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2021 Vol.12, Issue 2 Preview Page

General Article

How to measure the green façades environmental effectiveness? a proposal to green façade systems technical guide
Marwa Hisham El-Zoklah1*
,
Tamer Refaat2
1Ph.D Candidate, Faculty of Architecture Engineering, Cairo University, Giza, Egypt; Assistant Lecturer, Architecture Department, Faculty of Engineering, Canadian International College (CIC), Land #6, Central services area, south of police academy, 5th settlement, New Cairo city, Cairo, Egypt
2Associate Professor, Architecture Department, Faculty of Engineering, Canadian International College (CIC), Land #6, Central services area, south of police academy, 5th settlement, New Cairo city, Cairo, Egypt
*Corresponding Author
30 June 2021. pp. 154-169
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Abstract

Residential buildings in Egypt consume about 40% of total energy consumption according to the 2018-2019 energy consumption report the residential buildings. Most of this energy consumes in H-VAC to achieve the thermal comfort. So that, the architects start to use the Green façade systems (GFS) to minimizing the heat gain which came from the building envelope to optimize the energy efficiency and also to reduce climatic stress (radiation, heat gain, temperature …etc.), air pollution, CO2 emissions, sound reflections & external noise with taking into consideration the operational costs to gain a market edge and to achieve the best result of GFS Installation the technical guide is very important to insure its success in all of its installation stages and insure the reduction of building energy consumption cost. Also to define the effect of GFS installation on energy efficiency a DesignBuilder has been used to simulate its effectiveness in both (directly to the wall installation and with 60cm air gap) on a residential unit with 12cm wall thickness in 6th October city, Egypt. It installed at east and west direction. The results shows that installation on 25cm wall gives better saving ratio than 12cm also, shows that in west direction: It saved energy by 19:23.7%, decreased CO2 emission by 12.6:18%, heating loads by 18.8:22%, cooling loads by 19: 24.6% and electricity bill payment by 35:38.7%. And in east direction: it saved energy by 17.5:19.7%, decreased CO2 emission by 11.3:16.8%, heating loads by16.8:18.8%, cooling loads by 17.6:22.7% and payment by 29:31.8%.

Keywords
word
green façade system
energy consumption efficiency
retrofitting
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Information
  • Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
  • Publisher(Ko) :건설구조물 내구성혁신 연구센터
  • Journal Title :International Journal of Sustainable Building Technology and Urban Development
  • Volume : 12
  • No :2
  • Pages :154-169
  • Received Date : 2021-03-16
  • Accepted Date : 2021-06-17
  • DOI :https://doi.org/10.22712/susb.20210013
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