Open AccessA presentation method of the thermophysical properties of matter in the form of spreadsheets
Author(s) -
Eldar Ramazanov,
A. A. Kosoy,
Hassan Khalife
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1675/1/012094
Subject(s) - flue gas , combustion , interpolation (computer graphics) , supercritical fluid , work (physics) , process engineering , range (aeronautics) , combustion chamber , computer science , thermodynamics , chemistry , environmental science , nuclear engineering , mechanical engineering , materials science , physics , engineering , organic chemistry , frame (networking) , composite material
The research of methods to reduce CO 2 emissions into the atmosphere has led to formation of new thermodynamic cycles in which oxygen is separated from the air before combustion. Fuel, pure oxygen and some recirculating substances, from which it is easy to separate CO 2 formed during the combustion, are fed into the combustion chamber. Usually, CO 2 , H 2 O or a mixture of thereof are used in the form of recirculated flue gas. The parameters in such cycles are chosen at different points in the cycle, where the working fluid can be in liquid, gaseous or supercritical states. The computational study of such cycles requires a convenient presentation of the thermophysical properties of different substances that can be part of the working fluid in a wide range of parameters. The aim of this work is to develop a data array and a computational module (spreadsheet) considering the dependence of the basic thermophysical properties of various substances. A conversion method of variables that allowed the formation of a compact interpolation grid with minimal loss of accuracy during subsequent interpolation was proposed, where the use of integers for the nodal values of the independent variables saved computational resources during interpolation significantly.