Criteria for selection of working fluid in low-temperature ORC
The economics of an ORC system is strictly linked to thermodynamic properties of the working fluid. A bad choice of working fluid could lead to a less efficient and expensive plant/generation unit. Some selection criteria have been put forward by various authors, incorporating thermodynamic properti...
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Polish Academy of Sciences Committee of Chemical and Process Engineering
2016-09-01
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| Series: | Chemical and Process Engineering |
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| Online Access: | http://www.degruyter.com/view/j/cpe.2016.37.issue-3/cpe-2016-0035/cpe-2016-0035.xml?format=INT |
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| _version_ | 1850259795484868608 |
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| author | Mikielewicz Dariusz Mikielewicz Jarosław |
| author_facet | Mikielewicz Dariusz Mikielewicz Jarosław |
| author_sort | Mikielewicz Dariusz |
| collection | DOAJ |
| description | The economics of an ORC system is strictly linked to thermodynamic properties of the working fluid. A bad choice of working fluid could lead to a less efficient and expensive plant/generation unit. Some selection criteria have been put forward by various authors, incorporating thermodynamic properties, provided in literature but these do not have a general character. In the paper a simple analysis has been carried out which resulted in development of thermodynamic criteria for selection of an appropriate working fluid for subcritical and supercritical cycles. The postulated criteria are expressed in terms of non-dimensional numbers, which are characteristic for different fluids. The efficiency of the cycle is in a close relation to these numbers. The criteria are suitable for initial fluid selection. Such criteria should be used with other ones related to environmental impact, economy, system size, etc. Examples of such criteria have been also presented which may be helpful in rating of heat exchangers, which takes into account both heat transfer and flow resistance of the working fluid. |
| format | Article |
| id | doaj-art-9c0aade661be45ed9485eb0a8ed37392 |
| institution | OA Journals |
| issn | 2300-1925 |
| language | English |
| publishDate | 2016-09-01 |
| publisher | Polish Academy of Sciences Committee of Chemical and Process Engineering |
| record_format | Article |
| series | Chemical and Process Engineering |
| spelling | doaj-art-9c0aade661be45ed9485eb0a8ed373922025-08-20T01:55:48ZengPolish Academy of Sciences Committee of Chemical and Process EngineeringChemical and Process Engineering2300-19252016-09-0137342944010.1515/cpe-2016-0035cpe-2016-0035Criteria for selection of working fluid in low-temperature ORCMikielewicz Dariusz0Mikielewicz Jarosław1Gdansk University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdansk, PolandThe Szewalski Institute of Fluid-Flow Machinery PAS, Fiszera 14, 80-231 GdanskThe economics of an ORC system is strictly linked to thermodynamic properties of the working fluid. A bad choice of working fluid could lead to a less efficient and expensive plant/generation unit. Some selection criteria have been put forward by various authors, incorporating thermodynamic properties, provided in literature but these do not have a general character. In the paper a simple analysis has been carried out which resulted in development of thermodynamic criteria for selection of an appropriate working fluid for subcritical and supercritical cycles. The postulated criteria are expressed in terms of non-dimensional numbers, which are characteristic for different fluids. The efficiency of the cycle is in a close relation to these numbers. The criteria are suitable for initial fluid selection. Such criteria should be used with other ones related to environmental impact, economy, system size, etc. Examples of such criteria have been also presented which may be helpful in rating of heat exchangers, which takes into account both heat transfer and flow resistance of the working fluid.http://www.degruyter.com/view/j/cpe.2016.37.issue-3/cpe-2016-0035/cpe-2016-0035.xml?format=INTmicro CHPorganic Rankine cycle |
| spellingShingle | Mikielewicz Dariusz Mikielewicz Jarosław Criteria for selection of working fluid in low-temperature ORC Chemical and Process Engineering micro CHP organic Rankine cycle |
| title | Criteria for selection of working fluid in low-temperature ORC |
| title_full | Criteria for selection of working fluid in low-temperature ORC |
| title_fullStr | Criteria for selection of working fluid in low-temperature ORC |
| title_full_unstemmed | Criteria for selection of working fluid in low-temperature ORC |
| title_short | Criteria for selection of working fluid in low-temperature ORC |
| title_sort | criteria for selection of working fluid in low temperature orc |
| topic | micro CHP organic Rankine cycle |
| url | http://www.degruyter.com/view/j/cpe.2016.37.issue-3/cpe-2016-0035/cpe-2016-0035.xml?format=INT |
| work_keys_str_mv | AT mikielewiczdariusz criteriaforselectionofworkingfluidinlowtemperatureorc AT mikielewiczjarosław criteriaforselectionofworkingfluidinlowtemperatureorc |