Measurement and Analysis of Indoor Thermal Environment of a Library in the Hot-Summer and Warm-Winter Region of China

2013 ◽  
Vol 671-674 ◽  
pp. 2659-2663
Author(s):  
Kai Qiong Liu ◽  
Hong Juan Liu ◽  
Jiang He
Keyword(s):  
Thermal Environment ◽  
Measurement Data ◽  
Field Measurements ◽  
Air Velocity ◽  
Indoor Thermal Environment ◽  
Warm Winter ◽  
Effective Strategies ◽  
Measurement And Analysis ◽  
Globe Temperature ◽  
Temperature Surface

This paper presents a study on the indoor thermal environment of a library in the hot-summer and warm-winter region using field measurements. 15 measurement points were selected to measure the following thermal parameters: air temperature, globe temperature, surface temperature, relative humidity and air velocity. Analysis of measurement data are described, and effective strategies were proposed from the analysis results for improving the thermal environment of library buildings in the hot-summer and warm-winter region.

Measurement and Questionnaire Survey on Indoor Thermal Environment of a Library in the Hot-Summer and Warm-Winter Region of China

2013 ◽  
Vol 671-674 ◽  
pp. 2664-2669
Author(s):  
Hong Juan Liu ◽  
Jiang He ◽  
Kai Qiong Liu
Keyword(s):  
Relative Humidity ◽  
Thermal Environment ◽  
Measurement Data ◽  
Energy Performance ◽  
Air Velocity ◽  
Summer Period ◽  
Period Analysis ◽  
Indoor Thermal Environment ◽  
Warm Winter ◽  
Air Temperatures

This study dealt with the indoor thermal environment of an university library in Nanning where is hot in summer and warm in winter. Measurements of air temperatures, relative humidity and air velocity etc. at selected points inside the library were conducted during a summer period. Analysis results of measurement data was described in the paper. Thermal comfort was analyzed based on questionnaire survery. This paper also provides suggestions for improving the indoor thermal environment and comfort as well as energy performance in library-like buildings in the hot-summer and warm-winter region.

Measurement and Analysis of Summer Thermal Environment of Arcaded Pedestrian Space on a Pedestrian Street in the Lingnan Hot-Humid Region

2013 ◽  
Vol 671-674 ◽  
pp. 2652-2658 ◽  
Author(s):  
Yi Zhang ◽  
Jiang He
Keyword(s):  
Thermal Environment ◽  
Measurement Data ◽  
Temperature Variations ◽  
Thermal Environments ◽  
Existing Problems ◽  
Humid Region ◽  
Measurement And Analysis ◽  
Globe Temperature ◽  
Pedestrian Space ◽  
Pedestrian Street

Through summertime measurements at selected points, this paper presents the thermal environment data including air temperature and relative humidity, globe temperature and ground suface temperature of pedestrian spaces on Minsheng Road which is a pedestrian street in Nanning, Guangxi, China). The influence of temperature variations in pedestrian passages in front of shops and under arcades, the sun-shaded effect of the street as well as pavement surface temperature on the thermal environment of the arcaded pedestrian streets in the Lingnan hot-humid region is described in the paper. Based on analysis results of measurement data, comfortable thermal environments for arcaded pedestrian paces in the pedestrian streets of the Lingnan region were understood. The existing problems in the thermal environment and thermal comfort of arcaded pedestrian spaces were discussed. Constructive opinions and suggestions were also proposed.

scholarly journals Indoor Thermal Environment of Various Semi-Enclosed Atrium Configurations of Institutional Building in Tropical Climate

2021 ◽  
Vol 8 (2) ◽  
pp. 35-48
Author(s):  
Wardah Fatimah Mohammad Yusoff
Keyword(s):  
Thermal Environment ◽  
Thermal Sensation ◽  
Field Measurements ◽  
Tropical Climate ◽  
Air Velocity ◽  
Local Climate ◽  
Indoor Thermal Environment ◽  
Heat Penetration ◽  
Questionnaire Surveys ◽  
Involved Field

