Photovoltaic (PV)-Green roofs;
Life Cycle Analysis (LCA);
Buildings;
D O I:
10.1016/j.jclepro.2014.03.006
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
The combination of Photovoltaics (PVs) with green roofs is a new tendency in the building sector and provides benefits such as PV output increase because of plant/PV interaction. The present study regards the evaluation of a PV-green roof along with other roof configurations: PV-gravel, green (extensive and intensive), gravel. The evaluation of the systems is based on Life Cycle Analysis by means of Eco-Indicator 99, IMPACT 2002+ and Cumulative Energy Demand methodologies. Stages of the phases of material manufacturing, material transportation, use/maintenance and disposal are considered and the results show that material manufacturing is the most energy-demand phase for all the studied roofs. The roofing systems are separated into PV roofs, non-PV roofs and the comparisons are conducted within each group. Emphasis is given on the PV-green configuration and its comparison with the PV-gravel one, based on different scenarios regarding PV output increase. The results reveal that although the PV-green system has an additional environmental impact in comparison with the PV-gravel one (because of its additional "green" components), this additional impact on a log-term basis can be compensated. Furthermore, the two PV roofs are compared with gasoil and those results also verify the benefits of the PV-green configuration regarding gasoil/cost savings and reduction of CO2 emissions. In general, the study gives emphasis on warm months of Mediterranean climate since PV-green roofs have been proven beneficial under these climatic conditions. Finally, a discussion about critical factors in the field of PV-green systems provides a wider view of the studied issues. (C) 2014 Elsevier Ltd. All rights reserved.
机构:
Univ Helsinki, Finnish Museum Nat Hist, Bot Unit, FIN-00014 Helsinki, Finland
Aalto Univ, Espoo 02150, FinlandUniv Helsinki, Finnish Museum Nat Hist, Bot Unit, FIN-00014 Helsinki, Finland
Chenani, Sanaz Bozorg
Lehvavirta, Susanna
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机构:
Univ Helsinki, Finnish Museum Nat Hist, Bot Unit, FIN-00014 Helsinki, FinlandUniv Helsinki, Finnish Museum Nat Hist, Bot Unit, FIN-00014 Helsinki, Finland
Lehvavirta, Susanna
Hakkinen, Tarja
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机构:
VTT, Tech Res Ctr Finland, Espoo 02044, FinlandUniv Helsinki, Finnish Museum Nat Hist, Bot Unit, FIN-00014 Helsinki, Finland
机构:
City Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R ChinaCity Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China
Shafique, Muhammad
Azam, Anam
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机构:
North China Elect Power Univ, Sch Econ & Management, Beijing, Peoples R ChinaCity Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China
Azam, Anam
Rafiq, Muhammad
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机构:
Univ Engn & Technol, Dept Elect Engn, Taxila, PakistanCity Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China
Rafiq, Muhammad
Ateeq, Muhammad
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机构:
COMSATS Univ Islamabad, Dept Mech Engn, Sahiwal Campus, Sahiwal, PakistanCity Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China
Ateeq, Muhammad
Luo, Xiaowei
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机构:
City Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R ChinaCity Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China
机构:
Univ Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, Spain
Univ Perugia, CIRIAF Interuniv Res Ctr, Via G Duranti 67, I-06125 Perugia, ItalyUniv Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, Spain
Chafer, Marta
Perez, Gabriel
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机构:
Univ Lleida, Dept Comp Sci & Ind Engn, C Jaume II 69, Lleida 25001, SpainUniv Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, Spain
Perez, Gabriel
Coma, Julia
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机构:
Univ Lleida, Dept Comp Sci & Ind Engn, C Jaume II 69, Lleida 25001, SpainUniv Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, Spain
Coma, Julia
Cabeza, Luisa F.
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机构:
Univ Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, SpainUniv Lleida, GREiA Res Grp, Pere de Cabrera S-N, Lleida 25001, Spain