摘要
对应用于太阳能蒸汽喷射制冷系统中的小型蒸汽喷射器进行了CFD数值模拟。分析了引流压力、喉嘴距和混合室长度对喷射系数的影响。结果表明,引流压力越高喷射系数越大;在同引流压力下存在一最优的喉嘴距和混合室长度。
Numerical simulation is adopted using CFD method to investigate the performance of the mini-steam ejectors that are to be used in a solar steam ejector refrigeration system.The influence of the pressures of entrained steam,the nozzle positions（the clearance between ejector outlet and the throat inlet）and the throat length on the entrainment ratio of ejector is simulated and analyzed.Results show that the entrainment ratio increase with the entrained steam pressure, and there are optimal values of the nozzle position and throat length for a given operating condition.
出处
《建筑热能通风空调》
2008年第3期29-32,共4页
Building Energy & Environment
关键词
小型喷射器
数值模拟
喷射系数
喉嘴距
混合室长度
mini-ejector
numerical simulation
entrainment ratio
nozzle position
throat length
