Thermo 006H Refrigeration
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Transcript of Thermo 006H Refrigeration
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2012 Aspen Technology, Inc. All rights reserved
Revised: November 26, 2012
Illustration of Refrigerationwith Aspen HYSYS
Using Aspen HYSYS V8.0
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Objectives
Learn how to specify compressors, heaters, and valvesin Aspen HYSYS.
Understand how a refrigeration cycle works.
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Background
Applications of refrigeration are almost everywhere (e.g., ACunits in cars, houses, buildings and other facilities).
Refrigeration is also frequently used in the refinery and
chemical industries.
Refrigeration needs in cryogenic processes are especiallychallenging to satisfy.
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Key Teaching Points
Heat is typically transferred from a high temperature mediumto a low temperature medium. With a refrigeration system,heat is pumped from a low temperature medium to a hightemperature medium.
The discharge pressure of the Compressor block is specified.
The compressed and cooled coolant expands adiabaticallythrough the Valve block to 1 bar. The expansion causes the
coolant to partially vaporize. The vaporization of a liquidtakes heat. If there is no external heat available, the heatwill come from the liquid itself by reducing its owntemperature.
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Recommended Further Exercises
Propane is a widely used medium for cooling systems inthe chemical industry. Use propane to create a similarrefrigeration cycle in Aspen HYSYS. Try to make thetemperature of the stream exiting the expansion valve aslow as possible.
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Copyright
Copyright 2012 by Aspen Technology, Inc. (AspenTech). Allrights reserved. This work may not be reproduced or distributedin any form or by any means without the prior written consent ofAspenTech. ASPENTECH MAKES NO WARRANTY ORREPRESENTATION, EITHER EXPRESSED OR IMPLIED, WITHRESPECT TO THIS WORK and assumes no liability for any errors or
omissions. In no event will AspenTech be liable to you fordamages, including any loss of profits, lost savings, or otherincidental or consequential damages arising out of the use of theinformation contained in, or the digital files supplied with or foruse with, this work. This work and its contents are provided foreducational purposes only.
AspenTech, aspenONE, and the Aspen leaf logo, aretrademarks of Aspen Technology, Inc.. Brands and product namesmentioned in this documentation are trademarks or service marksof their respective companies.
