Daytime space cooling with phase change material ceiling panels discharged using rooftop photovoltaic/thermal panels and night-time ventilation

Eleftherios Bourdakis, Thibault Quentin Pean, Luca Gennari, Bjarne W. Olesen

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Abstract

The possibility of using photovoltaic/thermal panels for producing cold water through the process of night-time radiative cooling was experimentally examined. The cold water was used to discharge phase change material in ceiling panels in a climatic chamber. Both night-time radiative cooling and night-time ventilation were used as the discharging method in five experiments, simulating summer conditions. The operative temperature remained within the range of Category III of standard DS/EN 15251 for 50% to 99% of the occupancy period. The percentage of electrical energy usage covered from the photovoltaic/thermal varied from 56% to 122%. The phase change material ceiling panels were thus, capable of providing an acceptable thermal environment and the photovoltaic/thermal panels were able to provide most of the required electricity and cold water needed for cooling.
Original languageEnglish
JournalScience and Technology for the Built Environment
Volume22
Issue number7
Pages (from-to)902-910
Number of pages9
ISSN2374-4731
DOIs
Publication statusPublished - 2016

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