A novel vapor injection structure on the blade of a rotary compressor

作者：Liu Xingru; Wang Baolong^*; Shi Wenxing; Zhang Penglei

来源：Applied Thermal Engineering, 2016, 100: 1219-1228.

DOI：10.1016/j.applthermaleng.2016.02.098

• Injection structure on blade
• Vapor injection
• Rotary compressor
• Volumetric efficiency
• R32

Heat pumps with rotary compressors operating in low ambient temperature will face heavy performance degradation. A novel vapor injection structure on the blade for the rotary compressor has been proposed in this paper to overcome the back-flowing drawback of the traditional cylinder injection structure and increase the injection area. Based on a verified numerical model, the performance of a rotary compressor with the blade injection structure has been investigated. The results indicate that: the proposed vapor injection structure can eliminate the back-flowing of the injected refrigerant; compared to the traditional injection structure, the new structure can enhance the volumetric efficiency and mass flow-rate by 1.8-2.7% and 26.6-57.2%, respectively; and compared to the traditional injection structure, the new structure can increase the heating capacity and COP by 23.1-48.9% and 3.2-8.0%, respectively.

• 出版日期2016-5-5
• 单位清华大学