Analysis of the schematics of the compression heat-driven refrigeration machine with R744

Authors

  • Лариса Іванівна Морозюк V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026, Ukraine
  • Сергій Васильович Гайдук V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026, Ukraine
  • Богдан Геннадійович Грудка V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2016.59470

Keywords:

compressor heat-driven refrigeration machine, heat recovery, R744, thermodynamic analysis, exergy efficiency

Abstract

The classification group of heat-driven refrigeration machines includes compressor heat-driven refrigeration machines driven by a turbine that operates with the same refrigerant as the refrigeration machine.

Development of research of compressor heat-driven refrigeration machines is associated with the use of R744 (carbon dioxide) as a refrigerant. This, together with the design of new schemes and cycles and, consequently, the solution of energy saving and environmental security problems in refrigeration equipment has enhanced the utilization of heat of any temperature.

New scheme-cycle designs are developed based on heat recovery in direct and reverse refrigeration cycles by cross-flow heat exchange between flows in cycles. To estimate the energy perfection of the decisions made, modern methods of thermodynamic analysis, energy and exergy are applied, which provided a simultaneous solution of energy saving problems.

It is shown that the energy (exergy) efficiency depends on the combination of the machine scheme and the refrigerant parameters (pressure and temperature) in gas heaters, and its values are determined by the temperature level of heat utilized. The exergy analysis defined the impact of irreversible losses in each element on the overall system efficiency, revealed the most critical elements, which should be regarded in the design of heat-driven machines in question.

Author Biographies

Лариса Іванівна Морозюк, V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026

Doctor of Technical Science, Associate Professor

Department of refrigerators, and air conditioning installations.

Сергій Васильович Гайдук, V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026

PhD, assistant professor, head of the department laboratories

Богдан Геннадійович Грудка, V. S. Martynovsky Institute of Refrigeration Odessa National Academy of Food Technologies 1/3 Dvoryanskaya str., Odessa, Ukraine, 62026

Postgraduate student

Department of cryogenic technology

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Published

2016-02-07

How to Cite

Морозюк, Л. І., Гайдук, С. В., & Грудка, Б. Г. (2016). Analysis of the schematics of the compression heat-driven refrigeration machine with R744. Eastern-European Journal of Enterprise Technologies, 1(8(79), 29–39. https://doi.org/10.15587/1729-4061.2016.59470

Issue

Vol. 1 No. 8(79) (2016): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2016 Сергій Васильович Гайдук, Богдан Геннадійович Грудка, Лариса Іванівна Морозюк

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