A Field Survey on Thermal Comfort of Occupants and Cold Stress in CLT School Buildings

The study of thermal comfort in buildings is required to maintain a stable and comfortable condition of the indoor environment. The climate chamber study used to determine thermal comfort is mathematically reproducible and robust, but exaggerative and hence is energy inefficient, whereas the adaptive model-based field survey method is exhaustive and bioclimatic specific. Although, several field survey-based thermal comfort studies have been reported from India, these studies were conducted mostly either in hot and humid or composite climatic condition, and very few research has been reported from cold climatic region, which lies mostly along the high altitudinal Himalayan region. In this paper, the results of field survey-based thermal comfort studies in residential houses of highly altitudinal Darjeeling Himalayan region in eastern India are presented. The study found that female subjects showed a lesser clothing cover but portrayed a higher discomfort with lower thermal sensation and higher comfort temperature. The comfort temperature as determined in this study did not comply with the ASHRAE standard 55 graphical method, and hence new comfort zone for regions with similar cold climate is proposed.

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Field Survey and Analysis of Damaged School Buildings by the 2013 Typhoon Haiyan and Storm Surge

Journal of Japan Society of Civil Engineers Ser B2 (Coastal Engineering) ◽

10.2208/kaigan.71.i_1669 ◽

2015 ◽

Vol 71 (2) ◽

pp. I_1669-I_1674 ◽

Cited By ~ 2

Author(s):

Anawat SUPPASRI ◽

Carine J. YI ◽

Natt LEELAWAT ◽

Masashi WATANABE ◽

Jeremy D. BRICKER ◽

...

Keyword(s):

Storm Surge ◽

Field Survey ◽

School Buildings

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Kenyaman Termal Bangunan Sekolah Dasar Negeri (Studi Kasus : Sekolah Dasar Negeri 02 Ulujami Pagi, Jakarta)

Vitruvian ◽

10.22441/vitruvian.2018.v8i2.003 ◽

2019 ◽

Vol 8 (2) ◽

pp. 75

Author(s):

Randy Dwiyan Delyuzir ◽

Anisa Murni

Keyword(s):

Elementary School ◽

Thermal Comfort ◽

Elementary School Students ◽

Air Temperature ◽

Learning Process ◽

The State ◽

School Buildings ◽

School Students ◽

Public Elementary School

AbstrakPenelitian terhadap kenyamanan termal dengan studi kasus bangunan sekolah dasar negeri dan penggunanya sangat penting untuk dilakukan, karena dengan adanya penelitian ini, akan diketahui bagaimana kenyamanan termal siswa sekolah dasar negeri yang berada dalam ruang kelas di Sekolah Dasar Negeri 02 Ulujami Pagi, Jakarta. Sehingga untuk kedepannya dapat diberikan rekomendasi perbaikan mengenai gedung sekolah yang dirasa nyaman bagi para siswa/i sehingga dapat mendukung proses belajar yang lebih baik. Metode yang digunakan dalam penulisan ini adalah kuantitatif dengan meneliti pada populasi dan sampel tertentu menggunakan instrument Thermometer, Thermo-Hygrometer, Anemometer, dan kuesioner. Hasil penelitian didapatkan suhu nyaman bagi siswa Sekolah Dasar Negeri 02 Ulujami Pagi, Jakarta adalah 30,20ºC suhu udara (Ta). sedangkan rentang suhu nyaman antara -0,5 dan +0,5, dicapai antara 28,80ºC sampai 31,60 ºC suhu udara (Ta).Kata Kunci: kenyamanan termal, suhu bangunan, sekolah dasar AbstractResearch on thermal comfort with a case study of public elementary school buildings and its users is very important to do, because with this study, it will be known how the thermal comfort of public elementary school students who are in the classroom at Ulujami Pagi 02 Elementary School, Jakarta. So that in the future it can be given recommendations for improvements to school buildings that are felt comfortable for students so that they can support a better learning process. The method used in this writing is quantitative by examining the population and certain samples using a Thermometer, Thermo-Hygrometer, Anemometer, and questionnaire. The results of the study obtained a comfortable temperature for students of the State Elementary School 02 Ulujami Pagi, Jakarta is 30.20ºC air temperature (Ta). while the comfortable temperature range is between -0.5 and +0.5, reached between 28.80ºC to 31.60ºC air temperature (Ta).Keywords: thermal comfort, building temperature, elementary school

