Improving the Efficiency of Green Roofs Using Atmospheric Water Harvesting Systems (an Innovative Design)
| Autor: | Michele Turco, Stefania Anna Palermo, Behrouz Pirouz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Irrigation
lcsh:Hydraulic engineering 020209 energy Geography Planning and Development Green roof 02 engineering and technology 010501 environmental sciences Aquatic Science solar PV 01 natural sciences Biochemistry green roofs lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Dry season 0202 electrical engineering electronic engineering information engineering Roof 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Environmental engineering fog water harvesting sustainability Arid dew water harvesting Water resources Environmental science Dew Water use |
| Zdroj: | Water Volume 13 Issue 4 Water, Vol 13, Iss 546, p 546 (2021) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w13040546 |
| Popis: | Conventional green roofs, although having numerous advantages, could place water resources under pressure in dry periods due to irrigation requirements. Moreover, the thermal efficiency of green roofs could decrease without irrigation, and the plants could get damaged. Therefore, this study aims to improve the efficiency of conventional green roofs by proposing a new multipurpose green roof combined with fog and dew harvesting systems. The analysis determined that the average water use of green roofs in the summer (in humid regions) is about 3.7 L/m2/day, in the Mediterranean regions about 4.5 L/m2/day, and in arid regions about 2.7 L/m2/day. During the dry season, the average fog potential in humid regions is 1.2 to 15.6 L/m2/day, Mediterranean regions between 1.6 and 4.6 L/m2/day, and arid regions between 1.8 and 11.8 L/m2/day. The average dew potential during the dry season in humid regions is 0.1 to 0.3 L/m2/day, in the Mediterranean regions is 0.2 to 0.3 L/m2/day, and in the arid regions is 0.5 to 0.7 L/m2/day. The analysis of the suggested multipurpose green roof combined with fog/dew harvesting systems, in the summer, in three different climates, show that fog harvesting could provide the total water requirement of the green roofs, and that dew harvesting by PV (photo-voltaic) panels could provide 15 to 26% of the water requirements. Moreover, it could show a higher thermal impact on the building, higher efficiency in stormwater management, less dependence on the urban water network, and greater efficiency in decreasing urban air, water, and noise pollution. Finally, the novel green roof system could consume less water due to the shaded area by mesh and solar PVs and maximize the utilization of the roof area, as solar panels could be applied on the same green roof. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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