Abstract:
This research is an experimental research conducted in an actual setting. The purpose of this research is to compare the effectiveness of heat gain reduction building wall comparing with thermal insulation made from rubber leaf with fiber glass, cellocrete and polyurethane foam to find out the effectiveness of rubber leaf thermal insulation for heat gain reduction the procedure of this research was carried out with a stipulated one-level building with a 3.50n meters wide,5.00 meters long and2.50 meters high. This room was divided to 4 small rooms about 1.00 meters x2.00 meters to draw a comparison between each variable. Each room was protected from sun heat from the north, was and west ,the heat was only consented to these rooms from the south. That means, all of these rooms was specified with the same condition without air condition. The first experimental room was put in a lining by 1.00 inch thick of rubber leaf thermal insulation. Another 3 rooms was sequentially lined with 2.00 inches thick of fiber glass, 1.00 inch thick of cellocrete and 1.00 inch thick of polyurethane foam. The data were collected every 2 minutes consecutively for 48 hours or 2 days. Experimental effectiveness analysis was considered by the difference of degree hours. The base starting temperature used was 18 ℃ to analysis and compare the effectiveness of the experiment. Using the difference of degree hours as the variable foe comparing the conclusion is shown as follows: all thermal insulations has effectiveness if heat gain reduction. But those made from rubber leaf is the most capable for heat reduction and it also has a same effectiveness of heat decreasing as fiber giass.