The consideration of local climate is essential for the application of atrium in building. Different strategies and approaches in atrium configuration are required for different climates in ensuring its effectiveness.  Nevertheless, the final aim is still similar which is to provide a comfortable environment for the users. Hence, this study was executed to examine the effects of top and side configurations on the indoor thermal environment of semi-enclosed atrium in the tropical climate. The methodologies involved field measurement and questionnaire survey. The field measurements were executed at two different configurations of semi-enclosed atriums in the tropical climate of Malaysia. Meanwhile, the questionnaire surveys were executed simultaneously with the field measurements in obtaining the users’ thermal sensation and satisfaction. The findings indicated that the top configuration had more influence to the indoor thermal environment compared to the side configuration as it determined the amount of solar heat penetration into the atrium area. Meanwhile, the side configuration influenced the air velocity inside the atrium. The Faculty of Engineering and Built Environment’s atrium that has opaque top finishes was found to have the average indoor operative temperature of less than 30 °C throughout the day, though the average outdoor air temperature was more than 30 °C. It also had more hours with neutral thermal sensation felt by the users compared to the Faculty of Economics and Management’s atrium that has transparent materials for the top finishes. The study is useful in guiding the selection of appropriate strategy for an atrium in tropical climate

scholarly journals A Field Study on the Indoor Thermal Environment of the Airport Terminal in Tibet Plateau in Winter

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Jianglong Zhen ◽  
Jun Lu ◽  
Guangqin Huang ◽  
Liyue Zeng ◽  
Jianping Lin ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Thermal Environment ◽  
Vertical Direction ◽  
Outer Zone ◽  
Tibet Plateau ◽  
Indoor Thermal Environment ◽  
Airport Terminal ◽  
Globe Temperature ◽  
Environment Parameters ◽  
Radiant Floor Heating

In order to study the characteristics of indoor thermal environment in the airport terminal in Tibet Plateau with radiant floor heating in winter, a field measurement of the indoor thermal environment was conducted in Lhasa Gonggar Airport terminal 2. First, the unique climate characteristics in Tibet Plateau were analyzed through comparison of meteorological parameters in Beijing and Lahsa. The thermal environment in the terminal was divided into outer zone and inner zone as well as south zone and north zone. Thermal environment parameters including air temperature, black globe temperature, relative humidity in each zone, and inner surface temperature of envelope were measured and analyzed. Meanwhile, temperature and relative humidity in the vertical direction were measured. In addition, PMV and PPD were calculated for evaluating the thermal environment in the terminal. The findings can provide guidance for the design and regulation of thermal environment in terminals in Tibet Plateau in China.

Study on Improving Thermal Environment of College Dormitory in Chongqing

2012 ◽  
Vol 610-613 ◽  
pp. 2849-2853
Author(s):  
Hong Yin Ou ◽  
Fang Liu ◽  
Qing Long Song ◽  
Long Xing Yu
Keyword(s):  
Field Test ◽  
Indoor Environment ◽  
Thermal Environment ◽  
Air Velocity ◽  
Thermal Discomfort ◽  
Indoor Thermal Environment ◽  
Simulation Results

To improve the low air velocity above the bed areas during the night in hot summer, the reformed plan for the college dormitory fan was presented.The indoor environment was simulated by the software Airpak3.0 to compaire the fan with both no diversion deflector and diversion deflector (the deflector angles are 60°, 120° and 160°) respectively. And a field test was conducted to confirm the simulation results. The results show that the indoor thermal environment above the bed areas has been improved inordinately if adding a deflector with different angles. The air velocity can be increased by 0.15m/s at most when the deflector angle is 160°, yet the airflow displays most evenly with the 120° deflector angle. Meanwhile, the temperature and thermal discomfort have been decreased. The variation of the simulation and measurement values tends to be consistent, so it suggests the fan installing the diversion deflector may improve the thermal environment of college dormitory.

scholarly journals Thermal environment assessment in selected Polish educational buildings

2021 ◽  
Vol 246 ◽  
pp. 15004
Author(s):  
Luiza Dębska ◽  
Justyna Krakowiak
Keyword(s):  
Indoor Air ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Subjective Assessment ◽  
Thermal Preference ◽  
Air Velocity ◽  
Indoor Thermal Environment ◽  
Environment Assessment ◽  
Educational Buildings ◽  
The City

