Abstract
The paper performs an assessment of the decarbonisation potential in utilizing industrial excess heat to meet the baseload heating requirements of a district heating network in Portugal. The excess heat source considered was a municipal waste-to-energy plant located 5 km from a district heating and cooling network. It performed an economical comparison between two integration procedures: (i) extending the existing pipeline to the excess heat source; and (ii) using a continuous supply of portable thermal storage modules. For the excess heat characterization and tecno-economic assessment, the EMB3RS platform was used. The analysis demonstrated the pipeline alternative more economically feasible (with a levelized cost of heat of 17,25 €/MWh), meeting the baseload consumption with a decarbonisation reduction potential of 30%. The higher levelized cost of heat of the portable thermal storage solution is mainly due to the high daily replacement cost for the thermal stores.
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