Experimental Analysis of Cool Traditional Solar Shading Systems for Residential Buildings

Energies

Anna Laura Pisello¹ 

[1] Department of Engineering, University of Perugia, via G. Duranti 93, 06125 Perugia, Italy; E-Mail

关键词: cool coatings;    reflective shading systems;    building continuous monitoring;    residential building;    thermal performance;    passive cooling;    test-room;    indoor microclimate;    energy efficiency in buildings;   

DOI  :  10.3390/en8032197

来源: mdpi

【 摘 要 】

In recent years there has been a growing interest in the development and thermal-energy analysis of passive solutions for reducing building cooling needs and thus improving indoor thermal comfort conditions. In this view, several studies were carried out about cool roofs and cool coatings, producing acknowledged mitigation effects on urban heat island phenomenon. The purpose of this work is to investigate the thermal-energy performance of cool louvers of shutters, usually installed in residential buildings, compared to dark color traditional shading systems. To this aim, two full-scale prototype buildings were continuously monitored under summer conditions and the role of the cool shutter in reducing the overheating of the shading system and the energy requirements for cooling was analyzed. After an in-lab optical analysis of the cool coating, showing a huge solar reflectance increase with respect to the traditional configuration, i.e., by about 75%, field monitoring results showed that the cool shutter is able to decrease the indoor air temperature up to 2 °C under free floating conditions. The corresponding energy saving was about 25%, with even much higher peaks during very hot summer conditions.

【 授权许可】

CC BY   
© 2015 by the author; licensee MDPI, Basel, Switzerland.