
2-18 Key HYSYS Objects
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2.4 Key HYSYS Objects
2.4.1 HYSYS Object Overview
There are over 340 automation objects exposed in HYSYS.
These objects collectively contain of over 5000 properties and
methods. One of the more time consuming and difficult tasks in
learning to use Automation objects is determining what objects
are available and how to get at a property of interest.
The following sub-sections are designed to explore key HYSYS
objects in more detail and hopefully provide the necessary
information required to access nearly any object, property, or
method in HYSYS. Because of the large number of key objects
and their attributes, the objects within HYSYS have been divided
in seven distinct categories. These object categories are:
Container Objects, Support Objects, Oil Objects, Basis Objects,
Stream Objects, Operation Objects, Extension Objects, and PFD
Objects.
2.4.2 Container Objects
This category refers to objects that house other objects or form
the basis from which a large number of objects are derived. For
instance, the Application object can contain several
SimulationCase objects. The SimulationCase object contains all
the remaining objects associated with that case. The flowsheet
object is a repository for all the streams and unit operations of
the case. The flowsheet can also contain another flowsheet,
Application or SimulationCase.
Application and SimulationCase
The Application object is the top most object in HYSYS and
represents the HYSYS program itself. From the Application
object, nearly all the objects listed in the HYSYS type library can
be accessed. The SimulationCase object is the starting object for
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