Fiberglass Insulation Performance in Reducing Heat Transfer through Wall System

Abstract

The objective of this research was to study the thermal resistance values of exterior walls. To establish guidelines for building refurbishment for energy efficiency and evaluate the value of investment in fiberglass insulation at different densities and thicknesses. The study used the heat transfer analysis method by using the computer program for building energy efficiency assessment (Building Energy Code Software, BEC). The results showed that, in order to achieve the criteria of the Ministry of Energy for the buildings operating 9 and 12 hours per day, the space ratio of translucent walls to the total wall area should be to less than 30%. For the building that operates 24 hours a day, the ratio always should be to less than 35%. When analyzing the financial worth of the wall insulation installation, every options at any ratio of the area of the translucent wall to the wall area the lest option with the lest payback period was fiberglass insulation density 16 kg / m³, thickness 25 mm. Except for buildings that operate 9 hours per day that the area ratio of translucent walls per wall area is equal to 25%. Fiber glass insulation density 16 kg / m³, thickness 50 mm. was the lest option.