Energy Consumption Reduction by High Solar Reflective Paint
Keywords:high solar reflective paint, surface temperature reduction, energy saving, actual measurement, energy simulation
High solar reflective paint has been widely used nowadays. It is claimed that it can substantially reduce heat gain through building envelope and energy consumption of houses. This study investigated energy saving from using high solar reflective paint compared with conventional paint. The chosen color tone was dark brown. Actual energy consumption was measured from two houses. One house was painted with high solar reflective paint. The other one was painted with conventional paint. Both houses were identical: 4 m wide x 6 m long x 3.16 m high with 24 m2 floor area. The houses were located in Samut Prakan, Thailand. From actual measurements during March and September 2019 which were in the hot and rainy seasons of Thailand, it was found that high solar reflective paint could reduce exterior surface temperature by as high as 8.1oC and save energy by 31.24% from decreasing cooling load due to less heat gain through the envelope. The energy simulation using the EnergyPlus software showed 32.69% saving which agreed well with the actual results.
Authors who publish with Engineering Journal agree to transfer all copyright rights in and to the above work to the Engineering Journal (EJ)'s Editorial Board so that EJ's Editorial Board shall have the right to publish the work for nonprofit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors' personal use or for company use if the source and EJ's copyright notice is indicated, and if the reproduction is not made for the purpose of sale.