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FAQ:
In this section we answer questions regarding the
hiTRAN Design and Selection program.
If you have a question which you can not find in this area please
email:
This area is divided into the following sections:
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General questions
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Program specific
General Questions:
| Question: |
Is the program hiTRAN.SP free of charge and why?
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| Answer: |
hiTRAN.SP is freeware. Calculation results are a powerful tool to sell hiTRAN
matrix tube inserts. With more people using the
program and seeing hiTRAN's benefits, Cal Gavin should
see a demand in hiTRAN sales.
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| Question: |
Why does hiTRAN.SP have a limited expiry date?
What happens once the version expires? |
| Answer: |
In the future it is planned to update the
Software on a regular basis.
Updates are related to:
- More user-friendly interface,
design.
- Implementation of context sensitive
help functions
- Extension of the supported ranges
with respect to tube sizes, Re, Pr range
- Two phase flow applications....
In order to avoid users working with
different versions of hiTRAN.SP, Cal Gavin Ltd will send out
Software updates with the most recent code prior to Software
expiration free of charge.
The next Software expiry will be on
the 31.12.2004. Users will be notified before
the expiry date and a
renewed license with the updated hiTRAN.SP Software will be
issued free of charge.
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| Question: |
Do I get
notified when new updates / patches are available? |
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In case it is a
critical update, that means without this update the program
calculates the wrong results, each user will be notified. In
case it is a minor update please check frequently our
download / Patch section [click
here] |
| Question: |
Does the Software support two-phase applications
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| Answer: |
The most recent version hiTRAN.SP 1.1
only supports single phase flow applications.
HiTRAN Inserts are also successful when applied in;
- Thermosiphon and forced flow
reboilers
- Tube side vertical condensers (e.g.
reflux condensers)
- Falling Film Evaporators
- Reaction and mixing applications
Additional research is being carried
out to implement appropriate design functions for the
above mentioned applications in future releases of hiTRAN.SP
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| Question: |
What is the difference
between "Standalone mode" and "Interactive
mode"
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| Answer: |
In "Standalone
mode" only the tube side performance is calculated,
these calculations are carried without any other
software. Although data files from HTRI and HTFS/Aspentech
can be imported. In this mode the tube side heat transfer
and tube side pressure drop is calculated.
In "Interactive mode"
HTRI [XACE] and HTFS[ACOL] are running in the background.
This means changed tube side heat transfer coefficient and
bundle geometry are transferred to the commercial
applications running in the background. As an end result the
whole exchanger performance can be calculated.
See also:
Interactive mode
Standalone mode
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| Question: |
Which commercial heat exchanger design Software is supported |
| Answer: |
In so called
"Interactive
mode" the two following Software packages are supported:
A) The Simulation package Xace
from the HTRI Xchanger Suite 2.0 and later
© Heat Transfer Research, Inc. All rights reserved.
B) ACOL from Hyprotech
from Version 6.20 and later
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Programme specific
| Question: |
On the so called Calculation page the calculated plain tube
heat transfer coefficient appears to be quite low compared
to the one calculated with HTRI?
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| Answer: |
The underlying calculation for the plain tube are basic text
book calculations, not taking into account phenomena like
improved heat transfer due to differences in fluid density
across the tube cross section. Therefore in general the
predictions for the plain tube heat transfer are fairly
conservative.
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