Part of CAPE-OPEN standard versions 1.0 and 1.1
The Physical Properties Data Bases interface specification describes an interface for connecting a data base with recorded physical property values and with model parameters to flowsheeting and other engineering programs.
This interface deals with physical property data at discrete values of the state variables (temperature,pressure, composition), as far as measured, correlated or estimated values are concerned. There are no access methods that deliver recorded thermophysical property values exactly at a given state. However, parameters of model equations are delivered that can be used for calculating data at any desired state.
This document is consistent with version 1.0 of the CAPE-OPEN Thermodynamic and Physical Properties interface specification.
Physical Properties Data Bases Interface Specification: current document released in August 2003 (PDF, 627 Kbytes).
Special mention: the current interface design is considered as too complex even if it was implemented by DECHEMA and DIPPR, A Tester for PPDB implementations has also been developed, at CO-LaN request, by ProSim. The Thermo Special Interest Group is in charge of maintaining this interface specification.