Browse > Article
http://dx.doi.org/10.13087/kosert.2021.24.6.109

The effect of Temperature Reduction of Green Roof using Rainwater Storage Tank  

Yun, Seok-Hwan (Interdisciplinary program in Landscape Architecture and Integrated Major in Smart City Global Convergence Program, Seoul National University)
Kim, Eun-Sub (Interdisciplinary program in Landscape Architecture and Integrated Major in Smart City Global Convergence Program, Seoul National University)
Piao, Zheng-Gang (Dept. of Landscape Architecture and Rural System Engineering, Seoul National University)
Jeon, Yoon-Ho (Dept. of Landscape Architecture and Rural System Engineering, Seoul National University)
Kang, Hye-Won (Dept. of Landscape Architecture and Rural System Engineering, Seoul National University)
Kim, Sang-Hyuck (Dept. of Landscape Architecture and Rural System Engineering, Seoul National University)
Kim, Ji-Yeon (Interdisciplinary program in Landscape Architecture and Integrated Major in Smart City Global Convergence Program, Seoul National University)
Kang, Han-Min (Korea institute of green infrastructure)
Ham, Eun-Kyung (Korea institute of green infrastructure)
Lee, Dong-Kun (Dept. of Landscape Architecture and Rural System Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Environmental Restoration Technology / v.24, no.6, 2021 , pp. 109-119 More about this Journal
Abstract
Thermal environment of city is getting worse due to severe urban heat island caused by climate change and urbanization. Green roof improves the urban thermal environment and save the cooling energy in buildings. This study presented a green roof combined with a storage system that stores rain-water and supplies water through a wick and evaluated the temperature reduction effect as surface temperature and amount of evapotranspiration. For about a week, the surface temperature using a infrared thermal imager and the evapotranspiration by recording change of module weight were measured at intervals of 30 minutes from sunrise to sunset. The results show that the mean surface temperature of the green roof was 15.4 degrees lower than that of the non-green roof from 12:00 P.M. to 14:00 P.M. There was no significant difference between mean surface temperature of green roof with and without storage system immediately after rain, but more than a week after rain, there was a difference with average of 2.49 degrees and maximum of 4.72 degrees. The difference in daily amount of evapotranspiration was measured to be 1.66 times on average. As drought stress increased over time, the difference in daily amount of evapotranspiration and surface temperature between with/without storage system increased simultaneously. The results of the study show a more excellent cooling effect of green roof combined with the rainwater storage system.
Keywords
Urban heat island; Surface temperature; latent heat; Cooling effect; Evapotranspiration; Sponge city;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Chow, W.T.L. and Roth, M. 2006. Temporal dynamics of the urban heat island of Singapore. International Journal of Climatology. 26. 2243-2260.   DOI
2 Hoffmann, P..Krueger, O..Schlunzen, K.H. 2012. A statistical model for the urban heat island and its application to a climate change scenario. International Journal of Climatology. 32(8): 1238-1248.   DOI
3 Jim, C.Y. and Tsang, S.W. 2011. Modeling the heat diffusion process in the abiotic layers of green roofs. Energy Building. 43: 1341-1350.   DOI
4 Lee, E.H..Jang, H.K..Ahn, G.Y. 2011. Effects of Extensive Green Roof System on Rainwater Circulation. Journal of the Korea Society of Environmental Restoration Technology. 14(4): 81-88.   DOI
5 Morakinyo, T.E..Kalani,.K.W.D..Dahanayake, C..Ng, E..Chow, C.L. 2017. Temperature and cooling demand reduction by green-roof types in different climates and urban densities: a co-simulation parametric study. Energy Building. 145: 226-237.   DOI
6 Norton, B.A..Coutts, A.M..Livesley, S.J..Harris, R.J..Hunter, A.M..Williams, N.S.G. 2015. Planning for cooler cities: a framework to prioritise green infrastructure to mitigate high temperatures in urban landscapes. Landscape and Urban Planning. 134: 127-138.   DOI
7 Pisello, A. L. and Cotana, F. 2014. The thermal effect of an innovative cool roof on residential buildings in Italy: Results from two years of continuous monitoring. Energy Build. 69: 154-164.   DOI
8 Parker, D.E. 2010. Urban heat island effects on estimates of observed climate change. Wiley Interdisciplinary Reviews: Climate Change. 1(1): 123-133.   DOI
