A comprehensive energy supply model in an office building based on the reference energy system

In the last decade, technological innovations have resulted in considering distributed generation with heat recovery capability in addition to centralised generation. This work aims to develop a comprehensive model analysing techno-economic parameters of energy supply in an office building. The energy model is developed on the basis of the reference energy system with the linear programming technique. The objective function is the annual value of total costs of the energy supply system. The results of the model for the building of Sharif Energy Research Institute indicate that the most appropriate generation technology is an internal combustion engine of 461kW and a water boiler of 152kW. In addition to supplying the final service demand, hot water feeds an absorption chiller of 507kW to produce cold water. Furthermore, storage systems of hot and cold water are required in order to achieve high load factors in the system.