TEMA/ASME Exchanger
two companion programs for COMPRESS
TEMA Exchanger and ASME Exchanger design heat exchangers according to 7th and 8th Editions of the
TEMA Standard and according to the most recent ASME Section VIII Codes. Starting with the A03 Addenda, the non-mandatory Appendix AA provisions have been replaced by the new mandatory UHX rules. All
types are considered except floating heads, coming in the near future. The Exchanger programs require
COMPRESS to operate. There is also a link to our Tube Layout Program that automatically imports necessary data to facilitate the design.
Exchanger programs are wizard-driven, meaning that you design the entire heat exchanger all at one time
with a lot of assistance from the program using user-defined defaults. This makes the design look easy, but
rigorous calculation according to TEMA and ASME rules is done behind the scenes to create this illusion. The
bottom line is that you can design heat exchangers rigorously with very little effort, cost effectively.
TEMA and ASME Exchangers calculate the governing required tubesheet
thickness for up to 8 separate loading cases any of which can be
designated as a differential pressure case. Flange loads for those cases
where the tubesheet is extended as a flange are considered.
Detailed ASME calculations are provided for all components and
include all the TEMA specified modifications including:
• Appendix 2 flanges load correction factor per RCB-11.23 and increased
gasket loads from pass partition plates from RGP-RCB-11.7.
• Deflection of channel covers (flat heads) having pass partition plates
per RCB-9.21.
• Tube to tubesheet joint loads per RCB-7.25 and ASME Appendix A-2.
• Shell and tube longitudinal stresses per RCB-7.2
• Fixed tubesheets of differing thickness method from RCB-7.166
• Pass partition plate required thickness per RCB-9.132.
• ASME tube design to check for excessive external pressure on the
tubes.
You can perform calculations for TEMA and ASME tubesheets simultaneously
and compare the results to find the most economical design.
The Wizard feature lets you design a heat exchanger by supplying a minimum amount of
information. Program defaults supply the details.
You design the entire exchanger all at once, not
one component after another.
The same degree of printing control is provided as in COMPRESS: you can print a full or partial report
directly or save to file as a self-expanding set of HTML files or, if you have Adobe Acrobat, as a pdf document.
The output report is presented in a novel
format which shows the calculation
method and equations used, with results,
but excludes non-limiting calculations in
order to reduce report size. For example:
Flanged and flued expansion joints are analyzed in depth.
Expansion joint spring rate calculation per RCB-8.3 through
RCB-8.6 is included as is the stress analysis of RCB-8.81 and
RCB-8.82. Stresses are classified as primary or secondary.
Stresses exceeding allowable limits are reported. User specified (purchased) expansion joints can also be specified. An
optional ASME Appendix CC cycle life calculation is provided.
Both TEMA and ASME material
properties sources are provided,
including coefficient of thermal
expansion, elastic modulus
allowable stress etc. User defined
inputs also are permitted.
Optional Tube
Layout Program is
now available!
Discount given if
purchased together
with Exchanger.
So how do I run the demo?
Install the COMPRESS demo. Then
choose File/New Heat Exchanger.
11221 Richmond Ave Ste C-103
Houston, Texas 77082
Ph 281-497-5705, FAX 281-497-5839
sales@codeware.com
www.codeware.com