The Influence of the Envelope Color on Energy Consumption

Abstract

The housing stock in the world and in Algeria is constantly growing, with a sharp increase in energy consumption. An intervention on this park, trying to reduce energy use passively by designing and building energy-efficient housing, can generate significant savings. Indeed, it is possible to act either on the building envelope, or on the heating and air-conditioning equipment, and in Algeria, there is no normative environment for determining the yields and the power of heating or air conditioning appliances. So, in our study, we will opt for an analysis of the behavior of the building, by acting on the building envelope and more particularly on the color of the horizontal and vertical walls (facades and roof) to see its effect on energy consumption. It has been found that the color of the outer wall has an influence on the energy consumption especially for the albedo values which exceed 0.5 (absorption <0.5).