| ALLOWED
CODES |
| ASME VIII division
1 |
(U.S.A.) |
| AD-MERKBLATT |
(Germany) |
| ISPESL - VSR |
(Italy) |
| BS5500 (App.G) |
(U.K.)
(partial - used for brackets check only) |
| TEMA |
(U.S.A.)
R, C, B classes raccomandations are applied when procedures are
not covered by Codes. |
EXCHANGERS TYPES
With reference to the TEMA nomenclature, the program MT-EXCH is able
to calculate exchangers including any allowed combination of the following
main components:
- Channel (A/B/N)
- Shell (E/F/G/H/J/K)
- Rear End (L/M/N/S/T/U)
Both Channel and Rear End can be conical.
| EXCHANGER COMPONENTS |
|
All components that are part of an exchanger are dimensioned
by the program:
- Welded Formed Heads (elliptical, spherical, torispherical)
- Flat Flanged Heads
- Shell Barrels
- Conical Sections
- Girth Flanges
- Tubesheets
- Expansion Joints
- Floating Head (flange and cover)
- Nozzles
SUPPORTS
- Saddles (for horizontal exchangers)
- Brackets (for vertical exchangers)
NOZZLES
- Nominal Diameters from 10 to 1500 mm (from 3/8" to 60")
- Automatic Selection of the construction material from pipe
or shell
- Automatic verification of the nozzle hole and reinforcement
calculatio
|
| DATA BANKS |
| |
The software package is based on
large, user modifiable, data banks: |
| Materials |
mechanical properties
of over 350 ASME/UNI/EUROMARK materials |
| Nozzles and Flanges |
(ASA, UNI) |
| Gaskets |
(ASME/VSR, AD-MERKBLATT) |
| ASME Charts for External
Pressure |
|
| Standard Supports |
Saddles, Brackets |
| Stiffening Rings |
AISC, EUROPEAN |
| BOLTS |
ANSI B18.22, UNI/ISO,
DIN 2510 |
| ANALYSIS CAPABILITIES |
Check
of stresses caused by internal pressure
All the exchanger components, shell and tubes sides, are dimensioned
for internal pressure and hydraulic test.
The components who are in contact with both fluids (shell and tube)
are automatically checked for pressure acting on the external side. |
Geometrical
Dimensioning of the Exchanger.
The program provides for a comprehensive geometrical dimensioning,
incuding all quotas, distances, and dimensions of each component
and of the exchanger as a whole.
Referencing to well defined and universally accepted constructive
Standards, included in MT-EXCH, the rated Setting Plan of the exchanger
is automatically produced. |
|
Weight Calculation.
The weight of each component is calculated and the following additional
items are provided:
- Empty weight of the exchanger
- Weight of the tubes bundle
- Weight of the exchanger full of water
|
Stability
check for loads caused by external pressure.
To contrast the external pressure the user can choice between stiffening
rings insertion, thickness increase or a combination of both. |
Stability
check against combination of different loads: Equipment weight,
wind loads, earthquake, user specified forces and/or moments. For
Wind and Hearthquake the user can choice between the following Codes:
| Wind
Codes |
Hearthquake
Codes |
| ANSI |
ANSI 1982 |
| ASCE 7-95 |
ASCE 7-95 |
| CNR 1982 |
CNR 1986 |
| CNR 1996 |
|
| NEIGE ET VENT |
PARASISMIQUE PS92 |
| BSI CP 3 |
UBC 1988 |
| UBC 1994 |
UBC 1994 |
| UBC 1997 |
UBC 1997 |
| The resultant
Force and Moment are applied to supports for allowing the
Stability Check and the calculation of loads acting on foundations. |
|
Supports positioning and stability check.
- Saddles The check is carried
out according to Zick method
- Brackets The check is carried
out according to Bijlaard/BS5500 method
|
| OUTPUTS |
| |
The results of exchanger calculation
consists of a tabular report, Exchanger Drawings, Bill of
Materials and the Audit Reports Book. |
| ASCII
Report |
All relevant data of the excanger
are printed out, including the results of numerical calculation
and geometrical dimensioning. |
| Bill
of Materials |
All components belonging to
the exchanger under design are summarized in a table with
dimensions, weights and number of items. The table can be
viewed on screen, printed or exported as Excel file for further
processing (Cost Estimates). |
| Drawings |
Drawings are automatically
generated by MT-EXCH in three A3 sheets (a fourth sheet is
added when cladding is provided on one or more components).
Details on each sheet are as follows: |
| |
1st Sheet - Tables related to:
- Design data
- Tube bundle data
- Weights and Loads
- Nozzles
- General Notes
- Reference Standards
- Revisions
- Material
|
| |
2nd Sheet
- Setting Plan and Nozzles Posizioning.
The drawing is scaled in order to show the relative dimensions
of the exchanger.The nozzles are shown both in longitudinal
and circumferential views. |
| |
3rd Sheet
- Constructive drawing and baffles positioning.
All the exchangers components are drawn with quotas and dimensions. |
| |
Drawings can be generated in english or italian language
(other languages using latin alphabet can be easily provided)
and it is possible to choice between the following system
of units:
- Metric
- English
- Internazional Standard (S.I.)
- User Defined
Drawings are produced in DXF format for easy importing
them in AUTOCAD, or in many other CAD programs which accept
this very popular standard, for further enhancements.
|
| Audit
Reports Book |
For all the exchanger components
datasheets including formulas and substitutions are shown
on the screen and can be printed or saved on a file.Datasheets
can be produced in English or Italian languages, selecting
S.I. or English system of measurement units. |
| IMPORTING THERMAL RATING
DATA |
The MT-EXCH
program allows the automatic importing of data coming from
the thermal rating of the exchanger, provided that such data
are organized in a Neutral File (ASCII format). The file has
to be generated by an external program before to start the
MT-EXCH program.
MT-Exchange have integration with CHEMCAD
THERM Heat Exchange Design Software for Thermal Design. |
|
|
