Experimental investigation on heat gain reduction using a vinyl perforated ceiling

This paper is investigated the ceiling heat gain reduction by using the vinyl perforated ceiling. Two model houses are served to investigate with the ceiling area about 1.44 m2. The vinyl perforated ceiling made from the vinyl soffit panels, the original dimension as (W:33×H:300 ×t:0.1 cm). Three vinyl ceiling area ratios (vinyl perforated area/ solid vinyl area) were considered. The experiments have been carried out under the climatic conditions of Thailand. The performance of vinyl perforated ceiling was investigated experimentally and compared to a common ceiling (gypsum board). The results indicated that the vinyl perforated ceiling can reduce the ceiling heat gain and attic temperatures are 1-7 W/m2 and 1-4°C, respectively. The percentage of ceiling heat gain reduction is much sufficiently.