LIU, Shuai; LI, Wenqi; XU, Fan; WANG, Hao; YANG, Meiyuan; ZHANG, Zhenying. A Study on a Multifunctional Variable-Condition Heat Pump System for Mitigating Heat Stress in Deep Coal Mines and Utilizing Waste Heat. International Journal of Energy, [S. l.], v. 9, n. 2, p. 28–35, 2026. DOI: 10.54097/9b622p84. Disponível em: https://drpress.org/ojs/index.php/ije/article/view/34849. Acesso em: 30 jul. 2026.