Evaluation of the coefficient of performance of an air source heat pump unit and an air to water heat pump. Journal of Energy in Southern Africa, [S. l.], v. 32, n. 1, p. 27–40, 2021. DOI: 10.17159/2413-3051/2021/v32i1a7935. Disponível em: https://energyjournal.africa/article/view/7935. Acesso em: 4 dec. 2024.