Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles
Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the O...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wang, Jingtao [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2012 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media, LLC 2012 |
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| Übergeordnetes Werk: |
Enthalten in: International journal of thermophysics - Springer US, 1980, 33(2012), 6 vom: 28. Apr., Seite 970-985 |
|---|---|
| Übergeordnetes Werk: |
volume:33 ; year:2012 ; number:6 ; day:28 ; month:04 ; pages:970-985 |
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| DOI / URN: |
10.1007/s10765-012-1200-6 |
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OLC2076475885 |
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| 520 | |a Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. | ||
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10.1007/s10765-012-1200-6 doi (DE-627)OLC2076475885 (DE-He213)s10765-012-1200-6-p DE-627 ger DE-627 rakwb eng 530 VZ Wang, Jingtao verfasserin aut Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC 2012 Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. Molecular design Molecular entropy Organic Rankine cycle Working fluids Zhang, Jin aut Chen, Zhiyou aut Enthalten in International journal of thermophysics Springer US, 1980 33(2012), 6 vom: 28. Apr., Seite 970-985 (DE-627)130512540 (DE-600)764389-5 (DE-576)016085965 0195-928X nnns volume:33 year:2012 number:6 day:28 month:04 pages:970-985 https://doi.org/10.1007/s10765-012-1200-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_4012 GBV_ILN_4700 AR 33 2012 6 28 04 970-985 |
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10.1007/s10765-012-1200-6 doi (DE-627)OLC2076475885 (DE-He213)s10765-012-1200-6-p DE-627 ger DE-627 rakwb eng 530 VZ Wang, Jingtao verfasserin aut Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC 2012 Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. Molecular design Molecular entropy Organic Rankine cycle Working fluids Zhang, Jin aut Chen, Zhiyou aut Enthalten in International journal of thermophysics Springer US, 1980 33(2012), 6 vom: 28. Apr., Seite 970-985 (DE-627)130512540 (DE-600)764389-5 (DE-576)016085965 0195-928X nnns volume:33 year:2012 number:6 day:28 month:04 pages:970-985 https://doi.org/10.1007/s10765-012-1200-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_4012 GBV_ILN_4700 AR 33 2012 6 28 04 970-985 |
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10.1007/s10765-012-1200-6 doi (DE-627)OLC2076475885 (DE-He213)s10765-012-1200-6-p DE-627 ger DE-627 rakwb eng 530 VZ Wang, Jingtao verfasserin aut Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC 2012 Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. Molecular design Molecular entropy Organic Rankine cycle Working fluids Zhang, Jin aut Chen, Zhiyou aut Enthalten in International journal of thermophysics Springer US, 1980 33(2012), 6 vom: 28. Apr., Seite 970-985 (DE-627)130512540 (DE-600)764389-5 (DE-576)016085965 0195-928X nnns volume:33 year:2012 number:6 day:28 month:04 pages:970-985 https://doi.org/10.1007/s10765-012-1200-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_4012 GBV_ILN_4700 AR 33 2012 6 28 04 970-985 |
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10.1007/s10765-012-1200-6 doi (DE-627)OLC2076475885 (DE-He213)s10765-012-1200-6-p DE-627 ger DE-627 rakwb eng 530 VZ Wang, Jingtao verfasserin aut Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC 2012 Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. Molecular design Molecular entropy Organic Rankine cycle Working fluids Zhang, Jin aut Chen, Zhiyou aut Enthalten in International journal of thermophysics Springer US, 1980 33(2012), 6 vom: 28. Apr., Seite 970-985 (DE-627)130512540 (DE-600)764389-5 (DE-576)016085965 0195-928X nnns volume:33 year:2012 number:6 day:28 month:04 pages:970-985 https://doi.org/10.1007/s10765-012-1200-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_4012 GBV_ILN_4700 AR 33 2012 6 28 04 970-985 |
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10.1007/s10765-012-1200-6 doi (DE-627)OLC2076475885 (DE-He213)s10765-012-1200-6-p DE-627 ger DE-627 rakwb eng 530 VZ Wang, Jingtao verfasserin aut Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles 2012 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC 2012 Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. Molecular design Molecular entropy Organic Rankine cycle Working fluids Zhang, Jin aut Chen, Zhiyou aut Enthalten in International journal of thermophysics Springer US, 1980 33(2012), 6 vom: 28. Apr., Seite 970-985 (DE-627)130512540 (DE-600)764389-5 (DE-576)016085965 0195-928X nnns volume:33 year:2012 number:6 day:28 month:04 pages:970-985 https://doi.org/10.1007/s10765-012-1200-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_4012 GBV_ILN_4700 AR 33 2012 6 28 04 970-985 |
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Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. © Springer Science+Business Media, LLC 2012 |
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Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. © Springer Science+Business Media, LLC 2012 |
| abstract_unstemmed |
Abstract A shortage of fossil energy sources boosts the utilization of renewable energy. Among numerous novel techniques, recovering energy from low-grade heat sources through power generation via organic Rankine cycles (ORCs) is one of the focuses. Properties of working fluids are crucial for the ORC’s performance. Many studies have been done to select proper working fluids or to design new working fluids. However, no researcher has systematically investigated the relationship between molecular structures and thermal efficiencies of various working fluids for an ideal ORC. This paper has investigated the interrelations of molecular structures, molecular entropies, and thermal efficiencies of various working fluids for an ideal ORC. By calculating thermal efficiencies and molecular entropies, we find that the molecular entropy is the most appropriate thermophysical property of a working fluid to determine how much energy can be converted into work and how much cannot in a system. Generally speaking, working fluids with low entropies will generally have high thermal efficiency for an ideal ORC. Based on this understanding, the direct interrelations of molecular structures and entropies provide an explicit interrelation between molecular structures and thermal efficiencies, and thus provide an insightful direction for molecular design of novel working fluids for ORCs. © Springer Science+Business Media, LLC 2012 |
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Molecular Entropy, Thermal Efficiency, and Designing of Working Fluids for Organic Rankine Cycles |
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