Safitri, P.D., A. Hidayat, H A Geralfine, D.Y Nugraha, N. A Tasya, F.H.R Nurrokhim, I.A. Fayrezzi, I. Habibullah, W. Saputro and R.D. Issafira 2024. Cooling Machines and Coefficient of Performance Calculations in Refrigeration Systems. BIOMEJ. 4, 1 (May 2024), 20–26. DOI:https://doi.org/10.33005/biomej.v4i1.113.