| Title |
Comparative Study on Heat Transfer Performance of Radiant Floor Heating Systems with Heat Spreader Plate |
| Authors |
Chan Kyu Kim ; Min Gyu Bang ; Ji Woong Jeong ; Seung Hyo Baek ; Myoung Souk Yeo |
| DOI |
https://doi.org/10.6110/KJACR.2026.38.10.547 |
| Keywords |
전열판; 열전달 성능; 바닥 복사 난방; 온수 온도 저감 Heat spreader plate; Heat transfer performance; Radiant floor heating; Supply water temperature reduction |
| Abstract |
Radiant floor heating systems with thermal mass can reduce indoor temperature fluctuations; however, thermal lag may delay reaching the target temperature and lead to inefficient operation. Although heat spreader plates such as aluminum panels have been proposed to enhance heat transfer performance, their effectiveness in radiant floor heating systems with thermal mass has not been sufficiently investigated. This study investigates the heat transfer performance and effectiveness of a heat spreader plate in a conventional radiant floor heating system through building energy simulations. The results show that the use of a heat spreader plate improves heat transfer performance, reducing the time required to reach the target indoor temperature by approximately 12-14%. Under on-off control conditions, differences between the systems with and without the heat spreader plate were small during high heating load periods. However, under low heating load conditions, the system with the heat spreader plate showed longer heating cycles during which the indoor temperature remained outside the deadband. In addition, for equivalent indoor thermal conditions, the system with the heat spreader plate required a lower supply water temperature. These results indicate that the heat spreader plate can enhance overall system and heat source efficiency by enabling operation at lower supply water temperatures. |