A short remark on the solution of Rachford-Rice equation

Ling Lin*, Dan Ni Yu, Chun Hui He, Yanping Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A fast flash calculation of the Rachford-Rice equation is very much needed in many engineering applications, especially in multi-component mixtures. This paper suggests a direct and hands-on calculation by a pocket calculator or a Chinese abacus. The calculation is based on an ancient Chinese mathematics called as He Chengtian average. An example is given to show the simplicity and effectiveness of the ancient Chinese algorithm.

Original languageEnglish
Pages (from-to)1849-1852
Number of pages4
JournalThermal Science
Issue number4
Publication statusPublished - 2018
Externally publishedYes


  • Ancient Chinese mathematics
  • Flash evaporation
  • Rachford-Rice equation


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