Premium
A new analytical modeling for the determination of thermodynamic quantities of refrigerants
Author(s) -
Ghandili Ali,
Moeini Vahid
Publication year - 2020
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16293
Subject(s) - refrigerant , joule–thomson effect , thermodynamics , equation of state , supercritical fluid , chemistry , speed of sound , reduced properties , monatomic gas , organic chemistry , physics , gas compressor
A new analytical fundamental equation of state (EOS) is presented for fluids. The equation is explicit in the effective molecular potentials and allows calculation of all thermodynamic properties over the whole fluid surface (gas, liquid, supercritical and gas–liquid phase transition). Outside the critical area (± 0.05 T c ), it is valid in a vast range of temperature and pressure (0.8 T c to 7.5 T c and up to 120 P c ,). The EOS is applicable for a variety of refrigerants such as C 3 H 2 F 4 (HFO‐1234ze (E)), hydrofluorocarbons (HFCs) including C 3 F 8 (R218), C 3 H 2 F 6 (R236ea), C 3 H 2 F 6 (R236fa), C 3 H 3 F 5 (R245ca), C 3 HF 7 , C 4 F 8 (RC318), C 4 F 10 , C 5 F 12 , natural refrigerants including NH 3 , CO 2 , hydrocarbons, monatomic gases and some other fluids. Calculations of second derivatives properties of fluids are sensitive tests of EOS behavior. Therefore, estimation of the thermodynamic properties including Joule‐Thomson coefficient, μ JT , and speed of sound, w, has been considered.