THERMODYNAMIC ANALYSIS AND OPTIMIZATION OF PROPANEMIXED REFRIGERANT CYCLE TO LIQUEFY THE NATURAL GAS

摘要

In the processes to liquefy the natural gas, the mixed refrigerant cycle is significant in the worldrnover because it has the following merits: less equipments, simple process, small invest, easyrnmanagement. In this paper, the author analyses and optimizes the process. In optimizing calculating,rntwo expressions are used as the objective functions. One is the minimum power consumption ofrnthe propane pre-cool cycle. The other is the minimum total power consumption of the process. Thernoptimum results are the optimum values of the aim functions, the process parameters and thernperformance parameters.