Thermal Comfort Analysis of Combined Radiation-Convection Floor Heating System

Beungyong Park, Seong Ryong Ryu and Chang Heon Cheong
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Beungyong Park: Energy Division, KCL, (Korea Conformity Laboratories), Jincheon 27872, Korea
Seong Ryong Ryu: School of Architectural, Kumoh National Institute of Technology, Daejeon gwangyeoksi 39177, Korea
Chang Heon Cheong: Department of Architectural Engineering, Gyeongnam National University of Science and Technology, Jinju 52725, Korea

Energies, 2020, vol. 13, issue 6, 1-15

Abstract: In this paper, a novel combined radiation-convection floor heating system is shown. This study uses practice-based learning and investigated the thermal performance of a combined radiation-convection floor heating system with a water heat pump system by evaluating the thermal environment and energy consumption in an experimental test. A new method that analyzed the thermal performance of four different controls was developed and applied. The results of the surface temperature distributions demonstrated that Mode 1, which uses only convection, had the lowest floor temperature and was thus considered inappropriate for occupants who sleep on the floor. By contrast, Modes 2, 3, and 4 showed high floor surface temperatures as hot water was supplied to the radiant heating panel. The predicted mean vote (PMV) results suggest that radiant floor heating is not appropriate for intermittent heating. In other words, occupants of single residences who return home at night will experience a long period of discomfort if they heat their room using floor heating. In this case, Mode 1, which is convection heating, and Modes 3 and 4, which represent mixed modes provide a more comfortable environment. The difference between this experimental study and previous research is that four different control modes for a combined radiation-convection system were evaluated based on the same location of the equipment in a laboratory. Furthermore, we studied the long-term real-scale thermal performance using panel and energy consumption.

Keywords: radiant floor heating; convection heating; predicted mean vote; thermal comfort (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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