Analysis of operating characteristics of interconnected operation of thermal grids with bidirectional heat trade

초록

This study analyzed the effects of bidirectional heat trade of extra heat on the overall operational efficiency of interconnected thermal grids with empirical correlation formulation. A decision support operational simulation tool was developed to assess the technical-, and techno-economic performance of the complex and highly non-linear interconnected thermal grid system. From the techno-economic feasibility analysis for the test case of a hypothetical new thermal grid with a peak heat demand of 60 MWh, it was analyzed that the operating profit could be secured only for the gas engine, estimated to be about 8%. Moreover, the sensitivity analysis revealed that fuel price has the most dominant effect on operating profit in that the gas engine can attain 21% of operating profits as the fuel price is assumed to decrease by 20%. This study demonstrated the possibility of attaining favorable operational benefits with interconnected operation between thermal grids in terms of technological and techno-economic aspects with a newly proposed approach with empirical correlation formulation. © 2023 The Author(s)

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