NGUYỄN VĂN THÁI; LÊ MINH NHỰT. The study on effect of waste water temperature on performance of heat pump water heater WTW. Journal of Technical Education Science, [S. l.], v. 12, n. 4, p. 65–70, 2017. Disponível em: https://www.jte.edu.vn/index.php/jte/article/view/568. Acesso em: 7 apr. 2026.