Effect of Dynamic Vents on the Thermal Comfort of a Passenger Car

Singh, O. P.; Raut, Rohit; Biswas, Mrinmoy; Singh, R. V.

doi:10.5545/sv-jme.2015.2469

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…Tang Jiangming et al from Hunan University optimized the horizontal and vertical angles of the air supply grille of automobile air conditioning and improved the air distribution and the thermal comfort of the occupant cabin [23]. Prakash et al found that air supply at a fixed angle would lead to uneven temperature distribution in the occupant cabin and proposed an air supply scheme with regular changes in the air supply port angle [24].…”

Section: Introductionmentioning

confidence: 99%

A Study of Passenger Car Cabin Pre-Ventilation under the Sun

Zhang,

Li,

Liu

et al. 2023

Energies

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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.

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Section: Introductionmentioning

confidence: 99%

A Study of Passenger Car Cabin Pre-Ventilation under the Sun

Zhang,

Li,

Liu

et al. 2023

Energies

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“…Danca et al stated that thermal comfort leads to a safer trip, because it reduces the driver's stress [13]. Research by Singh et al showed that a uniform temperature inside the cabin of a parked car can be maintained using a particular vent angle, unfortunately not every car has a dynamic air vent [14]. Lahimer et al used solar reflective cover to maintain the temperature inside the car close to the ambient one, but it still took time to reach a comfortable temperature [2].…”

Section: Introductionmentioning

confidence: 99%

The characteristics of heat inside a parked car as energy source for thermoelectric generators

Sunawar

Garniwa

Hudaya

2019

Int J Energy Environ Eng

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Under a condition of sunlight exposure, the temperature of a parked car's cabin will increase gradually. Compared to the ambient temperature, the inside and outside temperature will be different, which will be favourable for thermoelectric generators. This study investigated the temperature distribution pattern of a car parked in the direct sun using real and model cars. Performing different scenarios, we found that the car model equipped with a fan and a dimmer was the suitable approach to the real car model. Compared to the ambient temperature, results for both the real car and the model car indicated that heat rose drastically inside the car cabin. The calculation using the thermoelectric generator eTEG HV37 considerably could generate up to 6.9 mW per module. Therefore, by having a thermoelectric generator installed on an area of 1 m 2 of the car roof, 280 W power could be generated.

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