Study the Effect of Granules Type of The Porous Medium on The Heat Transfer Enhancement for Double Pipe Heat Exchanger. Tikrit j. eng. sci. [انترنت]. 25 ديسمبر، 2019 [وثق 10 نوفمبر، 2026];26(4):43-9. موجود في: https://tj-es.com/ojs/index.php/tjes/article/view/133