Numerical simulation of wallboards constructively incorporated withdifferent pcm content solutions for passive cooling in southern of algeria

Abstract

Buildings in Algeria represent 41.4 % of the total energy consumption.Heating and cooling represent the largest component of energy use. Opportunitiesto reduce the heating and cooling demand in buildings therefore represent apotentially significant part of the future energy and CO2 emission savings. Theheating and cooling loads of buildings are most of the time due to heat transferthrough building envelope. From the point of view of energy saving, the mosteffective way to reduce these loads is to carry out thermo isolation with buildingenvelope, between others, by using phase change materials (PCMs). The effectivenessof wall protection systems depends on several parameters such as orientation, size, and their thermal operation, with respect to the climate. The objective of thiswork is to study the thermal behavior of plaster wall containing three different typesof PCM (eicosane, Na2CO3 10H2O, and CaCl2 6H2O) with variable concentrationsto highlight the importance of quantity and quality of PCM under the climaticconditions in Ouargla city (at south of Algeria). The results indicate thatCaCl2 6H2O gives good performances compared with other PCM. The increasein PCM percentage makes it possible to increase thermal inertia.