Energy efficiency for the transcritical compression CO2 cycle with the use of the ejector as the first stage of the compression

Joachim Kozioł; Wiesław Gazda; Łukasz Wilzynski

doi:10.2478/v10173-010-0028-3

Energy efficiency for the transcritical compression CO₂ cycle with the use of the ejector as the first stage of the compression

Joachim Kozioł
, Wiesław Gazda
, Łukasz Wilzynski

Department of Thermal Technology (RIE/RIE6)

Silesian University of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

An analysis of energy efficiency for transcritical compression unit with CO₂ (R744) as the refrigerant has been carried out using empirical operating characteristics for the two-phase ejector. The first stage of the refrigerant compression is carried out in the ejector. The criterion adopted for the estimation of energy efficiency for the cycle is the coefficient of performance COP. The analysis is performed for the heat pump and refrigeration systems. The results of COP for the systems with the ejector has been compared with the COP_L values for the single stage Linde cycle.

Original language	English
Pages (from-to)	61-69
Number of pages	9
Journal	Archives of Thermodynamics
Volume	31
Issue number	4
DOIs	https://doi.org/10.2478/v10173-010-0028-3
Publication status	Published - 2010

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Ejector
Energy efficiency

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.2478/v10173-010-0028-3

Cite this

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abstract = "An analysis of energy efficiency for transcritical compression unit with CO2 (R744) as the refrigerant has been carried out using empirical operating characteristics for the two-phase ejector. The first stage of the refrigerant compression is carried out in the ejector. The criterion adopted for the estimation of energy efficiency for the cycle is the coefficient of performance COP. The analysis is performed for the heat pump and refrigeration systems. The results of COP for the systems with the ejector has been compared with the COPL values for the single stage Linde cycle.",

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N2 - An analysis of energy efficiency for transcritical compression unit with CO2 (R744) as the refrigerant has been carried out using empirical operating characteristics for the two-phase ejector. The first stage of the refrigerant compression is carried out in the ejector. The criterion adopted for the estimation of energy efficiency for the cycle is the coefficient of performance COP. The analysis is performed for the heat pump and refrigeration systems. The results of COP for the systems with the ejector has been compared with the COPL values for the single stage Linde cycle.

AB - An analysis of energy efficiency for transcritical compression unit with CO2 (R744) as the refrigerant has been carried out using empirical operating characteristics for the two-phase ejector. The first stage of the refrigerant compression is carried out in the ejector. The criterion adopted for the estimation of energy efficiency for the cycle is the coefficient of performance COP. The analysis is performed for the heat pump and refrigeration systems. The results of COP for the systems with the ejector has been compared with the COPL values for the single stage Linde cycle.

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KW - Energy efficiency

UR - https://www.scopus.com/pages/publications/78149372655

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