Study of Different Building Retrofitting Technologies on Energy Savings

Abstract: Retrofitting building envelope and heating ventilation and air conditioning plants, is crucial to reduce energy consumption. This research work deals with a building where an underfloor heating system, water radiators, and natural ventilation are the main systems used to maintain comfort condition throughout the majority of the building areas. This work involved developing a 3D model relating to building architecture, structure, occupancy & heating ventilation and air conditioning (HVAC) plants operation. Different energy retrofit technologies such as building envelope, lighting, heating, cooling and ventilation, as well as the use of solar energy were analyzed. The objective of this research work was to develop a methodology that start by comparing various energy retrofit technologies and then continues to identify the most suitable in terms of energy savings and cost of investment. Result of the analysis on selected best retrofit technology shows that a reduce cost of investment in 15% was obtained compare to other technologies. Furthermore, electricity consumption savings and heat released can vary between 20 and 30% on monthly basis.