OilProp descriptions OilProp is designed to assess the core thermalphysic properties of oil & its derivatives necessary to solve transportation & processing tasks with the minimum volume of input data. It is based on regularities & statistics generally known in the area. OilProp solves the following tasks: 1. Basic Calculation - calculation of thermalphysic properties at the atmosphere pressure & the temperature 20 deg. . The calculation results are used for hydraulic analysis of pipelines as well as in design of equipment intended for storage thermostating transportation mixing spraying homogenization of oil & its derivatives. Density & / or fractional composition of the substance are used as input data . The program calculates density isobaric specific heat thermal conductivity kinematic viscosity average saturated vapor pressure surface tension the Prandtl number & pseudocritical temperature. 2. Additional Calculation - calculation of thermalphysic properties of a substance in liquid & gas phases at given absolute pressure & temperature within the under-critical range. The calculation results are used for process modeling & design of equipment intended for processing of oil & its derivatives for hydraulic & aerodynamic design of pipelines at steady & non-steady temperature as well as to find out heat exchange process characteristics etc. Additional input data besides temperature & pressure are density and/or fractional composition . The program calculates the percentage of liquid & gas phases density isobaric heat thermal conductivity vaporization enthalpy kinematic viscosity surface tension & the Prandtl number.