| Keywords |
Prefabricated floor heating panel ; Surface floor temperature distribution ; Highest surface temperature ; Horizontal deviation ; Mock-up test. |
| Abstract |
In this study, the surface temperature of a floor panel was measured during space heating, in a mock-up residential house in which a typical prefabricated floor heating panel was installed. Characteristics of the surface temperature distribution were analyzed, and improvement strategies for the surface temperature distribution were derived. Then, the improved effect on the surface temperature distribution for each derived alternative was compared and analyzed. The mock-up test result showed that the higher the supply water temperature, the more disadvantageous it was, in terms of the highest value, and the deviation of the surface floor temperature. Therefore, strategies to improve the surface floor distribution by increasing the vertical and horizontal heat transfer efficiency in the floor panel are needed. So, these strategies should permit the supply of relatively low temperature water. Four alternatives reflecting each improvement strategy were derived, and, through experiment, the U type panel was selected as the most effective alternative for vertical heat transfer efficiency and horizontally even heat distribution. Under the condition of the same supply water temperature(70oC, 60oC, and 50oC), compared with the typical prefabricated floor heating panel before improvement, the highest surface floor temperature was improved from 39.8oC, 28.9oC, 25.1oC, to 36.1oC, 33.6oC, 29.9oC, respectively, and the maximum deviation of surface temperature also was reduced from 8.5 K, 7.8 K, 7.0 K, to 4.6 K, 3.8 K, 2.6 K, respectively, in the U type prefabricated floor heating panel. These results showed that the vertical and horizontal heat transfer efficiency were improved in the U type prefabricated floor heating panel. |