A5004453590- Refrigeration and Air Conditioning Technologies
- Heat Transfer and Optimization
- Advanced Thermodynamic Systems and Engines
- Building Energy and Comfort Optimization
- Engineering Technology and Methodologies
- Mechanical Systems and Engineering
- Engineering Diagnostics and Reliability
China Huadian Corporation (China)
2024
Beijing University of Technology
2020-2024
A single screw compressor is widely studied as a promising technology applied in heat pumps. The capacity control mechanism required for the to satisfy actual heating under different working conditions. In this paper, frequency conversion regulating by changing motor rotating speed employed of compressor. Experimental investigations on with variable pump are carried out conditions research its performance. tests have been performed using R22 at evaporating temperatures between -9 °C and 3...
Refrigerant injection techniques are usually proposed to improve the performance and reliability of compressors when a single-screw compressor applied an air-source heat pump works at low temperatures in winter. In this study, experimental study was conducted present comparison under liquid, vapor, liquid–vapor refrigerant evaporation between −19 −8 °C. The results indicate that, temperature decreases from °C, heating capacity vapor increases by 16.7% 12.7%, respectively, compared with that...
The liquid refrigerant injection is an impactful measure to decrease discharge temperature and improve performance of single screw compressor by injecting into the working chamber. modeling calculating mass on presented considering compression, main leakage Exhaust reflux base mechanism compressive process. Injection area significant factor calculate mass, accurate can foresee precisely exhaust compressor. effective be received methods integration projection which means hole projected onto...