摘要：Coatings used in the indoor or outdoor façade of buildings seriously affect the flow of heat through the opaque elements and determine its energy performance. Sixteen envelope coatings for building façades presenting advanced thermal and optical properties, like low thermal conductivity, high solar reflectance, high emissivity and increased thermal capacity have been developed and tested. The expected energy conservation has been assessed considering different scenarios regarding coating's thickness and position for thermostatically controlled and free floating insulated and non-insulated buildings, located in heating and cooling dominated climates. Based on the results of this study, it was found that in average the energy saving for the cooling loads is up to 48.4% for Athens and 76.2% for Warsaw, while for heating loads is up to 17.2% and 11.8% respectively. Moreover, a proportional decrease was observed in the cooling degree hours (up to 36.8% for Athens and 74.3% for Warsaw) and in the heating degree hours (up to 11.8% and 8.5% respectively). It is concluded that the use of advanced coatings may considerably decrease the heating and cooling energy in buildings and significantly improve indoor thermal comfort conditions.
关键词：advanced building coatings ; low thermal conductivity ; high reflectivity paints
