TY - GEN
T1 - Implementation of a two-phase ejector cycle for R744 glass door merchandisers
AU - Lawrence, N.
AU - Elbel, S.
N1 - Publisher Copyright:
© 2016, International Institute of Refrigeration. All rights reserved.
PY - 2016
Y1 - 2016
N2 - Glass door merchandisers are used to display chilled beverages or refrigerated foods in grocery and convenience stores. Carbon dioxide (R744, CO2) is seen as a promising low global warming potential refrigerant alternative for this application that is non-flammable and non-toxic. In this present study, the performance of the R744 glass door merchandiser refrigeration system has been further improved by implementing a two-phase ejector cycle. Previous ejector studies have mainly focused on larger residential or automotive air-conditioning, heat pumping, and supermarket refrigeration applications; the implementation of an ejector in smaller systems presents challenges in terms of low-cost ejector design and simplified cycle control. Different ejector cycles are discussed to compare the advantages of each cycle when used in a smallscale system. A low-cost design has been devised and implemented. Performance of the improved system is compared against the baseline without ejector.
AB - Glass door merchandisers are used to display chilled beverages or refrigerated foods in grocery and convenience stores. Carbon dioxide (R744, CO2) is seen as a promising low global warming potential refrigerant alternative for this application that is non-flammable and non-toxic. In this present study, the performance of the R744 glass door merchandiser refrigeration system has been further improved by implementing a two-phase ejector cycle. Previous ejector studies have mainly focused on larger residential or automotive air-conditioning, heat pumping, and supermarket refrigeration applications; the implementation of an ejector in smaller systems presents challenges in terms of low-cost ejector design and simplified cycle control. Different ejector cycles are discussed to compare the advantages of each cycle when used in a smallscale system. A low-cost design has been devised and implemented. Performance of the improved system is compared against the baseline without ejector.
KW - Glass door merchandiser
KW - Light commercial refrigeration
KW - Low-cost miniature ejector
KW - Transcritical CO
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U2 - 10.18462/iir.gl.2016.1082
DO - 10.18462/iir.gl.2016.1082
M3 - Conference contribution
AN - SCOPUS:85017584596
T3 - Refrigeration Science and Technology
SP - 503
EP - 510
BT - 12th IIR Gustav Lorentzen Natural Working Fluids Conference, GL 2016
PB - International Institute of Refrigeration
T2 - 12th IIR Gustav Lorentzen Natural Working Fluids Conference, GL 2016
Y2 - 21 August 2016 through 24 August 2016
ER -