“NUMERICAL AND EXPERIMENTAL STUDY THE EFFECT OF (SiO₂) NANOPARTICLES ON THE PERFORMANCE OF DOUBLE PIPE HEAT EXCHANGER”, J. eng. sustain. dev., vol. 23, no. 5, pp. 148–171, Sep. 2019, Accessed: May 02, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/216