CALCULATION OF A HEAT EXCHANGER FOR HEATING AIR ON WATER TREATMENT UNITS (WPU). Journal of Academic Research and Trends in Educational Sciences, [S. l.], v. 3, n. 2, p. 282–286, 2024. Disponível em: https://ijournal.uz/index.php/jartes/article/view/1265. Acesso em: 25 apr. 2025.