Dynamic performance of self-operated three-way valve used in a hybrid air conditioner

作者：Zhang, Penglei; Zhou, Dehai; Shi, Wenxing; Li, Xianting; Wang, Baolong^*

来源：Applied Thermal Engineering, 2014, 65(1-2): 384-393.

DOI：10.1016/j.applthermaleng.2014.01.029

• Year-round cooling
• Self-operated three-way valve
• Vapor compression cycle
• Thermosyphon cycle
• Simulation

A hybrid air conditioner combining a thermosyphon cycle with a vapor compression refrigeration cycle has a large energy saving potential compared with a common air conditioner for spaces requiring year-round cooling. The performance of the switch between the vapor compression mode and the thermosyphon mode largely impacts the safety and reliability of hybrid air conditioners. Therefore, a self-operated three-way valve is proposed. A thermodynamic model and a kinetic model are developed in this paper to evaluate the dynamic performance of the switch valve. The effects of the spring force constant, compressor discharging volume, fit clearance and piston length on the dynamic performance of the switch valve are analyzed. In conclusion, the proposed self-operated three-way valve can realize the switch operation accurately.

• 出版日期2014-4
• 单位清华大学