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Energy Efficient Building
ππ π₯ 100 (1) The results of energy saving of the three plots with green roofs, compared to the reference plot, are
πΈπππππ¦ π ππ£πππ(%) =
πΒ΄
βπΒ΄
ππ
πππ πΒ΄
shown in Figure 2.
o
Figure 2. Energy saving of the three green roofs.
It can be observed that all plots with green roofs achieved energy saving greater than 67.5 %, w i t h respecttothereferenceplot.TheplotthatachievedthebestresultswasP1,withameanvalue of energy saving of 90.0%. The greater reduction was obtained in August, with a value of 92.3%. This behavior is mainly due to the capacity of the substrate to retain water. The results suggested that all the green roofs allow a significant reduction of energy gains during the summer months. In conclusion, green roofs can be considered as an interesting passive construction system to achieve energy saving in buildings located in South European climates.
3. Acknowledgements
Weather data from the Agroclimatic Information Network of Andalusia which have been supplied by the Institute of Research and Agricultural and Fisheries Training of the CAPDR of the AndalucΓa Regional Administration, Junta de AndalucΓa. The authors would like to express appreciation for the financial support of the European Regional Development Fund (ERDF).
4. References
Besir, A.B., Cuce, E., 2018. Green roofs and facades: A comprehensive review. Renew. Sustain. Energy Rev. 82, 915β939.
Li, D.H.W., Yang, L., Lam, J.C., 2013. Zero energy buildings and sustainable development implications - A review. Energy 54, 1β10.
Shafique, M., Kim, R., Rafiq, M., 2018. Green roof benefits, opportunities and challenges β A review. Renew. Sustain. Energy Rev. 90, 757β773.
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