Experimental Study of Thermal Resistance Values of Natural Fiber Insulating Materials under Different Mean Temperatures

The purpose of this paper is to experimentally study the thermal resistance (RSI value) building insulation materials made mainly from natural fiber. Natural fibrous or renewable resources and their reinforcement composites are currently being used in construction as a potential solution significantly reduce load energy consumption. RSI value describing efficiency insulating material an analysis heat transfer through structural components (such walls, roofs, windows) under steady-state conditions. In study, values several samples coir fiber, rice straw reed coconut wood were calculated conductivity which was measured at mean temperature 20°C, using flow apparatus. lowest recorded phenol-formaldehyde polymer reinforced by fiber (0.115 m2·K·W-1) (0.128 due relative thinness tested (8 12 mm). However, these can be additional layer multi-layered assemblies because low value. highest reported on binderless panel (0.909 thickness 50 mm. Another investigation examined relationship between observe influence variations ambient resistivity materials. Practical data showed decreased linear proportion specific temperatures increased 0 40°C. It apparent that increase interior exterior influences its Based experimental once coefficient each sample determined, valuable parameter evaluate resistant effectiveness installation, allows us investigate practically effect layers different envelopes.