受迫内流气体发生的理论及实验关联

THEORY AND CORRELATION ON FORCED INNER-FLOW VAPOR GENERATION

受迫内流气体发生的理论及实验关联郭开华，陈阵，舒碧芬，蒙宗信（中国科学院广州能源研究所热泵及空调制冷技术研究中心广州５１００７０）关键词气体发生，多相流，混合物，传热传质１引言在吸收式能量转换系统（如吸收人热泵、制冷机、吸收压缩复合式热泵、卡林纳动力...

In this paper, the process of the forced flow generation of refrigerant vapor from its absorbent solutions inside an annular-tube generator is analyzed. A theory on the interaction and coupling mechanisms of heat and mass transfer and the method for description of the depression of heat transfer rate due to the non-equilibrium concentration effect combined with the unique phase-change properties of refrigerant-absorbent mixtures are proposed. A generalized form for correlation the heat transfer in the forced flow vapor generation is developed and a new dimensionless group to characterize the interaction between the phase change and mass transfer is found through the formulation. The correlation is in good agreement with the experiment results and the new theory is well supported by the experiment.