In this book, published experimental data, tabtes, and equations for four freons are systematized and critically assessed. The freons of the methane series are: freon-20, 21, 22, 23. Based on the analysis of the most reliable data, the authors compiled equations from which comprehensive tables of thermophysical properties of the said substances are computed in a temperature interval from normal boiling point to 473 K and in apressure interval from 0.1 to 20 MPa. The overwhelming majority of these tables are published for the first time.The book is intended for the staff of science-research and designconstruction organizations; for researehers in thermophysics, cryogenics and chernical technology; and could be used by educators, graduate students, and students of physicochernical engineering disciplines.This book contains 53 tables and 38 illustrations.

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