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Cost-Optimality Assessment of a Solar Trigeneration System for Tertiary Sector Buildings in Greece

Author

Listed:
  • Dimitrios Tziritas

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece)

  • Konstantinos Braimakis

    (Laboratory of Refrigeration, Air Conditioning & Solar Energy, National Technical University of Athens, 9 Heroon Polytechniou Str., 15780 Zografou, Greece)

  • Dimitris Bakirtzis

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece)

  • George M. Stavrakakis

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece
    Department of Mechanical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion, Greece)

  • Sofia Yfanti

    (Department of Mechanical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion, Greece)

  • Konstantinos Terzis

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece)

  • Panagiotis Langouranis

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece)

  • Panagiotis L. Zervas

    (MES Energy S.A., Aiolou Str. No. 67, 10559 Athens, Greece)

  • Sotirios Karellas

    (Laboratory of Thermal Processes, National Technical University of Athens, 9 Heroon Polytechniou Str., 15780 Zografou, Greece)

Abstract

To pave the way towards buildings’ decarbonization in the context of the European Union’s (EU) policy, the methodology of cost-optimality assessment based on regulation 244/2012/EU is a useful tool to explore and foster the application of energy technologies in buildings. Meanwhile, the fostering of concentrated solar power is included in the EU solar energy strategy. In this study, the cost-optimal methodology is employed for the techno-economic assessment of the integration of a novel solar, multi-purpose energy technology, namely a parabolic trough collector-based trigeneration system, in two building types with different characteristics, namely an office and a hospital, in Greece, thus allowing the evaluation of the cost-optimal system design and the impact of the building type on the system’s techno-economic performance. Reference buildings are defined and their energy demand is calculated through dynamic energy simulations. The trigeneration system’s performance for different design scenarios is then parametrically investigated using a simulation model. For each scenario, energy, environmental and economic indicators are calculated and the cost-optimal designs are extracted. In the cost-optimal implementation, the system covered 18.19–36.39% and 3.58–15.71% of the heating and cooling demand, respectively, while the reduction of the primary energy consumption and emissions was estimated at 10–14% and 10–16%, respectively. However, differences between the buildings related to the operation schedule and the loads led to the implementation of the system being economically more attractive in the hospital, while for the office, financial support is necessary for a viable investment.

Suggested Citation

  • Dimitrios Tziritas & Konstantinos Braimakis & Dimitris Bakirtzis & George M. Stavrakakis & Sofia Yfanti & Konstantinos Terzis & Panagiotis Langouranis & Panagiotis L. Zervas & Sotirios Karellas, 2024. "Cost-Optimality Assessment of a Solar Trigeneration System for Tertiary Sector Buildings in Greece," Energies, MDPI, vol. 17(12), pages 1-34, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:12:p:2819-:d:1411212
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    References listed on IDEAS

    as
    1. Braimakis, Konstantinos & Karellas, Sotirios, 2017. "Integrated thermoeconomic optimization of standard and regenerative ORC for different heat source types and capacities," Energy, Elsevier, vol. 121(C), pages 570-598.
    2. Dimitrios Tziritas & George M. Stavrakakis & Dimitris Bakirtzis & George Kaplanis & Konstantinos Patlitzianas & Markos Damasiotis & Panagiotis L. Zervas, 2023. "Techno-Economic Analysis of a Hydrogen-Based Power Supply Backup System for Tertiary Sector Buildings: A Case Study in Greece," Sustainability, MDPI, vol. 15(9), pages 1-23, May.
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