Novel design and energy analysis of hybrid system activated by low-grade thermal energy conversion.
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| Title: | Novel design and energy analysis of hybrid system activated by low-grade thermal energy conversion. |
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| Authors: | Maalem, Youcef1, Madani, Hakim2 h.madani@univ-batna2.dz |
| Source: | Archives of Thermodynamics. 2026, Vol. 47 Issue 1, p237-253. 17p. |
| Subjects: | Rankine cycle, Working fluids, Waste heat, Refrigeration & refrigerating machinery, Trigeneration (Energy), Thermodynamics |
| Abstract: | A novel power-cooling system triggered by low-grade thermal energy is proposed and studied in this paper. The power-cooling unit combined the engine (organic Rankine cycle) and cooler (ejector-expansion refrigeration cycle employing a booster). Both cycles employ isobutene (R600a) as a working fluid and share a single condenser unit. The performance characteristics (overall coefficient of performance and working fluid mass flow rate per kW of cooling capacity) of the novel unit was investigated using thermodynamic analysis in comparison to the traditional unit that is commonly used. The latter combines the engine (organic Rankine cycle) with the cooler (vapour compression refrigeration cycle) in various operational conditions, including exit temperatures of a boiler unit (60−90°C), a condenser unit (30−55°C) and an evaporator unit (15−15°C). It was discovered that in comparison to the traditional unit, the novel unit exhibited lower working fluid mass flow rate per kW of cooling capacity and higher overall coefficient of performance. The overall coefficients of performance for both systems increase by 0.5385 and 0.4476, respectively, when the boiler unit’s temperature reaches 90°C and the other input specifications are set to typical values. On the other hand, the working fluid mass flow rate per kW cooling capacity of both systems drops by 0.0096 and 0.0064, respectively. Overall, the study demonstrates that the novel system triggered by low-grade thermal energy can be an alternative to the traditional system. [ABSTRACT FROM AUTHOR] |
| Copyright of Archives of Thermodynamics is the property of Szewalski Institute of Fluid-Flow Machinery and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Novel design and energy analysis of hybrid system activated by low-grade thermal energy conversion. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Maalem%2C+Youcef%22">Maalem, Youcef</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Madani%2C+Hakim%22">Madani, Hakim</searchLink><relatesTo>2</relatesTo><i> h.madani@univ-batna2.dz</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Archives+of+Thermodynamics%22">Archives of Thermodynamics</searchLink>. 2026, Vol. 47 Issue 1, p237-253. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Rankine+cycle%22">Rankine cycle</searchLink><br /><searchLink fieldCode="DE" term="%22Working+fluids%22">Working fluids</searchLink><br /><searchLink fieldCode="DE" term="%22Waste+heat%22">Waste heat</searchLink><br /><searchLink fieldCode="DE" term="%22Refrigeration+%26+refrigerating+machinery%22">Refrigeration & refrigerating machinery</searchLink><br /><searchLink fieldCode="DE" term="%22Trigeneration+%28Energy%29%22">Trigeneration (Energy)</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamics%22">Thermodynamics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A novel power-cooling system triggered by low-grade thermal energy is proposed and studied in this paper. The power-cooling unit combined the engine (organic Rankine cycle) and cooler (ejector-expansion refrigeration cycle employing a booster). Both cycles employ isobutene (R600a) as a working fluid and share a single condenser unit. The performance characteristics (overall coefficient of performance and working fluid mass flow rate per kW of cooling capacity) of the novel unit was investigated using thermodynamic analysis in comparison to the traditional unit that is commonly used. The latter combines the engine (organic Rankine cycle) with the cooler (vapour compression refrigeration cycle) in various operational conditions, including exit temperatures of a boiler unit (60−90°C), a condenser unit (30−55°C) and an evaporator unit (15−15°C). It was discovered that in comparison to the traditional unit, the novel unit exhibited lower working fluid mass flow rate per kW of cooling capacity and higher overall coefficient of performance. The overall coefficients of performance for both systems increase by 0.5385 and 0.4476, respectively, when the boiler unit’s temperature reaches 90°C and the other input specifications are set to typical values. On the other hand, the working fluid mass flow rate per kW cooling capacity of both systems drops by 0.0096 and 0.0064, respectively. Overall, the study demonstrates that the novel system triggered by low-grade thermal energy can be an alternative to the traditional system. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Archives of Thermodynamics is the property of Szewalski Institute of Fluid-Flow Machinery and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.24425/ather.2026.158673 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 237 Subjects: – SubjectFull: Rankine cycle Type: general – SubjectFull: Working fluids Type: general – SubjectFull: Waste heat Type: general – SubjectFull: Refrigeration & refrigerating machinery Type: general – SubjectFull: Trigeneration (Energy) Type: general – SubjectFull: Thermodynamics Type: general Titles: – TitleFull: Novel design and energy analysis of hybrid system activated by low-grade thermal energy conversion. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Maalem, Youcef – PersonEntity: Name: NameFull: Madani, Hakim IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 12310956 Numbering: – Type: volume Value: 47 – Type: issue Value: 1 Titles: – TitleFull: Archives of Thermodynamics Type: main |
| ResultId | 1 |
