면서 하중을 최소화할 수 있는 최적의 저관리 녹화 시스템을 구명하기 위한 연구의 일환으로서 상록관목인 영산홍을 식물재료로 선정하고 펄라이트를 주재료로 한 토심 30cm, 45cm, 60cm의 인공토양층을 건축물 옥상에 조성한 후, 2001년부터 2008년까지 식물 생육, 토양의 물리적 화학적 특성 변화, 건축물에 미치는 하중에 대한 평가를 수행하였다. RS-A-45와 RS-A-60에서는 실험 기간 동안 100%의 식물 생존율을 나타냈고 RS-A-30과 RS-B-60에서는 2008년에 각각 33%와 67%의 식물 생존율을 나타냈다. RS-A-45에서는 지속적으로 가장 높은 생육량이 나타났고 토양의 물리적 화학적 특성도 가장 우수하게 나타났다. 조성 후 8년이 경과한 시점에서 식물체를 포함한 포장용수 시 RS-A-45의 총중량은 $376.6kg{\cdot}m^{-2}$으로 옥상 녹화 허용 적재하중인 $500kg{\cdot}m^{-2}$보다 상당히 낮아 하중 측면에서도 적합한 것으로 평가되었다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.869-872
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• 2008

On this study, the Control of Temperature is specified on the view of indoor comfort and building energy consumption. It is estimated by Dynamic heat load simulation which has the factors of insulation method and the soil thickness of the green roof system. The fact that the model which has no insulation has the greatest effect of dropping high temperature and the cooling load decrease is confirmed.

• 한국물환경학회지
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• 제25권6호
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• pp.886-895
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• 2009

The guideline of selection of Integrated Management Practices (IMPs), such as wood, green roof, lawn, and porous pavement, for Low Impact Development (LID) design was proposed by ranking the reduction rate of surface runoff using LIDMOD1.0. Based on the guideline, LID was designed with several scenarios at two apartment complexes located at Songpa-gu, Seoul, Korea, and the effect of LID on surface runoff was evaluated during last 10 years. The effect of runoff reduction of IMP by land use change was highly dependent on the kind of hydrologic soil group. The wood planting is the best IMPs for reduction of surfac runoff for all hydrologic soil groups. Lawn planting is an excellent IMP for hydrologic soil group A, but reduction rate is low where soil doesn't effectively drains precipitation. The green roof shows constant reduction rate of surface runoff because it is not influenced by hydrologic soil group. Compared to the rate of other IMPs, the green roof is less effect the surface runoff reduction for hydrologic soil group A and is more effect for hydrologic soil group C and D followed to planing wood. The porous pavement for the impervious area is IMPs which is last selected for LID design because of the lowest reduction rate for all hydrologic soil group. As a result of LID application at study areas, we could conclude that the first step of the strategy of LID design at apartment complex is precuring pervious land as many area as possible, second step is selecting the kind of plant as more interception and evapotranspiration as possible, last step is replacing impervious land with porous pavement.

• 한국환경복원기술학회지
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• 제15권2호
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• pp.137-147
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• 2012

GRS is an effective urban ecology restoration technique that can manage a variety of environmental functions such as ecological restoration, rainwater spill control and island heat effect from a low-impact development standpoint that can be utilized in new construction and retrofits. Recently, quantitative evaluation studies, both domestic and abroad, in the areas related to these functions, including near-earth surface climate phenomenon, heavy rainwater regulation, thermal environment of buildings, have been actively underway, and there is a trend to standardize in the form of technological standards. In particular, centered on the advanced European countries, studies of standardizing the specific insulation capability of buildings with green system that comprehensively includes the green roof, from the perspective of replacing the exterior materials of existing buildings, are in progress. The limitation of related studies in the difficulties associated with deriving results that reflect material characteristics of continuously evolving systems due in part to not having sufficiently considered the main components of green system, mechanisms of vegetation, soils. This study attempts to derive, through EnergyPlus, the effects that the vegetation-related indicators such as vegetation height, FCV, etc. have on building energy load, by interpreting vegetation and soil mechanisms through plant canopy model and using an ecological standard indicator LAI that represent the condition of plant growth. Through this, the interpretations that assume green roof system as simple heat insulation will be complemented and a more practical building energy performance evaluation method that reflects numerical methods for heat fluxes phenomena that occur between ecology restoration systems comprised of plants and soil and the ambient space.

• 한국건축시공학회지
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• 제7권1호
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• pp.79-84
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• 2007

Selection of proper root barrier as destination part of greening is very important in Root penetration resistance plan. To select proper root barrier, it need to understand composition of greening part, size, kind of plant, connection with waterproofing layer. In this point of view, we have establish greening on the roof or concrete structure, not been understand the structural mechanism. It means that we misunderstood about purpose of greening and using it. So, chosen materials and construction method was not proper for greening, it caused water leakage and decrease performance of concrete structure. Therefore, we would suggest 5 items of test methods considering environmental condition for green roof. Watertightness by water of greening part, root penetration resistance test by root penetration, bacteria resistance by must or bacteria in soil, chemical resistance by rain and chemical agent of fertilizer, and load resistance by soil depth, size of plant. These suggested test methods could be referred as guideline to test in green roof system because of not exist any performance appraisal guideline or standard. Consequently, it should be analysis as technical and institutional subdividing test methods and it need to study constantly as varied angles.