Optimum insulation thickness and exergy savings of building walls in Bamenda: a comparative analysis  

作　　者：Fodoup Cyrille Vincelas Fohagui Yemeli Wenceslas Kohole Njimboh Henry Alombah Derek Ajesam Asoh Ghislain Tchuen 

机构地区：[1]Department of Electrical and Electronics Engineering,College of Technology,The University of Bamenda,P.O.Box 39,Bambili,Cameroon [2]Department of Energetic,Environment and Thermal Engineering,IUT-FV Bandjoun,UR-ISIE,University of Dschang,P.O.Box 134,Bandjoun,Cameroon [3]National Higher Polytechnic Institute and Higher Technical Teacher Training College,The University of Bamenda,P.O.Box 39,Bambili,Cameroon

出　　处：《Energy Storage and Saving》2024年第1期60-70,共11页储能与节能（英文）

摘　　要：The goal of this study is to examine the energetic,entransy,and exergetic methodologies employed to estimate the ideal insulation thickness for construction walls in terms of cost and ecological impact.To achieve these goals,the life cycle cost analysis-based insulating thicknesses of the various methods are evaluated along with the overall costs,yearly cost reductions,and total expenses.The fuel consumption,CO_(2) emissions,and ecological effects are then compared using an environmental analysis based on the three methodologies.The savings of hollow concrete brick(HCB),compressed stabilized earth brick(CSEB),and sundried earth brick(SEB)walls are evaluated along with the insulation thicknesses in terms of cost and ecological impact.As a result,it is determined that the exergetic technique is better suited for optimizing insulating thickness.For CSEB,SEB,and HCB walls,the economic ideal insulation thicknesses are 0.01 m,0.016 m,and 0.02 m,with yearly financial savings of 5$⋅m^(-2),7.5$⋅m^(-2),and 9$⋅m^(-2).For CSEB,SEB,and HCB walls,accordingly,the ecological optimal insulation thicknesses are 0.023 m,0.032 m,and 0.040 m,with net savings of exergetic ecological impact equal to 59 mPts⋅m^(-2),55 mPts⋅m^(-2),and 51 mPts⋅m^(-2).

关 键 词：Insulation thickness Environmental impact Entransy EXERGY EXERGOECONOMIC 

分 类 号：TU111.195[建筑科学—建筑理论]