CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application
A heat pipe is an energy-efficient heat transfer device that relies on evaporation and condensation processes for energy transfer. The main purpose of this study is to simulate a two-phase closed thermosyphon, at moderate temperature, that can be used in industrial applications such as steam power p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/23/8955 |
| _version_ | 1827643246725038080 |
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| author | Kaveh Sadeghi Mostafa Kahani Mohammad Hossein Ahmadi Mohammad Zamen |
| author_facet | Kaveh Sadeghi Mostafa Kahani Mohammad Hossein Ahmadi Mohammad Zamen |
| author_sort | Kaveh Sadeghi |
| collection | DOAJ |
| description | A heat pipe is an energy-efficient heat transfer device that relies on evaporation and condensation processes for energy transfer. The main purpose of this study is to simulate a two-phase closed thermosyphon, at moderate temperature, that can be used in industrial applications such as steam power plants. After creating a computational network in the Gambit software, the thermosyphon is simulated in Fluent software using the VOF model. Special oil is employed as the working fluid. Based on the CFD results, the efficiency of the system reaches approximately 96%, and the thermal resistance decreases to 0.54 K/W. The contours of the boiling and evaporation process at differing filling ratios, ranging between 30–90%, is visually investigated and the best performance is obtained for 30% of the filling ratio in thermosyphon. At higher filling ratios, more giant bubbles are generated in thermosyphon, which can attach to the inner wall of the system and reduce the thermal performance. The steady-state condition is obtained 84 s after the start of the process. |
| first_indexed | 2024-03-09T17:49:49Z |
| format | Article |
| id | doaj.art-caee3f1ee7e1406f9b528cc470431618 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T17:49:49Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-caee3f1ee7e1406f9b528cc4704316182023-11-24T10:52:59ZengMDPI AGEnergies1996-10732022-11-011523895510.3390/en15238955CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature ApplicationKaveh Sadeghi0Mostafa Kahani1Mohammad Hossein Ahmadi2Mohammad Zamen3Faculty of Mechanical and Mechatronic Engineering, Shahrood University of Technology, Shahrood 36199-95161, IranFaculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood 36199-95161, IranFaculty of Mechanical and Mechatronic Engineering, Shahrood University of Technology, Shahrood 36199-95161, IranFaculty of Mechanical and Mechatronic Engineering, Shahrood University of Technology, Shahrood 36199-95161, IranA heat pipe is an energy-efficient heat transfer device that relies on evaporation and condensation processes for energy transfer. The main purpose of this study is to simulate a two-phase closed thermosyphon, at moderate temperature, that can be used in industrial applications such as steam power plants. After creating a computational network in the Gambit software, the thermosyphon is simulated in Fluent software using the VOF model. Special oil is employed as the working fluid. Based on the CFD results, the efficiency of the system reaches approximately 96%, and the thermal resistance decreases to 0.54 K/W. The contours of the boiling and evaporation process at differing filling ratios, ranging between 30–90%, is visually investigated and the best performance is obtained for 30% of the filling ratio in thermosyphon. At higher filling ratios, more giant bubbles are generated in thermosyphon, which can attach to the inner wall of the system and reduce the thermal performance. The steady-state condition is obtained 84 s after the start of the process.https://www.mdpi.com/1996-1073/15/23/8955two-phase closed thermosyphonCFD analysisvisualizationfilling ratiothermal resistance |
| spellingShingle | Kaveh Sadeghi Mostafa Kahani Mohammad Hossein Ahmadi Mohammad Zamen CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application Energies two-phase closed thermosyphon CFD analysis visualization filling ratio thermal resistance |
| title | CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application |
| title_full | CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application |
| title_fullStr | CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application |
| title_full_unstemmed | CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application |
| title_short | CFD Modelling and Visual Analysis of Heat Transfer and Flow Pattern in a Vertical Two-Phase Closed Thermosyphon for Moderate-Temperature Application |
| title_sort | cfd modelling and visual analysis of heat transfer and flow pattern in a vertical two phase closed thermosyphon for moderate temperature application |
| topic | two-phase closed thermosyphon CFD analysis visualization filling ratio thermal resistance |
| url | https://www.mdpi.com/1996-1073/15/23/8955 |
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