SUDIRMAN LUBIS; RAFSANZANI PANE. Analysis Of The Coefficien Of Performance (COP) Freezer Produced By Solar Cell . International Journal of Science, Technology & Management, [S. l.], v. 2, n. 6, p. 2230–2238, 2021. DOI: 10.46729/ijstm.v2i6.383. Disponível em: https://ijstm.inarah.co.id/index.php/ijstm/article/view/383. Acesso em: 26 mar. 2026.