The main objective of this paper is to verify the difference between water - steam properties obtained from Vukalovich tables (1940) and these obtained by IAPWS-IF97 model. Vukalovich tables are used as the main reference at Damascus University – Fac
ulty of Mechanical and Electrical Engineering – to acquire water and steam parameters used for vapor power cycles (Rankine Cycle). The last revised release on IAPWS-IF97 (International Association for the Properties of Water and Steam of the Industrial Formulation 1997) was in 2012. IAPWS members are United States of American, Canada, Argentina, Brazil, Britain, Ireland, Czech Republic, Denmark, France, Germany, Greece, Italy,
Switzerland (associate member) Japan, and Russia.
