热力发电2025，Vol.54Issue(2)：97-108,12.DOI:10.19666/j.rlfd.202406147
热泵涡旋压缩机内流场数值模拟及变工况特性研究
Numerical simulation of flow field in heat pump scroll compressor and study on characteristics of variable operating conditions
摘要
Abstract
As a key component of air source heat pump,the thermodynamic performance of scroll compressor has an important influence on the heat pump system.A three-dimensional transient simulation model of the scroll compressor is established,and the accuracy of the model is verified through experiments.Based on computational fluid dynamics method,the non-uniformly distributed flow characteristics of internal flow field of the scroll compressor under the influence of tangential leakage flow are investigated.The influence of different operating conditions on thermodynamic performance of the scroll compressor is explored.The sensitivity analysis method is used to discuss the sensitivity of thermodynamic performance of the scroll compressor under different operating conditions.The results show that,with the increase of pressure ratio,the isentropic efficiency increases at first and then decreases,the heat production decreases,the maximum increase in time-averaged exhaust temperature is 11.26 K.When the suction temperature increases to 311.65 K,the isentropic efficiency grows by 16.72 percentage points.The increase of rotational speed will weaken the phenomenon of reflux and reduce the exhaust temperature,when the rotational speed rises to 4 500 r/min,the volumetric and isentropic efficiencies increase to 86.61%and 46.86%,respectively.关键词
空气源热泵/涡旋压缩机/数值模拟/流场特性/变工况Key words
air source heat pump/scroll compressor/numerical simulation/flow field characteristics/variable operating conditions引用本文复制引用
彭斌,赵亚珑..热泵涡旋压缩机内流场数值模拟及变工况特性研究[J].热力发电,2025,54(2):97-108,12.基金项目
国家自然科学基金项目(51675254,51966009) （51675254,51966009）
国家重点研发计划项目(SQ2020YFF042098) （SQ2020YFF042098）
甘肃省科技计划项目(20YF8GA057) （20YF8GA057）
甘肃省优秀博士生项目(22JR5RA235) National Natural Science Foundation of China(51675254,51966009) （22JR5RA235）
National Key Research and Development Program(SQ2020YFF042098) （SQ2020YFF042098）
Science and Technology Program of Gansu Province(20YF8GA057) （20YF8GA057）
Excellent Doctoral Program of Gansu Province(22JR5RA235) （22JR5RA235）
