制冷技术2016，Vol.36Issue(4)：1-7,7.DOI:10.3969/j.issn.2095-4468.2016.04.101
氨水吸收式制冷系统中精馏塔性能模拟与分析
Simulation and Analysis of Characteristics of Distillation Column in Ammonia-water Absorption Refrigeration Systems
摘要
Abstract
The primary task of simulation and analysis of the characteristics of distillation column is the calculation of NH3-H2O phase equilibrium. Firstly, in the present study, five kinds of property calculation methods were selected and tested under different pressures of 1 MPa and 2 MPa, respectively. It’s found that the Peng-Robinson-Boston-Mathias (PR-BM) method predicts the vapour-liquid equilibrium with sufficient accuracy. Then, the equilibrium stage model of the distillation column in the ammonia-water absorption refrigeration system revised by Murphree efficiencies was developed and calculated. The results are found to be in good agreement with experimental data from literature, which verifies the reliability of the model. Finally, the influences of reflux ratio, feed concentration and feed position to the distillation process were explored under different operating conditions. The conclusions obtained have active guidance meaning to further increase the coefficient of performance of the ammonia-water absorption refrigeration system.关键词
精馏塔/物性方法/平衡级/回流比/进料位置Key words
Distillation column/Property method/Equilibrium stage/Reflux ratio/Feed position引用本文复制引用
刘腾,杜垲,鲁洁明,陈谢磊..氨水吸收式制冷系统中精馏塔性能模拟与分析[J].制冷技术,2016,36(4):1-7,7.基金项目
国家自然科学基金项目（No.51476026）。 （）
