Passenger Thermal Comfort in Vehicles - A Review

Walgama, C; Fackrell, Shelagh; Karimi, Munawar Nawab; Fartaj, Amir; Rankin, G. W.

doi:10.1243/09544070d00705

Cited by 41 publications

(20 citation statements)

References 62 publications

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“…The thermal comfort of passengers is a priority concern in mass transportation (Bhatti 1999a, b) owing to its relevance to service quality and energy consumption (Walgama et al 2006). Thus, ensuring thermal comfort inside mass transportation vehicles involves either defining the optimal temperature and acceptable thermal comfort zone, as perceived by passengers, or estimating the thermal sensations of passengers under certain conditions.…”

Section: Introductionmentioning

confidence: 99%

Passenger thermal perceptions, thermal comfort requirements, and adaptations in short- and long-haul vehicles

et al. 2009

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While thermal comfort in mass transportation vehicles is relevant to service quality and energy consumption, benchmarks for such comfort that reflect the thermal adaptations of passengers are currently lacking. This study reports a field experiment involving simultaneous physical measurements and a questionnaire survey, collecting data from 2,129 respondents, that evaluated thermal comfort in short- and long-haul buses and trains. Experimental results indicate that high air temperature, strong solar radiation, and low air movement explain why passengers feel thermally uncomfortable. The overall insulation of clothing worn by passengers and thermal adaptive behaviour in vehicles differ from those in their living and working spaces. Passengers in short-haul vehicles habitually adjust the air outlets to increase thermal comfort, while passengers in long-haul vehicles prefer to draw the drapes to reduce discomfort from extended exposure to solar radiation. The neutral temperatures for short- and long-haul vehicles are 26.2 degrees C and 27.4 degrees C, while the comfort zones are 22.4-28.9 degrees C and 22.4-30.1 degrees C, respectively. The results of this study provide a valuable reference for practitioners involved in determining the adequate control and management of in-vehicle thermal environments, as well as facilitating design of buses and trains, ultimately contributing to efforts to achieve a balance between the thermal comfort satisfaction of passengers and energy conserving measures for air-conditioning in mass transportation vehicles.

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Section: Introductionmentioning

confidence: 99%

Passenger thermal perceptions, thermal comfort requirements, and adaptations in short- and long-haul vehicles

et al. 2009

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“…They also noted various effects of dynamic air vents. Walgama et al [5] in their paper classified the work with respect to the passenger compartment environment or the condition of the passengers and their interaction with the compartment. The effects of factors such as flow field and temperature field were taken into consideration.…”

Section: Effect Of Dynamic Vents On the Thermal Comfort Of A Passengementioning

confidence: 99%

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

Singh

Raut

Biswas

et al. 2015

SV-JME

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• CFD model is validated against experimentally measured data during the daytime.• Uniform temperature distribution during the when cooling is initiated is observed for a particular vent angle.• For the first 3 to 4 minutes the car air-conditioner should be operated at a high flow setting using the dynamic vents.• Results can be utilized to save energy without any changes in the air-conditioning unit.

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“…Recent reviews deal with TS models. Walgama et al [20] present computational and empirical models to predict thermal response and TS in the transient non-uniform environment for the automotive sector. Seven TS prediction models are experimentally compared in [21], indicating how the accuracy of the input parameters and the characteristics of the model affect the prediction accuracy.…”

Section: Introductionmentioning

confidence: 99%

Models and Indicators to Assess Thermal Sensation Under Steady-State and Transient Conditions

Enescu

2019

Energies

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The assessment of thermal sensation is the first stage of many studies aimed at addressing thermal comfort and at establishing the related criteria used in indoor and outdoor environments. The study of thermal sensation requires suitable modelling of the human body, taking into account the factors that affect the physiological and psychological reactions that occur under different environmental conditions. These aspects are becoming more and more relevant in the present context in which thermal sensation and thermal comfort are represented as objectives or constraints in a wider range of problems referring to the living environment. This paper first considers the models of the human body used in steady-state and transient conditions. Starting from the conceptual formulations of the heat balance equations, this paper follows the evolution occurred during the years to refine the models. This evolution is also marked by the availability of increasingly higher computational capability that enabled the researchers developing transient models with a growing level of detail and accuracy, and by the validation of the models through experimental studies that exploit advanced technologies. The paper then provides an overview of the indicators used to characterise the local and overall thermal sensation, indicating the relations with local and overall thermal comfort.

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Passenger Thermal Comfort in Vehicles - A Review

Cited by 41 publications

References 62 publications

Passenger thermal perceptions, thermal comfort requirements, and adaptations in short- and long-haul vehicles

Passenger thermal perceptions, thermal comfort requirements, and adaptations in short- and long-haul vehicles

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

Models and Indicators to Assess Thermal Sensation Under Steady-State and Transient Conditions

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