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Environmental and economic assessment of industrial excess heat recovery collaborations through 4th generation district heating systems

Author

Listed:
  • Chinese, D.
  • Meneghetti, A.
  • Cortella, G.
  • Giordano, L.
  • Tomasinsig, E.
  • Benedetti, M.

Abstract

The external use of excess heat from industrial processes is an important factor in the energy transition and 4th generation district heating is an enabling technology. This paper presents a calculation tool for assessing the economic feasibility and the environmental impact of collaborations between potential industrial sources and users. The tool supports the sizing of district heating pipe diameters, pumps, heat pumps, and heat storage systems. A distinctive feature of the model is the possibility of calculating carbon and blue water footprints, alongside economic indicators, for both existing stand-alone systems and potential collaborative configurations. Excess heat recovery from water-cooled condensers of refrigeration systems is evaluated for two case studies involving the space heating of offices in a food logistics hub and the heating of a greenhouse from a frozen pizza factory, respectively. Only the second collaboration is profitable with the baseline price of natural gas (0.04 €/kWh) and electricity (0.12 €/kWh), provided that the distance between the source and the user is less than 2 km. For higher gas prices, distances of approximately 8 km would be viable. However, for source-user distances above 5 km, the water footprint of the collaboration would be higher than that of stand-alone systems.

Suggested Citation

  • Chinese, D. & Meneghetti, A. & Cortella, G. & Giordano, L. & Tomasinsig, E. & Benedetti, M., 2024. "Environmental and economic assessment of industrial excess heat recovery collaborations through 4th generation district heating systems," Energy, Elsevier, vol. 307(C).
    • Handle: RePEc:eee:energy:v:307:y:2024:i:c:s0360544224024046
    DOI: 10.1016/j.energy.2024.132630
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