Aspen EDR For Rapid and Accurate Exchanger Design [PDF]

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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  13