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Combined cold supply system for ship application based on low GWP refrigerants - Thermo-economic and ecological analyses
Abstract
The withdrawal of popular high-GWP refrigerants will significantly affect maritime industry. Refrigeration and air conditioning systems currently used on ships are not ready to fulfil future limitations. Therefore, there is a need for system, which will operate with low-GWP refrigerants and at the same time will be efficient and reliable in difficult environmental conditions. This paper explains the concept of a cold supply system, in which refrigeration/freezing plant rejects heat not to a seawater but to a chilled water, produced by the air conditioning unit. Configuration of single stage compression with internal heat exchanger and HFO refrigerant was used in the air conditioning system, while in the refrigeration/freezing plant, two-stage compression trans-critical booster with R744 as refrigerant. Comparative thermodynamic analyses of presented concept with other configurations of thermodynamic cycles and refrigerants were performed. They were carried out in wide range of seawater temperature values and incorporated efficiency characteristics of compressors produced by a well-known manufacturers. Results confirmed ability of described system to improve energy efficiency in comparison with separated and currently used on ships cold supply systems, especially in hot climate. Economic and ecological analyses of proposed concept exhibited an additional benefit - positive environmental impact.
Citations
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0
Web of Science
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Authors (3)
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Elzbieta Fornalik-Wajs
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.enconman.2022.115518
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
ENERGY CONVERSION AND MANAGEMENT
no. 258,
ISSN: 0196-8904 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Wajs J., Mrózek M., Fornalik-Wajs E.: Combined cold supply system for ship application based on low GWP refrigerants - Thermo-economic and ecological analyses// ENERGY CONVERSION AND MANAGEMENT -Vol. 258, (2022), s.115518-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.enconman.2022.115518
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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