Gouws R, le Roux E. Efficiency and cost analysis of a designed in-line water heating system compared to a conventional water heating system in South Africa. J. energy South. Afr. [Internet]. 2012 Aug. 1 [cited 2024 Jul. 22];23(3):9-15. Available from: https://journals.assaf.org.za/index.php/jesa/article/view/3167