9 Jaffal, I..Ouldboukhitine, S..Belarbi, R. 2012. A comprehensive study of the impact of green roofs on building energy performance. Renew. Energy, 43: 157-164.   DOI
10 Ercolani, G..Chiaradia, E.A..Gandolfi, C..Castelli, F..Masseroni, D. 2018. Evaluating performances of green roofs for stormwater runoff mitigation in a high flood risk urban catchment. Journal of Hydrology. 566: 830-845.   DOI
11 Gill, S..Handley, J..Ennos, R..Pauleit, S. 2007. Adapting cities for climate change: the role of the green infrastructure. Built Environment. 33(1): 115-133.   DOI
12 He, C..Zhao, J..Zhang, Y..Yao, Y..Ma, W..Kinney, P.L. 2020. Cool Roof and Green Roof Adoption in a Metropolitan Area: Climate Impacts during Summer and Winter. Environmental Science & Technology. 54(17): 10831-10839.   DOI
13 Chiaradia, E.A..Gandolfi, C..Castelli, F. Masseroni, D. 2018. Evaluating performances of green roofs for stormwater runoff mitigation in a high flood risk urban catchment. Journal of Hydrology. 566: 830-845.   DOI
14 Gagliano, A..Detommaso, M..Nocera, F..Evola, F. 2015. A multi-criteria methodology for comparing the energy and environmental behavior of cool, green and traditional roofs. Building Environment. 90: 71-81.   DOI
15 Cai, L..Feng, X.P..Yu, J.Y..Xiang, Q.C..Chen, R. 2019. Reduction in Carbon Dioxide Emission and Energy Savings Obtained by Using a Green Roof. Aerosol Air Qual. Res. 19: 2432-2445.   DOI
16 Tang, X. and Qu, M. 2016. Phase change and thermal performance analysis for green roofs in cold climates. Energy Build. 121: 165-175.   DOI
17 VanWoert, N.D..Rowe, D.B..Andresen, J.A..Rugh, C.I..Fernandez, R.T..Xiao, L. 2005. Green roof stormwater retention : Effects of roof surface, slope, and media depth. Journal of Environmental Quality. 34: 1036-1044.   DOI
18 White, I. and Alarcon, A. 2009. Planning policy, sustainable drainage and surface water management: a case study of Greater Manchester. Built Environment. 35(4): 516-530.   DOI
19 Synnefa, A..Saliari, M..Santamouris, M. 2012. Experimental and numerical assessment of the impact of increased roof reflectance on a school building in Athens. Energy Build. 55: 7-15.   DOI
20 Ballinas, M and Barradas, V.L. 2016. The Urban Tree as a Tool to Mitigate the Urban Heat Island in Mexico City: A Simple Phenomenological Model. Journal of Environment Quality. 45(1): 157-166.   DOI
21 Berndtsson, J.C..Emilsson, T..Bengtsson, L. 2006. The influence of extensive vegetated roofs on runoff water quality. Science of the total environment, 355: 48-63.   DOI
22 Radhi, H..Fikry, F..Sharples, S. 2013. Impacts of urbanisation on the thermal behaviour of new built up environments: A scoping study of the urban heat island in Bahrain. Landscape and Urban Planning. 113: 47-61.   DOI
23 Raimondi, A. and Becciu, G. 2021. Performance of Green Roofs for Rainwater Control. Water Resources Management. 35: 99-111.   DOI
24 Aram, F..Garcia, E.H..Solgi, E..Mansounia, S. 2019. Urban green space cooling effect in cities. Heliyon. 5(4): e01339.   DOI
25 Cascone, S..Coma, J..Gagliano, A..Perez, G. 2019. The evapotranspiration process in green roofs: A review. Building and Environment. 147: 337-355.   DOI
26 Charalambous, K..Bruggeman, A..Eliades, M..Camera, C..Vassiliou, L. 2019. Stormwater Retention and Reuse at the Residential Plot Level-Green Roof Experiment and Water Balance Computations for Long-Term Use in Cyprus. Water. 11(5): 1055.   DOI
27 Lee, D.K..Oh, S.H..Yoon, S.W..Jang, S.W. 2006. A Field Study to Evaluate Greenroof Runoff Reduction and Delay. Journal of the Korea Society of Environmental Restoration Technology, 9(6): 117-122.
28 O'Loughlin, J..Witmer, F.D.W..Linke, A.M..Laing, A..Gettelman, A..Dudhia, J. 2012. Climate variability and conflict risk in East Africa, 1990-2009. Proceedings of the National Academy of Sciences. 109(45): 18344-18349.   DOI
29 Rahman, M.A..Moser, A..Gold, A..Rotzer, T..Pauleit, S. 2018. Vertical air temperature gradients under the shade of two contrasting urban tree species during different types of summer days. Science of The Total Environment. 633: 100-111.   DOI
30 Campillo, C..Fortes, R..Henar Prieto, M.D.H. 2012. Solar Radiation Effect on Crop Production. Solar Radiation. 1: 494.
31 Lee, D.K..Yoon, S.W..Oh, S.H..Jang, S.W. 2005. The Effect of Temperature Reduction asInfluenced by Rooftop Greening. Journal of the Korea Society of Environmental Restoration Technology, 8(6): 34-44.
32 Mirzaei, P.A and Haghighat, F. 2010. Approaches to study Urban Heat Island - Abilities and limitations. Building and Environment. 45(10): 2192-2201.   DOI
33 Oke, T. R. 1988. Street design and urban canopy layer climate. Energy and Building. 11: 103-113.   DOI