Optimization of Refrigerant Flow Management in a Dual-Unit Air Conditioning System
2000-01-0975
03/06/2000
- Event
- Content
- Optimization of vehicle air conditioning performance at various drive cycles and ambient conditions can be achieved by regulating and distributing the refrigerant flow entering evaporators. Thermostatic expansion valve (TXV), as a flow control device, has been a key element in improving vehicle A/C system operating efficiency and maximizing cooling capacity. Three scenarios are addressed in this paper: (a) the selection of TXVs for a sports utility vehicle (SUV) climate control system, in which a front HVAC unit and an auxiliary HVAC unit are installed; (b) the methodology of developing a goal-oriented criterion for identifying the TXV combination to fulfill the optimization of A/C system performance; and (c) the analytical and experimental evaluation of vehicle cooling performance by varying TXV combinations in various vehicle operating modes.
- Pages
- 14
- Citation
- Ye, L., Martin, D., and Faulkner, T., "Optimization of Refrigerant Flow Management in a Dual-Unit Air Conditioning System," SAE Technical Paper 2000-01-0975, 2000, https://doi.org/10.4271/2000-01-0975.