TY - JOUR TI - Exergetic and energetic evaluation of an innovative solar air Heating system coated with graphene and copper oxide nanoparticles AU - Kumar, R. AU - Verma, S.K. JO - Journal of Thermal Engineering PY - 2021 VL - 7 SP - 447 EP - 467 DO - 10.18186/thermal.887023 ER -