A Study of Passenger Car Cabin Pre-Ventilation under the Sun
With the increasing intelligence of automobiles, vehicle pre-ventilation can be better controlled. In summer, cars parked in the open air are directly exposed to sunlight; thus, a high-temperature environment is formed in the occupant cabin, which seriously affects the passengers and driver’s riding...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/20/7154 |
| _version_ | 1827721101947437056 |
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| author | Yingchao Zhang Ziqiao Li Shengda Liu Guohua Wang He Chang |
| author_facet | Yingchao Zhang Ziqiao Li Shengda Liu Guohua Wang He Chang |
| author_sort | Yingchao Zhang |
| collection | DOAJ |
| description | With the increasing intelligence of automobiles, vehicle pre-ventilation can be better controlled. In summer, cars parked in the open air are directly exposed to sunlight; thus, a high-temperature environment is formed in the occupant cabin, which seriously affects the passengers and driver’s riding and driving experience. Meanwhile, lowering the temperature of the passenger compartment from a very high temperature to a comfortable temperature consumes a lot of energy. Therefore, it is increasingly important to study the pre-ventilation of the cabin in order to improve the thermal comfort of the occupant cabin and reduce energy consumption. In this paper, a new theoretical model of a cabin temperature control system is proposed. To support the theoretical model, an outdoor parking temperature rise test was carried out. Environmental parameters were obtained and used as the boundary conditions of the subsequent simulation. Based on the mechanism of the cabin temperature rise, the convective heat transfer coefficient on the body surface, the equivalent heat transfer model of the cabin, the solar radiation model and the physical properties of the air, a computational simulation of the temperature rise in the occupant cabin was carried out, and a simulation of the temperature rise in the occupant cabin exposure was studied. The simulation results were compared with the experimental findings to verify the accuracy of the simulation, which provided a reference for the design of the pre-cooling function of the occupant cabin. This study revealed that the pre-ventilation model developed reduces the vehicle cabin temperature through optimal control of air supply volumes and air supply angles. Furthermore, the developed pre-ventilation model is capable of reducing energy consumption, thereby reducing greenhouse gas emissions. |
| first_indexed | 2024-03-10T21:17:08Z |
| format | Article |
| id | doaj.art-f4828cf9c6e343a29386691e215b7eba |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T21:17:08Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f4828cf9c6e343a29386691e215b7eba2023-11-19T16:22:56ZengMDPI AGEnergies1996-10732023-10-011620715410.3390/en16207154A Study of Passenger Car Cabin Pre-Ventilation under the SunYingchao Zhang0Ziqiao Li1Shengda Liu2Guohua Wang3He Chang4State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaState Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, ChinaWith the increasing intelligence of automobiles, vehicle pre-ventilation can be better controlled. In summer, cars parked in the open air are directly exposed to sunlight; thus, a high-temperature environment is formed in the occupant cabin, which seriously affects the passengers and driver’s riding and driving experience. Meanwhile, lowering the temperature of the passenger compartment from a very high temperature to a comfortable temperature consumes a lot of energy. Therefore, it is increasingly important to study the pre-ventilation of the cabin in order to improve the thermal comfort of the occupant cabin and reduce energy consumption. In this paper, a new theoretical model of a cabin temperature control system is proposed. To support the theoretical model, an outdoor parking temperature rise test was carried out. Environmental parameters were obtained and used as the boundary conditions of the subsequent simulation. Based on the mechanism of the cabin temperature rise, the convective heat transfer coefficient on the body surface, the equivalent heat transfer model of the cabin, the solar radiation model and the physical properties of the air, a computational simulation of the temperature rise in the occupant cabin was carried out, and a simulation of the temperature rise in the occupant cabin exposure was studied. The simulation results were compared with the experimental findings to verify the accuracy of the simulation, which provided a reference for the design of the pre-cooling function of the occupant cabin. This study revealed that the pre-ventilation model developed reduces the vehicle cabin temperature through optimal control of air supply volumes and air supply angles. Furthermore, the developed pre-ventilation model is capable of reducing energy consumption, thereby reducing greenhouse gas emissions.https://www.mdpi.com/1996-1073/16/20/7154automotive engineeringoccupant cabinCFDsingle-phase flowsolar radiationgreenhouse effect |
| spellingShingle | Yingchao Zhang Ziqiao Li Shengda Liu Guohua Wang He Chang A Study of Passenger Car Cabin Pre-Ventilation under the Sun Energies automotive engineering occupant cabin CFD single-phase flow solar radiation greenhouse effect |
| title | A Study of Passenger Car Cabin Pre-Ventilation under the Sun |
| title_full | A Study of Passenger Car Cabin Pre-Ventilation under the Sun |
| title_fullStr | A Study of Passenger Car Cabin Pre-Ventilation under the Sun |
| title_full_unstemmed | A Study of Passenger Car Cabin Pre-Ventilation under the Sun |
| title_short | A Study of Passenger Car Cabin Pre-Ventilation under the Sun |
| title_sort | study of passenger car cabin pre ventilation under the sun |
| topic | automotive engineering occupant cabin CFD single-phase flow solar radiation greenhouse effect |
| url | https://www.mdpi.com/1996-1073/16/20/7154 |
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