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Title:Modeling and Comparison of Primary and Secondary Refrigeration System Performance
Author(s):Wood, Adam Christopher
Contributor(s):Hrnjak, Predrag S.; Thurston, Deborah L.
Subject(s):primary refrigeration systems
secondary refrigeration systems
supermarket refrigeration systems
Abstract:Due to recent regulations concerning several fluids used in conventional supermarket refrigeration systems, the supermarket industry is investigating the use of secondary refrigeration systems. Because secondary systems have only recently received attention in the United States, the performance of secondary systems and the various fluids available for use within the systems is not known in detail. Computer models were created to predict the performance of both conventional primary refrigeration systems and secondary refrigeration systems. Experimental data from the Commercial Refrigeration Laboratory at the University of Illinois was used to verify the accuracy of the primary refrigeration model. Using the secondary refrigeration system model, the performance of five potential secondary refrigerants were compared. The coefficients of performance for the five fluids varied between approximately 1.4 and 1.8. This preliminary comparison was conducted using the same heat exchanger design which was not optimized for the fluids, so the performance of the fluids in an optimized system will be higher. In addition, a multiattribute utility analysis was conducted to compare a conventional primary refrigeration system to a secondary refrigeration system. Using installation costs, operating costs, and environmental impacts as attributes, the secondary refrigeration system was shown to be comparable to or even preferable to the primary refrigeration system for a number of assumed decision maker profiles.
Issue Date:1996-09
Publisher:Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Air Conditioning and Refrigeration Center CR-07
Genre:Technical Report
dataset / spreadsheet
Date Available in IDEALS:2009-07-27
Identifier in Online Catalog:4042066

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