Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System
To investigate the spray cooling characteristics and the impact of spray parameters such as chamber pressure, spray height, and spray tilt angle on heat transfer efficiency, a mathematical model based on the Eulerian–Lagrangian frame was established for an R410A closed-loop spray cooling system. The...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-01-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/17/2/339 |
| _version_ | 1797344124496510976 |
|---|---|
| author | Wenbo Yang Xuehao Sang Bin Chen Dong Li |
| author_facet | Wenbo Yang Xuehao Sang Bin Chen Dong Li |
| author_sort | Wenbo Yang |
| collection | DOAJ |
| description | To investigate the spray cooling characteristics and the impact of spray parameters such as chamber pressure, spray height, and spray tilt angle on heat transfer efficiency, a mathematical model based on the Eulerian–Lagrangian frame was established for an R410A closed-loop spray cooling system. The results revealed that the spray pattern is conical, with the center velocity significantly higher than the edge velocity. The temperature distribution of the cooling surface and liquid film height both exhibit a “W” shape, and the surface temperature is lower where the liquid film is thin. There is an optimal liquid film height of approximately 5 μm, at which the cooling surface temperature is the lowest. The surface temperature increases with an increase in the spray chamber pressure. Considering average cooling surface temperature, the optimal tilt angle is 40° with an average surface temperature of 330.1 K. When considering wall temperature and wall heat transfer coefficient uniformity, however, the optimal tilt angle is 10°, leading to the average surface temperature of 332.6 K. When increasing the optimal spray height to 70 mm, the average surface temperature is 313.4 K. |
| first_indexed | 2024-03-08T10:57:49Z |
| format | Article |
| id | doaj.art-00e2a7a5d1e64ada874652564e669d62 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T10:57:49Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-00e2a7a5d1e64ada874652564e669d622024-01-26T16:16:45ZengMDPI AGEnergies1996-10732024-01-0117233910.3390/en17020339Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling SystemWenbo Yang0Xuehao Sang1Bin Chen2Dong Li3State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaTo investigate the spray cooling characteristics and the impact of spray parameters such as chamber pressure, spray height, and spray tilt angle on heat transfer efficiency, a mathematical model based on the Eulerian–Lagrangian frame was established for an R410A closed-loop spray cooling system. The results revealed that the spray pattern is conical, with the center velocity significantly higher than the edge velocity. The temperature distribution of the cooling surface and liquid film height both exhibit a “W” shape, and the surface temperature is lower where the liquid film is thin. There is an optimal liquid film height of approximately 5 μm, at which the cooling surface temperature is the lowest. The surface temperature increases with an increase in the spray chamber pressure. Considering average cooling surface temperature, the optimal tilt angle is 40° with an average surface temperature of 330.1 K. When considering wall temperature and wall heat transfer coefficient uniformity, however, the optimal tilt angle is 10°, leading to the average surface temperature of 332.6 K. When increasing the optimal spray height to 70 mm, the average surface temperature is 313.4 K.https://www.mdpi.com/1996-1073/17/2/339spray coolingnumerical simulationR410Aheat flux |
| spellingShingle | Wenbo Yang Xuehao Sang Bin Chen Dong Li Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System Energies spray cooling numerical simulation R410A heat flux |
| title | Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System |
| title_full | Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System |
| title_fullStr | Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System |
| title_full_unstemmed | Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System |
| title_short | Numerical Investigations of the Cooling Performance of an R410A Closed-Loop Spray Cooling System |
| title_sort | numerical investigations of the cooling performance of an r410a closed loop spray cooling system |
| topic | spray cooling numerical simulation R410A heat flux |
| url | https://www.mdpi.com/1996-1073/17/2/339 |
| work_keys_str_mv | AT wenboyang numericalinvestigationsofthecoolingperformanceofanr410aclosedloopspraycoolingsystem AT xuehaosang numericalinvestigationsofthecoolingperformanceofanr410aclosedloopspraycoolingsystem AT binchen numericalinvestigationsofthecoolingperformanceofanr410aclosedloopspraycoolingsystem AT dongli numericalinvestigationsofthecoolingperformanceofanr410aclosedloopspraycoolingsystem |