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Energy and Economic Assessment of Energy Efficiency Options for Energy Districts: Case Studies in Italy and Egypt

Author

Listed:
  • Francesco Calise

    (Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy)

  • Francesco L. Cappiello

    (Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy)

  • Maria Vicidomini

    (Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy)

  • Jian Song

    (Clean Energy Processes Laboratory, Imperial College London, London SW7 2AZ, UK)

  • Antonio M. Pantaleo

    (Clean Energy Processes Laboratory, Imperial College London, London SW7 2AZ, UK
    Department of Agriculture and Environmental Sciences, University of Bari, Via Amendola 165/A, 70125 Bari, Italy)

  • Suzan Abdelhady

    (Electrical Engineering Department, Faculty of Engineering, Fayoum University, 63514 Fayoum, Egypt)

  • Ahmed Shaban

    (Mechanical Engineering Department, Faculty of Engineering, Fayoum University, 63514 Fayoum, Egypt)

  • Christos N. Markides

    (Clean Energy Processes Laboratory, Imperial College London, London SW7 2AZ, UK)

Abstract

In this research, a technoeconomic comparison of energy efficiency options for energy districts located in different climatic areas (Naples, Italy and Fayoum, Egypt) is presented. A dynamic simulation model based on TRNSYS is developed to evaluate the different energy efficiency options, which includes different buildings of conceived districts. The TRNSYS model is integrated with the plug-in Google SketchUp TRNSYS3d to estimate the thermal load of the buildings and the temporal variation. The model considers the unsteady state energy balance and includes all the features of the building’s envelope. For the considered climatic zones and for the different energy efficiency measures, primary energy savings, pay back periods and reduced CO 2 emissions are evaluated. The proposed energy efficiency options include a district heating system for hot water supply, air-to-air conventional heat pumps for both cooling and space heating of the buildings and the integration of photovoltaic and solar thermal systems. The energy actions are compared to baseline scenarios, where the hot water and space heating demand is satisfied by conventional natural gas boilers, the cooling demand is met by conventional air-to-air vapor compression heat pumps and the electric energy demand is satisfied by the power grid. The simulation results provide valuable guidance for selecting the optimal designs and system configurations, as well as suggest guidelines to policymakers to define decarbonization targets in different scenarios. The scenario of Fayoum offers a savings of 67% in primary energy, but the associated payback period extends to 23 years due to the lower cost of energy in comparison to Naples.

Suggested Citation

  • Francesco Calise & Francesco L. Cappiello & Maria Vicidomini & Jian Song & Antonio M. Pantaleo & Suzan Abdelhady & Ahmed Shaban & Christos N. Markides, 2021. "Energy and Economic Assessment of Energy Efficiency Options for Energy Districts: Case Studies in Italy and Egypt," Energies, MDPI, vol. 14(4), pages 1-24, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:4:p:1012-:d:500388
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    References listed on IDEAS

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    3. Diamantis Koutsandreas & Evangelos Spiliotis & Haris Doukas & John Psarras, 2021. "What Is the Macroeconomic Impact of Higher Decarbonization Speeds? The Case of Greece," Energies, MDPI, vol. 14(8), pages 1-19, April.

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