Articles
Analysis on passive and active heat transfer methods of building-integrated rooftop greenhouse for energy saving
Article number
1428_15
Pages
117 – 123
Language
English
Abstract
Domestic protected agriculture in the Republic of Korea has greatly increased its production through modernization and large-scale operation, accounting for about 60% of total agricultural production.
Greenhouse cultivation enables stable mass production throughout the year.
However, because greenhouses have an envelope with relatively low insulation to maximize light radiation, they are vulnerable to changes in the external environment, resulting in a large energy load per unit area.
Rooftop greenhouses – part of building-type urban agriculture – offer a structural advantage that can reduce the energy load of both buildings and greenhouses.
The purpose of this study was to analyze the passive and active energy load-saving effects of rooftop greenhouses and buildings through experiments and simulations.
By locating the greenhouse on the building roof, we analyzed the amount of passive energy load that can be saved compared to a conventional greenhouse.
In addition, we investigated the exchange of residual air heat from the building with the greenhouse to actively reduce the energy load.
The dynamic energy simulation model was validated using the experimental data from the experimental site.
We analyzed load reduction based on the thermal factors affecting the greenhouse energy load using the dynamic energy model.
By using this result, it will be possible to derive an energy saving scenario of the building-integrated rooftop greenhouse model.
Greenhouse cultivation enables stable mass production throughout the year.
However, because greenhouses have an envelope with relatively low insulation to maximize light radiation, they are vulnerable to changes in the external environment, resulting in a large energy load per unit area.
Rooftop greenhouses – part of building-type urban agriculture – offer a structural advantage that can reduce the energy load of both buildings and greenhouses.
The purpose of this study was to analyze the passive and active energy load-saving effects of rooftop greenhouses and buildings through experiments and simulations.
By locating the greenhouse on the building roof, we analyzed the amount of passive energy load that can be saved compared to a conventional greenhouse.
In addition, we investigated the exchange of residual air heat from the building with the greenhouse to actively reduce the energy load.
The dynamic energy simulation model was validated using the experimental data from the experimental site.
We analyzed load reduction based on the thermal factors affecting the greenhouse energy load using the dynamic energy model.
By using this result, it will be possible to derive an energy saving scenario of the building-integrated rooftop greenhouse model.
Authors
J.H. Cho, I.B. Lee, Y.B. Choi, H.H. Jeong, S.M. Kang, D.I. Kim, Y.W. Cho
Keywords
building-integrated agriculture, energy saving, rooftop greenhouse
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