Using Aspen EDR for Rapid and Accurate Exchanger Design An Introduction
Aspen EDR Introduction
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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Aspen EDR What we use it for
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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Benefits Key advantages of using EDR inside an Aspen Simulation
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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Aspen EDR How it fits into the simulation design work-flow
Process Design
Process Optimisation
Aspen EDR
Datasheet Generation
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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
Applications Aspen EDR can help design any heat exchanger
Phase Change:
Condensers
Evaporators
Reboilers
No Phase Change
Trim cooling
Pre-heating
Waste heat recovery
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Exchanger Types Aspen EDR can help design any heat exchanger
Shell & Tube (all TEMA types)
Reboilers
Kettle
Thermosyphon
Air coolers
Finned or bare tubes
Plate
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Example Sizing a shell & tube condenser
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Example Process Specifications
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Example Exchanger Geometry
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Example Design checking
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Final Thoughts Using Aspen EDR in design
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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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 Page
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