Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State
The shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equat...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-01-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1099-4300/20/2/93 |
| _version_ | 1818040027530133504 |
|---|---|
| author | Axel Groniewsky Attila R. Imre |
| author_facet | Axel Groniewsky Attila R. Imre |
| author_sort | Axel Groniewsky |
| collection | DOAJ |
| description | The shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equation of state. It is demonstrated that a limiting isochoric heat capacity might exist between dry and wet fluids. With the Redlich-Kwong equation of state, this limit can be predicted with good accuracy for several fluids, including alkanes. |
| first_indexed | 2024-12-10T08:08:00Z |
| format | Article |
| id | doaj.art-b3502e57230340b6a634a07d39c675b4 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-12-10T08:08:00Z |
| publishDate | 2018-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-b3502e57230340b6a634a07d39c675b42022-12-22T01:56:38ZengMDPI AGEntropy1099-43002018-01-012029310.3390/e20020093e20020093Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of StateAxel Groniewsky0Attila R. Imre1Department of Energy Engineering, Budapest University of Technology and Economics, Muegyetem rkp. 3, H-1111 Budapest, HungaryDepartment of Energy Engineering, Budapest University of Technology and Economics, Muegyetem rkp. 3, H-1111 Budapest, HungaryThe shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equation of state. It is demonstrated that a limiting isochoric heat capacity might exist between dry and wet fluids. With the Redlich-Kwong equation of state, this limit can be predicted with good accuracy for several fluids, including alkanes.http://www.mdpi.com/1099-4300/20/2/93Organic Rankine Cycleisochoric heat capacityvibrational degree of freedom |
| spellingShingle | Axel Groniewsky Attila R. Imre Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State Entropy Organic Rankine Cycle isochoric heat capacity vibrational degree of freedom |
| title | Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State |
| title_full | Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State |
| title_fullStr | Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State |
| title_full_unstemmed | Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State |
| title_short | Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State |
| title_sort | prediction of the orc working fluid s temperature entropy saturation boundary using redlich kwong equation of state |
| topic | Organic Rankine Cycle isochoric heat capacity vibrational degree of freedom |
| url | http://www.mdpi.com/1099-4300/20/2/93 |
| work_keys_str_mv | AT axelgroniewsky predictionoftheorcworkingfluidstemperatureentropysaturationboundaryusingredlichkwongequationofstate AT attilarimre predictionoftheorcworkingfluidstemperatureentropysaturationboundaryusingredlichkwongequationofstate |