Sagyngaliyeva С, Tungatarova М. INVESTIGATION OF THE HEAT TRANSFER PROCESS IN A SHELL-AND-TUBE HEAT EXCHANGER AND THE EFFECT OF TUBE FOULING LAYER. Phys-Math [Internet]. 2025Dec.27 [cited 2026May8];92(4):46-55. Available from: https://bulletin-phmath.kaznpu.kz/index.php/ped/article/view/2689