| Title |
The Characteristic of Convective Heat Transfer Coefficient by Natural Heat Transfer Coefficient and Forced Heat Transfer Coefficient |
| Authors |
Choi Jeong-Min ; Cho Sung-Woo |
| Keywords |
Outer Film Heat Transfer Coefficient ; Natural Convective Heat Transfer ; Convective Heat Transfer |
| Abstract |
Convective heat transfer coefficient is composed of natural plus forced heat transfer coefficient. Convective heat transfer coefficient is affected by more forced heat transfer coefficient than natural convective heat transfer coefficient. Although the existing insulation law is applying the same convective heat transfer coefficient, it ha difference between low-story and high-story in high-rise building. In this study, regression equation can be derived based on the existing four experimental models. With the difference of 10℃, heat transmittance is 0.345 at 3.4m/s and this is 0.349 at 15m/s, the heat transmittance would be increase 1.16%. Therefore, the convective heat transfer should be applied according to building height. |