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Buildings 2018, 8(10), 138; https://doi.org/10.3390/buildings8100138

Study on the Leaves Densities as Parameter for Effectiveness of Energy Transfer on the Green Facade

1
Department of Architectural Design, Vocational School, Diponegoro University, Semarang 1269, Indonesia
2
Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Semarang 1269, Indonesia
3
Department of Architecture, Faculty of Engineering, Diponegoro University, Semarang 1269, Indonesia
4
Department of Physics, Faculty of Mathematics and Sciences, Diponegoro University, Semarang 1269, Indonesia
*
Author to whom correspondence should be addressed.
Received: 30 August 2018 / Revised: 27 September 2018 / Accepted: 29 September 2018 / Published: 1 October 2018
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Abstract

This research involves the study of two models of green facades and a model of bare wall. A house miniature was used as thermal lab. The aim of the project is evaluating the performance of energy transfer based on the various leaves densities on the green facade. Heat calculation was used to calculate heat transfer on the wall surface. There are two kinds of leaves densities, 50% and 90%. The data measurement show that the green facade has a significant cooling effect and more visible for the facade with higher leaves densities. Respectively, from experiment I to experiment III, the average of heat fluxes are 22.35 W/m2, 8.76 W/m2, and 0.60 W/m2 where in experiment III, the negative heat flux occurred during day time due to interior surface temperature is higher than exterior surface temperature. Lastly, higher leaves densities possibility can create a better cooling effect but also has the risk of creating higher relative humidity, especially for the interior air layer. View Full-Text
Keywords: energy transfer; green facade; leaves density; modelling experiment energy transfer; green facade; leaves density; modelling experiment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Widiastuti, R.; Caesarendra, W.; Prianto, E.; Budi, W.S. Study on the Leaves Densities as Parameter for Effectiveness of Energy Transfer on the Green Facade. Buildings 2018, 8, 138.

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