ChemApp "light" README
on the usage of ChemApp light with Aspen Plus (V11.1
SP1 and up)®
These release notes contain information on
- how to install ChemApp,
- how to use ChemApp light with Aspen Plus (V11.1 SP1 and
- notes for users of ChemSage V3.x,
- how to sign up for e-mail support,
- how to report a problem or bug,
- how to join our GTT-News newsletter mailing list,
- and how to contact us.
Please read this file and the file
before using ChemApp, and feel free to contact us any time if you need
any further information.
You should also take a look at the ChemApp FAQ, which
FAQ . It answers a lot of standard questions about ChemApp and
ChemApp light and should especially be consulted before contacting
Another must read for ChemApp developers is the chapter ChemApp
best practises in the ChemApp Programmer's Manual (added for
Edition 3.6). Before you contact our support with specific questions
relating to your code, please make sure your code implements the ChemApp
- To install your version of ChemApp light, simply run the
setup program. In case you downloaded ChemApp light from
our web site, the setup program might be zipped. In this case, unzip
the ZIP file to a temporary directory and execute the resulting setup
A corresponding un-installation program will also be set up, in
case you want to remove ChemApp light again later.
The installation program will put the ChemApp DLL(s) not only
in the user-defined directory you specify during installation, but
also into the Windows system directory, in order to make it available
to your applications during compile- and run-time.
- This version of ChemApp is for use with Aspen Plus (V11.1 SP1 and
up) and is a 32 bit DLL for use under Windows 95, Windows 98, Windows
ME, Windows NT, Windows 2000, and Windows XP® on Intel®
x86 and compatible processors.
This distribution of ChemApp for Aspen Plus (V11.1 SP1 and up)
contains one ChemApp DLL (chemapp.dll), which is the "light" version
of ChemApp for Aspen Plus (V11.1 SP1 and up). The installation program
copies this file both to your Windows' system directory, as well
as to the installation directory.
To be able to use ChemApp light with Aspen Plus (V11.1
SP1 and up), the following steps are necessary:
- Aspen Plus needs to be installed on the same computer. The
minimum version of Aspen Plus required is V11.1 SP1, earlier versions
are NOT supported.
- From the Aspen Tech support web site at http://support.aspentech.com/,
download the most recent cumulative hotfix for the Aspen Plus/FactSage/ChemApp
interface. Carefully follow the installation instructions included
with the hotfix.
- On the Aspen Tech support web site at http://support.aspentech.com/,
look for the TechTip on the Aspen Plus/FactSage/ChemApp interface
pbznlite.bkp. This is a short flowsheet
example that works with ChemApp light.
- Start the Aspen Plus GUI with a blank simulation. Open the
help system ("Help|HelpTopics") and read the topics under Using
FACT and ChemApp with Aspen Plus.
- In particular, consult the topic Configuring Aspen Plus
to Use the Aspen/FACT/ChemApp interface. Carefully follow
the instructions in the sections Adding the ChemApp model
to the Model Library, Testing the Aspen/FACT/ChemApp
interface, and optionally Troubleshooting simulations
with the Aspen/FACT/ChemApp interface.
- You should now be able to load
run the simulation.
- Note for users of ChemSage V3.x: If you are still using ChemSage
V3.x and would like to continue using your existing thermochemical
data-files with ChemApp, you will need to convert them to the ChemSage
4.x/ChemApp format with a program called ChemFile. This program can
be obtained from GTT-Technologies upon request, in case it is not
included in this distribution of ChemApp. Note that users of ChemSage
V4.x, FactSage, and earlier versions of ChemApp do not need to convert
- To receive limited e-mail support for ChemApp light, please
register your copy of ChemApp light. Registration is free
and can be done in any of the following ways:
- Use the online registration form on our web site: register.
- Fill out the form in the file
that comes with this distribution using an ASCII editor. Send
it by e-mail to firstname.lastname@example.org
- Print out the file
fill it out and fax it to GTT-Technologies: +49-2407-59661
- We have installed a bug tracking system for ChemApp that allows
us to handle bug and problem reports in a quick and flexible fashion.
If you have a programming problem with ChemApp that you suspect might
be a bug, please use the Bug Report Form at
Bug Report Form
There is also a link to this page from the ChemApp web page.
If you don't have access to the World Wide Web, you can submit
your bug reports by e-mail to ChemAppemail@example.com.
We prefer the submission of bug reports via the web page though,
since filling in the Bug Report Form makes sure we have important
information like the ChemApp version number etc. we need to reproduce
your problem already.
If you have any other general or support questions about ChemApp,
there is always our support e-mail address: firstname.lastname@example.org.
- Join our GTT-News newsletter mailing list: This newsletter is distributed
mainly electronically by e-mail, and also posted to our web site (http://www.gtt-technologies.de/).
It contains announcements of new versions of our various software
programs, information on new features and enhancements, ongoing projects,
new thermochemical data, additions to our web site, seminars, publications,
and various other topics. To join, check the GTT-News section on our
web site for instructions, or send an e-mail to Majordomo@gtt-technologies.de
with the line
in the mail body.
- An up-to-date source of information on ChemApp, its applications,
and related topics is "GTT's Technical Thermochemistry Web Page":
We would like to include a brief description of your
projects involving ChemApp on this World Wide Web page too. Please
contact Dr. Stephan Petersen (email@example.com) for details.