| Title |
Performance Evaluation of Finned Tube Heat Exchanger withVortex Generators in a Low Reynolds Number Regime |
| Keywords |
Low Reynolds number ; 저 레이놀즈 수 ; Heat transfer enhancement ; 열전달 촉진 ; Pressure loss ; 압력강하 ; Finned tube heat exchanger ; 핀-관 열교환기 |
| Abstract |
The present paper reports the method for evaluation of heat-transfer perfor-mance of finned tube heat exchangers in a low Reynolds number regime(Re＝160∼800) and also reports the data of heat transfer and pressure loss taken from a finned tube heat ex-changer with/without vortex generators(VGs) installed as a heat-transfer enhancement device. The evaluation is based on the modified single blow method conducted in a specially designed low Reynolds number duct. Three different test core geometries, i.e., fin only, fin-tube without VGs and that with VGs, are studied here. The data of heat transfer and pressure loss taken from the fin only geometry agree well with the empirical correlations, thus validating the pre-sent method as used for low Reynolds number regime. The data taken from the finned tube geometries with and without VGs are presented and compared to examine the effect of VGs in the low Reynolds number regime. |