Autors: Totev, V. V., Gueorgiev, V. T., Vasilev H.
Title: An Analysis of the Feasibility of Renewable Energy Sources to Supply Thermal Loads
Keywords: district heating, energy efficiency, photovoltaics, renewable energy

Abstract: An analysis of the feasibility of renewable energy sources (RES) to supply thermal loads is performed in this paper. Additionally, the possibility to return hot water in district heating (DH) system is explored. The object of the analysis is a large swimming pool and considered RES are solar collectors (SCs), photovoltaics (PVs) and photovoltaic thermal (PVTs). Based on a techno-economic assessment the following conclusions can be drawn - PVs have the lowest payback period, SCs exhibit the best efficiency to capital cost ratio. However, with current state of PVs, their low price can easily push oneself towards investing in increasing the overall PV capacity and also in battery storage systems. PVTs are an emerging technology that has yet to prove itself. Unfortunately, it is inexpedient to return hot water in the DH system, as this is bound to increase water losses drastically.

References

  1. Ieva Pakere, Dagnija Blumberga, Solar power or solar heat: What will upraise the efficiency of district heating? Multi-criteria analyses approach, Energy, Volume 198, 2020, 117291, ISSN 0360-5442, https://doi.org/10.1016/j.energy.2020.117291.
  2. A. Kang, I. Korolija, D. Rovas, Photovoltaic Thermal District Heating: A review of the current status, opportunities and prospects, Applied Thermal Engineering, Volume 217, 2022, 119051, ISSN 1359-4311, https://doi.org/10.1016/j.applthermaleng.2022.119051.
  3. Sven Werner, International review of district heating and cooling, Energy, Volume 137, 2017, Pages 617-631, ISSN 0360-5442, https://doi.org/10.1016/j.energy.2017.04.045.
  4. Ieva Pakere, Dace Lauka, Dagnija Blumberga, Solar power and heat production via photovoltaic thermal panels for district heating and industrial plant, Energy, Volume 154, 2018, Pages 424-432, ISSN 0360-5442, https://doi.org/10.1016/j.energy.2018.04.138.
  5. Veronica Ngunzi, Francis Njoka, Robert Kinyua, Modeling, simulation and performance evaluation of a PVT system for the Kenyan manufacturing sector, Heliyon, Volume 9, Issue 8, 2023, e18823, ISSN 2405-8440, https://doi.org/10.1016/j.heliyon.2023.e18823.
  6. Saidi, S., Brahim, T. and Jemni, A. Numerical investigation of indirect parallel PVT solar systems using MATLAB/simulink, IOP Publishing, Engineering Research Express, Volume 7, Number 1, 2025, doi: 10.1088/2631-8695/adae55.
  7. Roshanzadeh B, Premer LR, Mohan G. Developing an Advanced PVT System for Sustainable Domestic Hot Water Supply. Energies. 2022; 15(7):2346. https://doi.org/10.3390/en15072346.
  8. Kohei Terashima, Haruki Sato, Toshiharu Ikaga, PV/T solar panel for supplying residential demands of heating/cooling and hot water with a lower environmental thermal load, Energy and Buildings, Volume 297, 2023, 113408, ISSN 0378-7788, https://doi.org/10.1016/j.enbuild.2023.113408.
  9. Nicolas Pardo Garcia, Ghassan Zubi, Guzay Pasaoglu, Rodolfo Dufo-Lopez, Photovoltaic thermal hybrid solar collector and district heating configurations for a Central European multi-family house, Energy Conversion and Management, Volume 148, 2017, Pages 915-924, ISSN 0196-8904, https://doi.org/10.1016/j.enconman.2017.05.065.

Issue

2025 19th International Conference on Electrical Machines, Drives and Power Systems, ELMA 2025 - Proceedings, 2025, Bulgaria, https://doi.org/10.1109/ELMA65795.2025.11083403

Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus