Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger

Brian A. Fricke; Kashif Nawaz; Ahmed Elatar; Vishaldeep Sharma

doi:10.18462/iir.icr.2019.1598

Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger

Brian A. Fricke, Kashif Nawaz, Ahmed Elatar, Vishaldeep Sharma

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

Natural refrigerants such as carbon dioxide (R744) are gaining increased interest as industry searches for alternatives with minimal environmental impacts. However, R744-based systems have lower operating efficiencies as compared to hydrofluorocarbon-based systems, particularly in hot climates. Implementing pressure exchanger (PX) technology may enable R744 systems to operate over a broader range of operating temperatures. A PX consists of narrow longitudinal channels positioned radially around a rotating cylinder. High- and low-pressure fluids flow into the PX and exchange pressure, creating an intermediate-pressure flow. In this paper, the design of the PX will be discussed, and a model of the PX will be developed. Refrigeration system designs implementing the PX will be presented. It will be shown that the PX has the potential to boost the coefficient of performance (COP) of R744 systems by over 25% compared to standard transcritical R744 booster systems.

Original language	English
Title of host publication	ICR 2019 - 25th IIR International Congress of Refrigeration
Editors	Vasile Minea
Publisher	International Institute of Refrigeration
Pages	1775-1781
Number of pages	7
ISBN (Electronic)	9782362150357
DOIs	https://doi.org/10.18462/iir.icr.2019.1598
State	Published - 2019
Event	25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada Duration: Aug 24 2019 → Aug 30 2019

Publication series

Name	Refrigeration Science and Technology
Volume	2019-August
ISSN (Print)	0151-1637

Conference

Conference	25th IIR International Congress of Refrigeration, ICR 2019
Country/Territory	Canada
City	Montreal
Period	08/24/19 → 08/30/19

Funding

1 Notice: This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. This material is based upon work supported by the U.S. D Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (BTO). The authors wish to acknowledge Antonio Bouza, program manager, for funding and facilitating the project.

Funders	Funder number
U.S. Department of Energy
Office of Energy Efficiency and Renewable Energy
Building Technologies Office

Keywords

Carbon Dioxide (Refrigerant)
Commercial Refrigerator
Energy Efficiency
Pressure

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.18462/iir.icr.2019.1598

Cite this

Fricke, B. A., Nawaz, K., Elatar, A., & Sharma, V. (2019). Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger. In V. Minea (Ed.), ICR 2019 - 25th IIR International Congress of Refrigeration (pp. 1775-1781). Article 1598 (Refrigeration Science and Technology; Vol. 2019-August). International Institute of Refrigeration. https://doi.org/10.18462/iir.icr.2019.1598

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title = "Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger",

abstract = "Natural refrigerants such as carbon dioxide (R744) are gaining increased interest as industry searches for alternatives with minimal environmental impacts. However, R744-based systems have lower operating efficiencies as compared to hydrofluorocarbon-based systems, particularly in hot climates. Implementing pressure exchanger (PX) technology may enable R744 systems to operate over a broader range of operating temperatures. A PX consists of narrow longitudinal channels positioned radially around a rotating cylinder. High- and low-pressure fluids flow into the PX and exchange pressure, creating an intermediate-pressure flow. In this paper, the design of the PX will be discussed, and a model of the PX will be developed. Refrigeration system designs implementing the PX will be presented. It will be shown that the PX has the potential to boost the coefficient of performance (COP) of R744 systems by over 25% compared to standard transcritical R744 booster systems.",

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author = "Fricke, {Brian A.} and Kashif Nawaz and Ahmed Elatar and Vishaldeep Sharma",

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doi = "10.18462/iir.icr.2019.1598",

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Fricke, BA , Nawaz, K , Elatar, A & Sharma, V 2019, Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger. in V Minea (ed.), ICR 2019 - 25th IIR International Congress of Refrigeration., 1598, Refrigeration Science and Technology, vol. 2019-August, International Institute of Refrigeration, pp. 1775-1781, 25th IIR International Congress of Refrigeration, ICR 2019, Montreal, Canada, 08/24/19. https://doi.org/10.18462/iir.icr.2019.1598

Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger. / Fricke, Brian A.; Nawaz, Kashif ; Elatar, Ahmed et al.
ICR 2019 - 25th IIR International Congress of Refrigeration. ed. / Vasile Minea. International Institute of Refrigeration, 2019. p. 1775-1781 1598 (Refrigeration Science and Technology; Vol. 2019-August).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Fricke, Brian A.

AU - Nawaz, Kashif

AU - Elatar, Ahmed

AU - Sharma, Vishaldeep

PY - 2019

Y1 - 2019

N2 - Natural refrigerants such as carbon dioxide (R744) are gaining increased interest as industry searches for alternatives with minimal environmental impacts. However, R744-based systems have lower operating efficiencies as compared to hydrofluorocarbon-based systems, particularly in hot climates. Implementing pressure exchanger (PX) technology may enable R744 systems to operate over a broader range of operating temperatures. A PX consists of narrow longitudinal channels positioned radially around a rotating cylinder. High- and low-pressure fluids flow into the PX and exchange pressure, creating an intermediate-pressure flow. In this paper, the design of the PX will be discussed, and a model of the PX will be developed. Refrigeration system designs implementing the PX will be presented. It will be shown that the PX has the potential to boost the coefficient of performance (COP) of R744 systems by over 25% compared to standard transcritical R744 booster systems.

AB - Natural refrigerants such as carbon dioxide (R744) are gaining increased interest as industry searches for alternatives with minimal environmental impacts. However, R744-based systems have lower operating efficiencies as compared to hydrofluorocarbon-based systems, particularly in hot climates. Implementing pressure exchanger (PX) technology may enable R744 systems to operate over a broader range of operating temperatures. A PX consists of narrow longitudinal channels positioned radially around a rotating cylinder. High- and low-pressure fluids flow into the PX and exchange pressure, creating an intermediate-pressure flow. In this paper, the design of the PX will be discussed, and a model of the PX will be developed. Refrigeration system designs implementing the PX will be presented. It will be shown that the PX has the potential to boost the coefficient of performance (COP) of R744 systems by over 25% compared to standard transcritical R744 booster systems.

KW - Carbon Dioxide (Refrigerant)

KW - Commercial Refrigerator

KW - Energy Efficiency

KW - Pressure

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ER -

Increasing the efficiency of a carbon dioxide refrigeration system using a pressure exchanger

Abstract

Publication series

Conference

Funding

Keywords

UN SDGs

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