Analysis of Energy Load according to Design Variables of Building-integrated Rooftop Greenhouse using Building Energy Simulation
학회지: 생물환경조절학회지
저자: 이진석, 이인복, 정다인, 조정화, 정효혁, 최영배
개요
Rooftop greenhouses are gaining attention as a form of urban agriculture that saves energy. Both greenhouses
and buildings require heating and cooling to maintain the indoor environment. Integrated system operation of buildings
and greenhouses can reduce costs by sharing facilities and utilize energy by transferring energy between buildings and
greenhouses. Energy performance evaluation studies of various integrated system have been conducted using building
energy simulation, but verification and design parameter analysis of actual integrated systems are lacking. Therefore, in
this study, we aimed to evaluate energy savings according to design variables through building energy simulation. The
field experiment was conducted in a rooftop greenhouse in Seongsu-dong, Seongdong-gu, Seoul, Korea. The indoor
temperature data was used to validate the building energy simulation model, which showed a result of R2 = 0.91.
The effects of the design variables were then quantitatively analyzed. The energy load tended to decrease when
the integrated system was operated than when it was operated independently. It is considered that the energy load
can be reduced when installing an integrated system, and urban agriculture can become an efficient energy utilization
system. When the thermal infiltration rate of the building's roof was increased from 0.251 W/m2-K to 1.535 W/m2-K,
weakening the insulation performance, the energy load of the rooftop greenhouse and the top floor of the building
tended to decrease. When installing an integrated system, designing it to increase the heat exchange at the boundary
is considered favorable for reducing the energy load. When the rooftop greenhouse area was increased by 2.53
times, the energy load per unit area tended to decrease. Although the amount of energy load increases due to
the increase in greenhouse area, it is judged that the energy load reduction of the integrated system is possible due to
the increase in heat exchange between the building and the greenhouse. The results of this study can be utilized as
a resource for reducing energy load through integrated systems. In future research, additional measures will be needed
to utilize rooftop greenhouses as a solution to energy and food problems due to climate change.
키워드: building energy consumption, energy efficiency, urban agriculture
링크: https://doi.org/10.12791/KSBEC.2025.34.2.169