Zhang W, Yang X, Wang T, Peng X, Wang X. Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling. Civ Eng J [Internet]. 2019 Oct. 21 [cited 2025 Jun. 25];5(10):2282-95. Available from: https://civilejournal.org/index.php/cej/article/view/1775