Thermal Performance and Integration of Digital Systems in a Water-to-Water Thermoelectric Heat Pump

Ivanov, Oleg

doi:10.25673/123159

Proceedings of International Conference on Applied Innovation in IT · 2025/12/22 · Vol. 13 · Issue 5 · pp. 1191–1196

Thermal Performance and Integration of Digital Systems in a Water-to-Water Thermoelectric Heat Pump

Oleg Ivanov

📄 Download PDF DOI: 10.25673/123159

Abstract

This Paper Investigates the thermal performance of a water-to-water thermoelectric heat pump through the integration of a custom digital monitoring and control system. The study aimed to utilize this system for the experimental determination of the coefficient of performance (COP) under variable influencing factors. Heat transfer was carried out due to the Peltier effect, where the flow of electric current through the converter simultaneously caused heat absorption and heat emission at its thermal sides. Heat exchange on each side was implemented by forced circulation of liquid heat carriers. At one stage of the experiment, the variation of temperature indicators on each side of the converter was investigated with increasing electric current in the range of 3–9 A. On the hot side, the temperature increased linearly from 23.6 °C to 39 °C, while on the cold side it decreased nonlinearly from –4.8 °C to –18.56 °C. At another stage, under steady heat exchange conditions with varying current and heat carrier temperatures, the absorbed and emitted heat and the electrical power consumption of the system were determined. With increasing current, the heat emission Qhot rose linearly from 22 to 118 W, while the electrical power consumption of the heat pump varied quadratically from 16.9 to 155.65 W. The maximum COP reached 135.5%, but decreased exponentially with increasing current, crossing the economically viable threshold of 100% at 7 A. The best results were obtained when transforming thermal energy from a low-temperature source at 15 °C to a high-temperature source at 20 °C.

Keywords

Thermoelectric Converter Peltier Effect Energy Conversion Efficiency Thermal Power Electric Current Heat Pump.

References

A. Komorowska and T. Surma, “Comparative analysis of district heating markets: examining recent prices, regulatory frameworks, and pricing control mechanisms in Poland and selected neighbouring countries,” Polityka Energetyczna – Energy Policy Journal, vol. 27, no. 1, pp. 95–118, 2024, doi: 10.33223/epj/175328.
P. Lorenzen and C. Alvarez-Bel, “Variable cost evaluation of heating plants in district heating systems considering the temperature impact,” Applied Energy, vol. 305, p. 117909, 2022, doi: 10.1016/j.apenergy.2021.117909.
V. Stanytsina, V. Artemchuk, O. Bogoslavska, I. Zinovieva, and N. Ridei, “The influence of environmental tax rates on the Levelized cost of heat on the example of organic and biofuels boilers in Ukraine,” E3S Web of Conferences, vol. 280, p. 09012, 2021, doi: 10.1051/e3sconf/202128009012.
A. Toleikyte et al., The Heat Pump Wave: Opportunities and Challenges, Luxembourg: Publications Office of the European Union, 2023, doi: 10.2760/27877.
P. P. Altermatt, J. Clausen, H. Brendel et al., “Replacing gas boilers with heat pumps is the fastest way to cut German gas consumption,” Communications Earth & Environment, vol. 4, p. 56, 2023, doi: 10.1038/s43247-023-00715-7.
M. J. S. Zuberi, J. Chambers, and M. K. Patel, “Techno-economic comparison of technology options for deep decarbonization and electrification of residential heating,” Energy Efficiency, vol. 14, p. 75, 2021, doi: 10.1007/s12053-021-09984-7.
A. Zini, L. Socci, G. Vaccaro, A. Rocchetti, and L. Talluri, “Working fluid selection for high-temperature heat pumps: A comprehensive evaluation,” Energies, vol. 17, no. 7, p. 1556, 2024, doi: 10.3390/en17071556.
J. Nie, K. Wang, X. Kong, H. Zhang, and S. Zhang, “Theoretical study and experimental validation on the applicable refrigerant for space heating air source heat pump,” Sustainability, vol. 15, no. 12, p. 9420, 2023, doi: 10.3390/su15129420.
A. K. Vuppaladadiyam, E. Antunes, S. S. V. Vuppaladadiyam, Z. T. Baig, A. Subiantoro, G. Lei, S.-Y. Leu, A. K. Sarmah, and H. Duan, “Progress in the development and use of refrigerants and unintended environmental consequences,” Science of The Total Environment, vol. 823, p. 153670, 2022, doi: 10.1016/j.scitotenv.2022.153670.
J. J. Aguilera, W. Meesenburg, T. Ommen, W. B. Markussen, J. L. Poulsen, B. Zühlsdorf, and B. Elmegaard, “A review of common faults in large-scale heat pumps,” Renewable and Sustainable Energy Reviews, vol. 168, p. 112826, 2022, doi: 10.1016/j.rser.2022.112826.
O. Ivanov, Study of the Energy Efficiency of a Thermal Electrical Generator with a Hydraulic Heat Supply System, Universitäts- und Landesbibliothek Sachsen-Anhalt, 2024, doi: 10.25673/118129.
U. Tomc, S. Nosan, B. Vidrih, S. Bogić, K. Navickaite, K. Vozel, M. Bobič, and A. Kitanovski, “Small demonstrator of a thermoelectric heat-pump booster for an ultra-low-temperature district-heating substation,” Applied Energy, vol. 361, p. 122899, 2024, doi: 10.1016/j.apenergy.2024.122899.