Combined comfort model of thermal comfort and air quality on buses in Hong Kong

Shek, Ka Wing; Chan, W.T.

doi:10.1016/j.scitotenv.2007.08.063

Cited by 45 publications

(37 citation statements)

References 4 publications

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“…Da Silva et al (2006) performed a survey on a total of 28 pre-arranged subjects on a bus and examined, through artificial neural analysis, how these subjects' thermal sensations were affected by the physical environment. Shek and Chan (2008), conducting a survey on buses in Hong Kong, found that both the level of air quality and the level of thermal satisfaction affected passengers' assessment of the thermal environment in the buses. They found passengers on non-air-conditioned buses were relatively more concerned with air quality than those on air-conditioned buses.…”

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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“…Facilities and features inside the bus are in good and operational condition (e.g., comfortable seats with enough foot space, comfortable temperature, clean floor, ceiling, bus handles and stop request buttons with comfortable height). (Andaleeb et al, 2007;Shek and Chan, 2008) 2. Bus is well-equipped with priority seats for the elderly, pregnant women, and disabled people.…”

Section: Reliability Analysismentioning

confidence: 99%

Improving Traffic Infrastructure in a Developing Country: An Investigation into the Usage of Public Bus Transport in Malaysia

Soh¹,

Wong²,

Chong³

et al. 2014

Industrial Engineering and Management Systems

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Economic growth with rising household income has put more vehicles on the roads worsening traffic congestion, road accidents, and air and noise pollution. This situation is further aggravated by the potential working population who choose to drive to work instead of taking public transportation. Public bus transport (PBT) plays an important role in alleviating these problems. PBT is underutilized in Malaysia, and there is an opportunity to increase ridership without substantial investment. Therefore, this study was conducted to investigate the factors that influence the use of PBT in Malaysia. The data were collected using structured questionnaires from 400 respondents. The results of the analysis show that the twin factors consisting of perceived satisfaction of and perceived importance by users towards safety and comfort of facilities and services offered by PBT are significantly related to intention to use those services. The satisfaction of availability of season tickets, the importance of reliability of bus schedule and time table, and the importance of ticket pricing are also significant. By providing insights for both public bus operators and the government, this paper contributes to mitigate the underutilization of PBT in Malaysia and the consequences of putting more vehicles on the roads. From the theory perspective, this paper also contributes by extending the theory of reasoned-action to transportation studies.

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“…Thermal comfort can be defined as that condition of mind which expresses satisfaction with the thermal environment [30] . The reference to 'mind' indicates that it is essentially a subjective term; however, there has been extensive research in this area and a number of indices exist which can be used to assess environments for thermal comfort [7,15] . Atmaca [11] suggested three conditions for comfort; these are that the body is in heat balance and that the mean skin temperature and sweat rate are within limits required for comfort.…”

Section: Introductionmentioning

confidence: 99%

“…Workplace environmental conditions, such as humidity, indoor air quality and acoustics have significant relationships with workers' satisfaction and performance [2,8,16] . Indoors air quality could have a direct impact on health problems and leads to uncomfortable workplace environments [15,28,35] .…”

Section: Introductionmentioning

confidence: 99%

Thermal Comfort Assessment and Optimization of Environmental Factors by Using Taguchi Method

Ismail¹,

Rani²,

Makhbul³

et al. 2009

American J. of Applied Sciences

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Problem statement:The objective of this study was to determine the dominance effects of environmental factors such as Illuminance (lux), relative humidity (%) and WBGT (°C) on the operators' productivity at Malaysian automotive industry. Approach: One automotive parts assembly factory had been chosen as a subject for the study. The subjects were workers at the assembly section of the factory. The environment examined was the Illuminance (lux), relative humidity (%) and WBGT (°C) of the surrounding workstation area. Two sets of representative data including the Illuminance, relative humidity (%) and WBGT (°C) level and production rate were collected during the study. All the data was measured using Babuc apparatus which is capable to measure simultaneously those mentioned environmental factors. The time series data of fluctuating level of environmental were plotted to identify the significant changes of factors. Then Taguchi Method was being utilized to find the sequence of dominance factors that contributed to the productivity of operator at the specified production workstation. From there, optimum level for the three factors will be determine for optimum productivity. Further multiple linear regressions were employed to obtain the equation model in order to represent the relationship of these environmental factors towards productivity. Results: the thermal comfort assessments of this station which was the scale PMV was 2 and PPD is 79% ware likely to be satisfied by the worker. Conclusion: The study revealed that the dominant factor contribute to the productivity at the body assembly production line is WBGT and Illuminance whereas the empirical finding was closely related to the perception study by survey questionnaire distribution.

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Combined comfort model of thermal comfort and air quality on buses in Hong Kong

Cited by 45 publications

References 4 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

Improving Traffic Infrastructure in a Developing Country: An Investigation into the Usage of Public Bus Transport in Malaysia

Thermal Comfort Assessment and Optimization of Environmental Factors by Using Taguchi Method

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