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Using Aspen EDR for Rapid and Accurate Exchanger DesignAn Introduction
Aspen EDR
Aspen EDR (Exchanger Design & Rating) is an extension of Aspen
Plus and HYSYS for performing heat exchanger sizing from within an
Aspen simulation
Uses standard heat exchanger sizing equations
As part of the Aspen package, it uses Aspen Properties to calculate
all fluid properties and heat transfer coefficients
Equivalent to Pro/II-HTRI extension (which we also use)
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Introduction
Aspen EDR
Full exchanger design and specification to match design
requirements, including geometry, pressure drop, vibration analysis
Rate existing equipment by inputting the design geometry – test the
limits of equipment offline
Predict performance where operating data is missing or
instrumentation lacking – fill in the blanks when evaluating a
process
Anticipate maintenance requirements by predicting performance
with different levels of fouling
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What we use it for
Benefits
Because it is integrated into a process simulation, heat exchanger
design is completely linked to process design – if you change the
process, you re-design the heat exchangers
Avoids oversimplification of calculations – by using the rigorous
thermodynamic calculations available to Aspen products
Sensitivity studies
Datasheet generation
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Key advantages of using EDR inside an Aspen Simulation
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Aspen EDR
Process
Design
Process
Optimisation
Aspen
EDR
Datasheet
Generation
Major optioneering desions, making sure process works
Initial mass and energy balance
Refining design to obtain maximum return
Simple heat exchangers, developing process specifications
Rigorous sizing of exchangers
Rating against multiple design points
Full simulation report on all equipment
Detailed specification sheets from EDR
How it fits into the simulation design work-flow
Applications
Phase Change:
Condensers
Evaporators
Reboilers
No Phase Change
Trim cooling
Pre-heating
Waste heat recovery
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Aspen EDR can help design any heat exchanger
Exchanger Types
Shell & Tube (all TEMA types)
Reboilers
Kettle
Thermosyphon
Air coolers
Finned or bare tubes
Plate
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Aspen EDR can help design any heat exchanger
Example
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Sizing a shell & tube condenser
Example
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Process Specifications
Example
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Exchanger Geometry
Example
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Design checking
Final Thoughts
EDR does not replace quality engineers – it enhances what they can
achieve
Engineers don’t need to spend their hours on time-consuming
calculation and datasheets
Provides a clear, visual tool for rapidly reviewing design options
Instant cost estimation assists decision making
Automatic check for simple design mistakes avoids common pitfalls
that are easily overlooked
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Using Aspen EDR in design
Contact Us
If there’s anything we can help you with, please don’t hesitate to
contact us.
Flexible Process Consultants Ltd.
130 Aztec
Aztec West
Bristol
BS32 4UB
UK
Website: http://flexprocess.co.uk
Email: [email protected]
Telephone: +44 (0) 1454 629 689
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