ABSTRACT
This chapter mainly analyzes the design differences between the components of the variable volume ratio two-stage compression air source heat pump system and the components of the single-stage compression air source heat pump system, including optimization and design of the flow cross section areas of the electronic expansion valves?the flow paths of the outdoor fin-and-tube heat exchangers and the inside diameter of the suction pipe of the variable volume ratio two-stage compression air source heat pump system.
