Retrofitting strategy for building envelopes to achieve energy efficiency

摘要: Abstract With the excessive energy consumption worldwide, demand for saving strategies increases. Energy in public buildings increased drastically over last decade. Significant policy actions towards promotion of energy-efficiency building sector have been developed with different intensity and structure. This study aims at proposing a retrofit strategy an attempt to improve efficiency sample higher educational located hot arid climate (Egypt). Retrofitting some building’s envelope features can provide comfort without compromising functional needs. Comfort needs, which include thermal, visual acoustical, reduce consumption. Emphasis is placed on thermal terms efficiency. Some important measures used retrofitting process include: external walls’ insulation, windows’ glazing type, air tightness (infiltration) solar shading. The results show that simple such as shading, window glazing, then insulation average 33%. From feasible features’ this study, research provides suggestion design codes maintains comfort, propose baseline reference specifically devised local