1991
DOI: 10.1016/0378-7788(91)90069-f
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Energy saving through intermittent evaporative roof cooling

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Cited by 25 publications
(14 citation statements)
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“…It causes a fluctuation in water temperature of about 5 • C. If sprays are added to this method, they can increase its efficiency, and in this way it could reduce heat flux up to 55% in a tropical climate by using 10 cm water layer over a slab and compared with a conventional slab, both of which had 10 cm roofing construction [62]. In another experiment it was up to 40% in an arid climate by using sprays with shallow water compared with a conventional roof in Saudi Arabia which usually had 30 cm roof thickness [63].…”
Section: Uncovered Ponds With/without Spraysmentioning
confidence: 99%
“…It causes a fluctuation in water temperature of about 5 • C. If sprays are added to this method, they can increase its efficiency, and in this way it could reduce heat flux up to 55% in a tropical climate by using 10 cm water layer over a slab and compared with a conventional slab, both of which had 10 cm roofing construction [62]. In another experiment it was up to 40% in an arid climate by using sprays with shallow water compared with a conventional roof in Saudi Arabia which usually had 30 cm roof thickness [63].…”
Section: Uncovered Ponds With/without Spraysmentioning
confidence: 99%
“…Calculations of heat and energy transfers between the system and the boundary can be derivatives using the basic heat transfer equation; many works presenting the mathematical modelling of the panel pond system can also be referenced [17][18][19][20][21][22]. The amount of heat dissipated to the sky by radiation is a function of the pond emissivity, the sky temperature, and the pond water temperature; other factors having an effect are the humidity ratio, clouds, and radiation wavelength which have a direct effect on changes to the emissivity and sky temperature values.…”
Section: Radiative Panel Mathematicalmentioning
confidence: 99%
“…Επιπρόσθετα, επιχειρείται η καταγραφή, η κωδικοποίηση και η αξιολόγηση των τεχνικών παθητικού δροσισμού που σχετίζονται με το δώμα. Τα περιγραφόμενα συστήματα υπάγονται σε τρείς κατηγορίες:  Φυτεμένα δώματα (green roofs)  Ακτινοβολητές δροσισμού (cooling radiators)  Υδατοδεξαμενές (roof ponds) 56 τρόπος σχεδιασμού και λειτουργίας όλων των συστημάτων των δύο αυτών κατηγοριών, με την πλήρη καταγραφή των κατασκευαστικών και λειτουργικών τους χαρακτηριστικών. Πραγματοποιείται αναφορά σε έρευνες βασισμένες σε πειράματα ή προσομοιώσεις, οι οποίες αφορούν στην απόδοση των συστημάτων.…”
Section: συμπεράσματα 1 ου κεφαλαίουunclassified
“…Η στεγάνωση της υδατοδεξαμενής επιτυγχάνεται με την τοποθέτηση φύλλου από PVC, ενώ το δώμα έχει κλίση προς την υδρορρόη για την απομάκρυνση όμβριων ή τυχόν διαρροών από την υδατοδεξαμενή. Η ελεύθερη επιφάνεια καλύπτεται από φύλλο πολυστερίνης πάχους 0,10m 56 .…”
Section: I) ακτινοβολητές νερούunclassified
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