Thermal comfort in Japanese schools

Kwok, Alison G.; Chun, Chungyoon

doi:10.1016/s0038-092x(03)00147-6

Cited by 126 publications

(67 citation statements)

References 4 publications

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“…This result means that most students were not satisfied with the humidity conditions either in winter or in fall. Therefore, indoor classroom environments in naturally ventilated buildings might not be able to provide suitable humidity comfort [9,10]. …”

Section: Seasonal Variation In Relative Humidity and Humidity Sensationsmentioning

confidence: 99%

Influence of seasonal variation on thermal comfort and ventilation rates in Gaza Strip climate

Elbayoumi¹,

Ramli²,

Yusof³

et al. 2014

Turkish J Eng Env Sci

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Abstract:The indoor air quality (IAQ) and thermal comfort in classrooms highly affect the health and productivity of children. Concerns have been raised regarding whether seasonal variation may affect thermal comfort and ventilation rate. In a two-season study of ventilation and thermal comfort of 36 classrooms in 12 naturally ventilated schools in Gaza, Palestine, ventilation rates and thermal comfort were measured. Data on environmental perception were obtained from 724 students by using a validated questionnaire. The results showed significant seasonal variation in perceived indoor environment and thermal comfort in the monitored schools. Differences in neutral temperature between seasons were also observed. Moreover, 83.3% of the classrooms presented a mean ventilation rate lower than 7.5 L/s per person in winter. During fall, only 50% of the measured classrooms presented a flow rate higher than the recommended value.Furthermore, there was a considerable increase in the carbon dioxide level in winter relative to fall. As vulnerable students, this situation negatively affects their performance and health. Therefore, mechanical ventilation systems are needed to provide a dependable and continuous supply of outdoor air.

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Section: Seasonal Variation In Relative Humidity and Humidity Sensationsmentioning

confidence: 99%

Influence of seasonal variation on thermal comfort and ventilation rates in Gaza Strip climate

Elbayoumi¹,

Ramli²,

Yusof³

et al. 2014

Turkish J Eng Env Sci

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“…This method was included in later versions of ASHRAE Standard 55, allowing researchers to choose between using a running mean for seven days or 30 days previous to the day in question of the thermal comfort study (ASHRAE 2010;. This research project refers to the Adaptive Comfort Model defined in latest version of ASHRAE 55 (2013), as it has been used for thermal comfort studies in Australian schools (de Dear et al 2015), sub--tropical countries (Kwok & Chun 2003;Puteh et al 2012;Hwang et al 2009;Yang and Zhang 2007) and tropical countries (Wong & Khoo 2003 d) The prevailing mean outdoor temperature is greater than 10°C and less than 33.5°C.…”

Section: Adaptive Comfort Modelmentioning

confidence: 99%

“…As living standards have improved in these countries, air--conditioning has generally become more affordable. To assess the thermal comfort of children in naturally ventilated classrooms, the ASHRAE Standard 55 has been used in thermal comfort surveys in Singapore (Wong and Khoo 2003), Japan (Kwok & Chun 2003), Malaysia (Puteh et al 2012), Taiwan (Hwang et al 2009) and sub--tropical China (Yang and Zhang 2008).…”

Section: Thermal Comfort Studies In Sub--tropical and Tropical Classrmentioning

confidence: 99%

“…In Japan, 72% of the occupants of the naturally ventilated classrooms expressed satisfaction with the indoor climate conditions at 26.9°C. When the occupants were asked what they would prefer, more than half responded that they would prefer to be cooler (Kwok & Chun 2003). In Taiwan it was found that 87% of respondents indicated that they were satisfied with the level of thermal comfort in their classrooms, even though only 35% of the physical measurements fell with the ASHRAE comfort range for 80% acceptability (Hwang et al 2009).…”

Section: Thermal Comfort Studies In Sub--tropical and Tropical Classrmentioning

confidence: 99%

“…A summary of the key findings and how these have informed the research questions is discussed here. Thermal comfort studies of children in naturally ventilated classrooms in tropical and sub--tropical Asian countries question whether to air--condition classrooms, as has been the practice in Western countries (Wong and Khoo 2003, Kwok & Chun 2003, Puteh et al 2012, Hwang et al 2009, Yang and Zhang 2008. Thermal comfort studies of Australian school children found that children prefer lower temperatures than those within the comfort range specified by the Adaptive Comfort Standard in ASHRAE 55 (2013) and that those schools from places with more varied outdoor temperature had higher adaptability (de Dear et al 2015).…”

Section: Summary Of Literature Reviewmentioning

confidence: 99%

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Retrofitting Passive Cooling Strategies to a Brisbane School: A Case Study of the Physical and Social Aspects

Kuiri¹

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In subtropical southeast Queensland, a common approach to improving thermal comfort in existing school classrooms is to use air--conditioners. However, increasing reliance on air--conditioners in schools adds to energy costs and increases carbon emissions. Greater understanding of low energy approaches to improving thermal comfort is needed to address this problem. The purpose of this research was to firstly, evaluate the impact of four passive cooling strategies retrofitted to existing Results indicate that the duration of high classroom temperatures decreased following each intervention. However, the reduction in classroom temperature was not enough to be within an acceptable comfort range for summer months, particularly during hot and humid weather. Common adaptive behaviours exhibited by teachers included the use of windows and ceiling fans to increase air movement, and scheduling more intense teaching in the cooler, morning session. The research identified times in the school year when classrooms with passive, retrofitted interventions were within an acceptable comfort range. However, a significant finding was that air--conditioning some classrooms and not others was seen to be an equity issue. The research makes an important contribution to the information available to schools on low energy approaches to improving thermal comfort. These approaches include reducing heat load in existing classrooms by retrofitting passive cooling strategies, increasing awareness amongst school communities of the environmental impact of mechanical cooling and heating, and increasing awareness amongst teachers of the potential for adaptive behaviours to decrease the use of mechanical cooling and heating.ii

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Athienitis

O’Brien

2015

Modeling, Design, and Optimization of Net‐Zero Energy Buildings

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Thermal comfort in Japanese schools

Cited by 126 publications

References 4 publications

Influence of seasonal variation on thermal comfort and ventilation rates in Gaza Strip climate

Influence of seasonal variation on thermal comfort and ventilation rates in Gaza Strip climate

Retrofitting Passive Cooling Strategies to a Brisbane School: A Case Study of the Physical and Social Aspects

Net ZEB case studies

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