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Abstract
A significant share of energy consumption in residential and public buildings is associated with space heating systems. Conventional radiator heating systems operate with high-temperature heat carriers, resulting in increased heat losses and reduced energy efficiency. Therefore, low-temperature hydronic radiant floor heating systems represent an effective solution for improving thermal comfort while reducing energy consumption. This study evaluates the thermal performance of water-based radiant floor heating systems using analytical methods.
Materials and MethodsThe performance of the hydronic floor heating system was evaluated using analytical methods based on energy balance equations and heat transfer principles. A mathematical model was developed to determine the heat flux transferred through the floor structure as a function of the supply water temperature. The calculations considered conductive, convective, and radiative heat transfer mechanisms.
ResultsThe simulation results demonstrated that the heat flux delivered through the radiant floor increased almost linearly with increasing supply water temperature. Furthermore, the required heating capacity could be achieved even under low-temperature operating conditions while maintaining high energy efficiency.
ConclusionThe analytical evaluation confirms that hydronic radiant floor heating systems are a suitable low-temperature and energy-efficient heating technology. The proposed calculation approach provides a practical tool for designing such systems and selecting optimal operating conditions, contributing to energy conservation and improved building energy performance.
References
[1]. Duffie J.A., Beckman W.A. Solar Engineering of Thermal Processes. – 4th ed. – Hoboken: John
Wiley & Sons, 2013. – 928 p.
[2]. Incropera F.P., DeWitt D.P., Bergman T.L., Lavine A.S. Fundamentals of Heat and Mass
Transfer. – 7th ed. – Hoboken: John Wiley & Sons, 2011. – 1072 p.
[3]. ASHRAE. ASHRAE Handbook: HVAC Systems and Equipment. – Atlanta: American Society
of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), 2020.
[4]. EN 1264-2:2021. Water Based Surface Embedded Heating and Cooling Systems – Part 2: Floor
Heating. – Brussels: European Committee for Standardization (CEN), 2021.
[5]. ISO 11855-1:2021. Building Environment Design – Embedded Radiant Heating and Cooling
Systems – Part 1. – Geneva: International Organization for Standardization (ISO), 2021.
[6]. Olesen B.W. Radiant floor heating in theory and practice // ASHRAE Journal. – 2002. – Vol.
44, No. 7. – P. 19–26.
[7]. Zalba B., Marín J.M., Cabeza L.F., Mehling H. Review on thermal energy storage with phase
change materials and applications // Applied Thermal Engineering. – 2003. – Vol. 23, No. 3. –
P. 251–283.
[8]. Khamraev S.I. Study of the combined solar heating system of residential houses // BIO Web of
Conferences. – 2023. – Vol. 71. – Article 02017.
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Copyright (c) 2026 Xamrayev, S.I., Kamolov, B.I., Qaxromonov, R.A. (Muallif)