TY - JOUR AU - Nazem, seyed Alireza AU - Zahmatkesh, Iman TI - Numerical study on nanofluid natural convection in a vacuum tube solar collector with phase change materials JO - Journal of New Applied and Computational Findings in Mechanical Systems VL - 2 IS - 4 SP - 1 EP - 7 PY - 2023 DO - ER -