Techno-economic evaluation of building envelope solutions in hot arid climate: A case study of educational building

• DOI: 10.1016/j.egyr.2021.07.098
• Publication Date: 2021-11-16T18:42:51Z
• Authors: Micheal A. William; María José Suárez...; Silvia Soutullo; Ahmed A. Hanafy
• Keywords: Retrofitting; Building envelope; Building science; Occupancy

Building energy use is becoming increasingly important worldwide, with the increasing necessity to attain indoor thermal conditions. The high temperatures in hot climates cause human dissatisfaction resulting higher of air conditioning systems. As a result, those buildings rises regularly driven by increase systems operation. In non-residential building sector, system consumes majority building's satisfy comfort requirements. With this aim, simulations have nowadays become an tool fulfill various high-performance buildings. Dynamic often been used designers evaluate buildings' performance accomplish specific goals, as minimizing usage and environmental impacts. This study analyzes savings obtained execution retrofitting measures educational located Egypt through dynamic performance. main objective creation decision matrix select optimal solution for envelope based on effectiveness insulation, cost, factors. Based precise physical characteristics vacancy schedule, geographical location, weather conditions, nature construction, overall consumption would be determined. A sensitivity analysis undertaken assess key factors that influence validated baseline model. chosen it vital efficiency could account up 50% total heat gain building. Thermal insulation one most effective implementations provide desirable minimize transfer into buildings, reduction. Two materials are assessed simulation model, cost each measure estimated, emissions mitigation produced obtained. information, created allows highlighting best option Egyptian arid climates. Among different insulations surveyed Egypt, highlighted using Extruded polystyrene (XPS) thickness 25 mm, reductions about 16% Heating, Ventilation, Air-Conditioning (HVAC) 8% payback period months 29% Return investment (ROI).