Paper Title
A Study On Determination Of Optimum Thermal Insulation Thickness Using Life Cycle Cost Analysis
Abstract
In this paper, a systematic approach for optimization of thermal insulation thickness used in external walls was
developed. The optimization model was based on the life cycle cost analysis using present worth method. The heat losses
and the heating energy requirement of a prototype building were calculated by using degree-days utilizing long-term
meteorological temperature data. The total cost, including heating cost, insulation material cost and installation of insulation
cost, was calculated, and the cost curves were obtained for different fuel types to determine the optimum insulation
thicknesses. The results show that the optimum thermal insulation thickness varied between 4.2 and 10.3 cm depending on
fuel types. Moreover, the optimum insulation thickness varied more dramatically between 1.6 and 18.5 cm with different
degree-days.
Keywords - Life Cycle Cost; Optimum Thermal Insulation Thickness; Energy Savings.