TY - JOUR ID - TI - Study surface roughness on overall performance of parallel flow microchannel heat exchanger Study surface roughness on overall performance of parallel flow microchannel heat exchanger AU - Ahmed A. Ali Ahmed A. Ali AU - Mushtaq I. Hasan Mushtaq I. Hasan AU - Ghassan Adnan Ghassan Adnan PY - 2019 VL - 10 IS - 1 SP - 91 EP - 100 JO - University of Thi-Qar Journal for Engineering Sciences مجلة جامعة ذي قار للعلوم الهندسية SN - 26645564 26645572 AB - The aim of this paper is to investigate numerically the surface roughness effects on the overall performance of parallel flow microchannel heat exchanger (PFMCHE) with different hydraulic diameters. Water has been used as working fluid flow velocities in one direction for hot and cold channels with square shape. Surface roughness considered in this study has been choiced as ratio with equal 0.14 of surface roughness to hydraulic diameter. The obtained results showed that, the pumping power increased with increasing effect of surface roughness and decreasing hydraulic diameter, also the thermal performance increased slightly with increasing surface roughness

The aim of this paper is to investigate numerically the surface roughness effects on the overall performance of parallel flow microchannel heat exchanger (PFMCHE) with different hydraulic diameters. Water has been used as working fluid flow velocities in one direction for hot and cold channels with square shape. Surface roughness considered in this study has been choiced as ratio with equal 0.14 of surface roughness to hydraulic diameter. The obtained results showed that, the pumping power increased with increasing effect of surface roughness and decreasing hydraulic diameter, also the thermal performance increased slightly with increasing surface roughness ER -