| Title |
Numerical Simulation of a Heat Pump Evaporator Considering the Pressure Drop in the Distributor and Capillary Tubes |
| Authors |
박영기(Young-Gi Park) ; 예휘열(Huee-Youl Ye) ; 이관수(Kwan-Soo Lee) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.6.476 |
| Keywords |
휜-튜브 증발기 ; 시뮬레이션 ; 모세관 ; 분배기 ; 공기유속 분포 Fin-and-tube evaporator ; Simulation ; Capillary tube ; Distributor ; Air flow distribution |
| Abstract |
A simulation program was developed to evaluate the heat transfer performance of a multi-pass fin-tube evaporator, considering the pressure drop in the distributor and capillary tubes. The effect of capillary tube length for each pass was analyzed with various inlet air flow types and distributions. The appropriate capillary tube length distribution and correlation were determined for various inlet air flow types and distributions. The correlated results agreed well with the simulation, with an average error of less than 7%. By applying an optimal capillary tube length distribution, the heat transfer rate was increased by 4～5% compared to cases with uniform tubelength distributions, for each of the inlet air flow types and distributions considered in this study. |