| Title |
Charactristics of Absorption Heat Transfer on Micro-Scale Hatched Tubes with Different Surface Roughness |
| Authors |
조현철 ; 김춘동 ; 김익생 ; 박찬우 ; 강용태 |
| Keywords |
Roughness ; 거칠기 ; H2O/LiBr ; Performance improvement ; 성능향상 ; Absorber ; 흡수기 ; Micro-scale hatched tubes ; 미소해칭 전열관 |
| Abstract |
Objectives of this paper are to investigate the effect of roughness of micro- hatching tubes on the absorption performance and to develop on experimental correlation of Nusselt as a function of the roughness. Three different micro-scale hatched tubes and a bare tube were tested in the present experiment. H2O/LiBr solution is used as working fluid. It was found that absorption performance of micro-scale hatched tubes were improved upto 2 times with an error band of ±25% compared with the bare tube. An experimental correlation of Nusselt was developed as a function of the roughness. |