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Evaluation of outdoor thermal comfort conditions in northern Russia over 30-year period: Arkhangelsk region

Geographica Pannonica ◽

10.5937/gp24-24738 ◽

2020 ◽

Vol 24 (4) ◽

pp. 252-260

Author(s):

Pavel Konstantinov ◽

Natalia Shartova ◽

Mikhail Varentsov ◽

Boris Revich

Keyword(s):

Cold Stress ◽

Thermal Comfort ◽

Arctic Region ◽

Outdoor Thermal Comfort ◽

The Arctic ◽

Novaya Zemlya ◽

Arkhangelsk Region ◽

Climatic Period ◽

Bioclimatic Comfort ◽

Extreme Cold

The aim of the current paper is to evaluate spatial and temporal characteristics of the distribution of bioclimatic comfort within the Arkhangelsk region (Russian Federation) with two modern indices of thermal comfort: PET and UTCI. Its average values calculated for the modern climatic period (1981-2010) in the monthly mean give a clear picture of spatial heterogeneity for the warmest month (July) and for the coldest one (January). The spatial picture of both indices in July allows us to distinguish three large internal regions: the Arkhangelsk province, the continental part of the Nenets Autonomous Okrug (NAO) and Novaya Zemlya islands (NZ). Winter distribution of thermal discomfort is fundamentally different: the coldest regions (with extreme cold stress) are equally NZ and the Eastern half of NAO; intermediate position is occupied by the West of the NAO and the extreme northeast of the Arkhangelsk region, the highest winter UTCI values are observed in the rest of the region. In Archangelsk-city extreme cold stress in January has repeatability 6.7%, in February-4%, in December-2.2%, respectively. The average number of time points during the year at which thermal stress is not observed is only 19%. Obtained results will be the basis for planning relevant health measures and providing reliable forecasts of the effects of climate change in the Arctic region.

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Winter Thermal Comfort and Perceived Air Quality: A Case Study of Primary Schools in Severe Cold Regions in China

Energies ◽

10.3390/en13225958 ◽

2020 ◽

Vol 13 (22) ◽

pp. 5958

Author(s):

Fusheng Ma ◽

Changhong Zhan ◽

Xiaoyang Xu ◽

Guanghao Li

Keyword(s):

Air Quality ◽

Primary School ◽

Thermal Comfort ◽

Indoor Air ◽

Primary Schools ◽

Natural Ventilation ◽

Thermal Sensation ◽

School Buildings ◽

Heating Season ◽

Cold Regions

In Northeast China, most classrooms in primary and secondary schools still use natural ventilation during cold days in winter. This study investigated the thermal comfort and the perceived air quality of children in primary schools in severe cold regions in China. Field measurements were conducted in four typical primary classrooms in two naturally ventilated teaching buildings in the winter of 2016 in the provincial city of Shenyang. Six field surveys were distributed to 141 primary students aged 8 to 11, and 835 valid questionnaires were collected. The results showed that the indoor temperature and the daily mean CO2 concentrations of the primary school classrooms ranged from 17.06 to 24.29 °C and from 1701 to 3959 ppm, respectively. The thermal neutral temperature of the primary school students was 18.5 °C, and the 90% thermal comfort temperature ranged from 17.3 to 20.1 °C. Children were able to respond to changes in indoor air quality, but there was no significant correlation between the children’s perceptions of air quality and the carbon dioxide levels in the classroom. In general, children have a lower comfort temperature than adults. In addition, children are more sensitive to temperature changes during the heating season than adults. Due to differences in thermal sensation between children and adults, the current thermal comfort standard based on adult data is not applicable to primary school buildings and children. The air quality evaluation during heating season indicates that it is necessary to add indoor air environment monitoring instruments and purification equipment to the naturally ventilated classrooms. At present and in the future, more research based on children’s data is needed to solve the indoor air environment problems in primary school buildings.

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