Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


A simulation approach for the optimization of distributed energy supply systems based on multiple energy indicators in commercial districts.

Takahiro Ueno
Building Research Institute / Japan, Japan

Abstract: Urban energy supply systems are changing to distributed energy supply systems (DESS) due to the spread of renewable energy. This paper discusses a simulation study for the optimal layout of DESS in commercial districts based on three annual energy indicators: the primary energy consumption (PEC), the life cycle CO2 emissions (LCE), and the standard deviation of power supply and demand (SDP). We evaluated the DESS performance in four commercial districts with different characteristics of located buildings, and confirmed that the DESS with settings specific to each energy index reduced PEC by more than 25% and SDP by more than 90%. On the other hand, some simulation results increased LCE by several percent to several tens of percent. The examination for breakdowns of the CO2 emissions DESS clarified that gas from CHP accounted for more than half of the CO2 emissions in DESS. Further investigations also indicated that CHP in fine weather during the cooling season could not reduce LCE unless the power generation and exhaust heat matched exactly the power and heat demands of the target buildings.
Keywords: Distributed energy, Power demand, Heat demand, Life cycle CO2 emissions, Peak demand
Pages: 2997 - 3004