| Title |
The Optimal Insertion Position of PCM for the Improvement of the Thermal Comfort of Floor Radiant Heating Systems During Intermittent Operations |
| Authors |
Seong Ho Choi ; Jae Yun Yoo ; Seong Eun Kim ; Jin Chul Park |
| DOI |
https://doi.org/10.6110/KJACR.2021.33.5.233 |
| Keywords |
상변화물질; 바닥복사난방 시스템; 축열성능 Phase change material; Radiant floor heating system; Thermal storage performance |
| Abstract |
The floor structure of the floor radiant heating system of most apartment houses in Korea adopts the standard floor structure advised by the Ministry of Land, Infrastructure, and Transport in order to resolve the noise dispute between floors. In such a floor structure, when the supply of hot water is stopped when the heat storage part of the mortar is shortened during intermittent heating, the surface temperature drops rapidly and it is difficult to expect a continuity in the temperature level. In order to resolve this problem, PCM with excellent heat storage performance was added to the floor radiant heating system. In addition, an optimal PCM insertion location was proposed in order to show more efficient heat storage performance. Two mock-up laboratories have been established to compare the heat storage performance of a standard floor radiant heating system and a PCM applied floor radiant heating system. The PCM was inserted at the top, side, and bottom of the hot water pipe and the temperature change was measured through the introduction of a heating schedule. The experiment confirmed that when the PCM was inserted at the bottom of the hot water pipe, the rising rate and persistence of the floor surface temperature and indoor temperature were higher than that of the general room, making it advantageous to insert the PCM at the bottom. |