A computer programme for plotting the p-h diagrams of pure fluids, based on the Martin-Hou equation, is described. Flow charts are presented and the subroutines are described. The programme is a general one and is based on knowledge of about 40 constants for each fluid. These constants are presented for five fluids, perfluoro-n-hexane, perfluoromethylcyclohexane, perfluoro-(1,3)-dimethylcyclohexane, perfluoromethyldecalin and dichlorofluoromethane, which are of interest in Rankine cycle work.
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