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Energetic performance assessment of solar water heating systems in the context of their energy labeling

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  • Mathioulakis, E.E.
  • Christodoulidou, M.C.
  • Papanicolaou, E.L.
  • Belessiotis, V.G.

Abstract

The present work investigates the suitability of a new method for the calculation of the performance indicators of domestic solar water heating systems, within the framework of the European Directive implementation for energy labeling of water heating devices. The various methodology approaches suggested by the directives for the calculation of the expected energy yield from the solar thermal products are being analyzed. The presence of significant issues of reliability and objectivity is being brought out, particularly with regard to the SOLCAL method, which is used for the estimation of the expected energy yield of a thermal energy system, by means of the characteristics of each individual component which the system consists of. A detailed documentation and experimental validation of a new method for the estimation of the expected energy yield of a solar only water heater is outlined. The performance of the proposed method is assessed based on an extensive experimental investigation, whereby discrepancies of the order of 7% or less were obtained for the daily energy yield. From the comparison of performance of the new method against that of the SOLCAL method it is inferred that the former constitutes a reliable alternative choice in the context of energy labeling.

Suggested Citation

  • Mathioulakis, E.E. & Christodoulidou, M.C. & Papanicolaou, E.L. & Belessiotis, V.G., 2017. "Energetic performance assessment of solar water heating systems in the context of their energy labeling," Renewable Energy, Elsevier, vol. 113(C), pages 554-562.
    • Handle: RePEc:eee:renene:v:113:y:2017:i:c:p:554-562
    DOI: 10.1016/j.renene.2017.05.098
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    References listed on IDEAS

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    1. Belessiotis, V. & Mathioulakis, E. & Papanicolaou, E., 2013. "Experimental validation of the input–output modeling approach for large solar thermal systems − Accuracy of the test procedure," Renewable Energy, Elsevier, vol. 51(C), pages 197-205.
    2. Mathioulakis, Emmanouil & Babalis, Stamatis & Kalogirou, Soteris & Belessiotis, Vassilis, 2017. "Energy Labelling and Ecodesign of solar thermal products: Opportunities, challenges and problematic implementation aspects," Renewable Energy, Elsevier, vol. 101(C), pages 728-736.
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    Cited by:

    1. Maraj, Altin & Londo, Andonaq & Gebremedhin, Alemayehu & Firat, Coskun, 2019. "Energy performance analysis of a forced circulation solar water heating system equipped with a heat pipe evacuated tube collector under the Mediterranean climate conditions," Renewable Energy, Elsevier, vol. 140(C), pages 874-883.
    2. Gong, Jing-hu & Zhang, Zhi-peng & Sun, Zhi-hao & Wang, Yu-guang & Wang, Jun & Lund, Peter D., 2023. "Thermal and thermo-mechanical analysis of a novel pass-through all-glass evacuated collector tube by combining experiment with numerical simulation," Energy, Elsevier, vol. 277(C).
    3. Du, Bin & Lund, Peter D. & Wang, Jun, 2021. "Combining CFD and artificial neural network techniques to predict the thermal performance of all-glass straight evacuated tube solar collector," Energy, Elsevier, vol. 220(C).
    4. Kalogirou, S.A. & Agathokleous, R. & Barone, G. & Buonomano, A. & Forzano, C. & Palombo, A., 2019. "Development and validation of a new TRNSYS Type for thermosiphon flat-plate solar thermal collectors: energy and economic optimization for hot water production in different climates," Renewable Energy, Elsevier, vol. 136(C), pages 632-644.
    5. Allouhi, A. & Benzakour Amine, M. & Buker, M.S. & Kousksou, T. & Jamil, A., 2019. "Forced-circulation solar water heating system using heat pipe-flat plate collectors: Energy and exergy analysis," Energy, Elsevier, vol. 180(C), pages 429-443.

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