engleski

Hourly Optimization Model for the Sizing of District Heating Systems Considering Building Refurbishment

New generations of district heating systems and their ability to utilize renewable resources such as solar and geothermal energy, industrial waste heat, biomass, combined heat and power and power to heat technologies such as heat pumps and electric heaters, is crucial in the development of future energy systems as a whole. In order to fully utilize their benefits, the sizing and operation of these systems needs to be optimized. This is a computationally difficult task due to a large number of parameters that need to be considered and calculated. Another issue is a need for long optimization horizons of at least one year, in order to capture seasonal, and a small time step of one hour or less, to capture intraday variations. The goal of this work has been the development and demonstration of an optimization model capable of handling both the sizing and the operation of a district heating system based on a heat only boiler, solar thermal, electric heaters, heat pumps and heat storage while considering the heating demand reduction due to the building refurbishment. The model has been implemented on five public buildings located in the centre of Buševec. The results from the three analysed scenarios have demonstrated the economic and environmental benefits of the utilization of highly efficient and renewable energy sources in the proposed system.

District heating ; MILP optimization ; Thermal storage ; Unit commitment problem ; Energy planning

nije evidentirano