The paper presents experimental results of a study on indoor thermal environment in selected educational buildings located in the city of Kielce (Poland). The volunteers in the investigated rooms were asked to fill in the anonymous questionnaires containing questions on their thermal sensation, thermal preference and thermal acceptability votes as well as humidity assessment and humidity preference votes. In total, 83 people completed the questionnaires. Simultaneously, the indoor air parameters were measured with a microlimate meter equipped with precision sensors to measure air and globe temperatures, air velocity and relative humidity. The analysis of the obtained results provides information on the subjective assessment of the thermal environment in the considered rooms. It allowed to assess whether the guidelines given in the standard are consistent with the real feeling of comfort of the respondents. Research in the performed scope has shown that the feelings of the respondents and the standard guidelines diverge. It was noticed that that the subjects definitely felt better in the rooms where the temperature was around 22.5°C. The subjects felt worse at the temperature of 25.3°C and the worst of 27.6°C.

scholarly journals Evaluation of litter material and ventilation systems on poultry production: II. thermal comfort

2011 ◽  
Vol 40 (6) ◽  
pp. 1356-1363 ◽  
Author(s):  
Paulo Giovanni de Abreu ◽  
Valéria Maria Nascimento Abreu ◽  
Arlei Coldebella ◽  
Fátima Regina Ferreira Jaenisch ◽  
Doralice Pedroso de Paiva
Keyword(s):  
Repeated Measures ◽  
Thermal Environment ◽  
Thermal Conditions ◽  
Radiant Heat ◽  
Poultry Production ◽  
Rice Husks ◽  
Air Velocity ◽  
Globe Temperature ◽  
Soybean Straw ◽  
Ventilation Systems

The objective of this study was to evaluate environmental thermal conditions in broiler houses with two different ventilation systems and two different litter materials. The experiment was carried out in four 12 m × 10 m broiler houses, internally divided in 4 boxes/poultry house, with 200 birds/pen for four consecutive flocks, each one with a duration of 42 days with 15 days of downtime between flocks. Treatments tested were two ventilation systems (stationary or oscillating fans), and two types of litter materials (soybean straw or rice husks). It was collected in the center of each pen and in the external enviroment, dry and wet bulb temperatures, black globe temperature, and air velocity. These data were collected at 3-hour intervals from 8:00 a.m. to 6:00 p.m. at the fourth, fifth and sixth week age of the bird. Based on the data collected at each time, wet and globe temperature index (WBGT) and radiant heat load (RHL) were determined. Litter temperature reaings were also performed by using an infrared thermometer. Effects of flock, ventilation, week, hour and the interactions among factors on the studied variables were evaluated in the analysis of the internal thermal environment by using the theory of mixed models for repeated measures. Ventilation provided by stationary and oscilating fans had equal behavior and it did not affect the studied variable. However, both ventilation systems are sufficient to soften internal thermal conditions in the broiler house in relation to the external environment. Relative humidity of the air is higher when rice husks is used as litter material.

Analysis of Internet Bar Use Evaporative Air-Conditioning and Ventilation of Thermal Comfort

2011 ◽  
Vol 393-395 ◽  
pp. 1106-1109
Author(s):  
Huang Xiang ◽  
Wei Wang ◽  
Sheng Wu
Keyword(s):  
Relative Humidity ◽  
Air Conditioning ◽  
Thermal Environment ◽  
Internal Heat ◽  
Air Velocity ◽  
Factors Affecting ◽  
Indoor Thermal Environment ◽  
Heat Sensation ◽  
Environment Quality ◽  
Sensitivity Factors

The factors affecting indoor thermal environment are briefly introduced in this article, and one Internet bar was tested and analyzed that used evaporative air-conditioning in lanzhou, gansu. Meanwhile, through the air temperature, the relative humidity and air velocity of sensitivity factors were analyzed that heat sensation to human body, changed the heat sensation for people's from qualitative to the quantitative. As one way and the basis has provided for the improvement room internal heat environment quality.

The cooling effect of a spray fan in an indoor hot environment

2020 ◽  
pp. 1420326X2091436
Author(s):  
Xiaojing Meng ◽  
Yihang Lv ◽  
Honggang Yang ◽  
Yi Wang
Keyword(s):  
Relative Humidity ◽  
Thermal Environment ◽  
Cooling Effect ◽  
Air Velocity ◽  
Velocity Increase ◽  
Wet Bulb Globe Temperature ◽  
Hot Environment ◽  
Globe Temperature ◽  
Set Up ◽  
Black Globe Temperature

The aim of this study is to evaluate the cooling effect of a spray fan in an indoor hot environment. An experimental workplace with a thermal environment of high temperature and radiation intensity was set up. The hot environment of the experimental workplace could not meet occupational health requirements when the heat source temperature exceeded 150°C. The effects of air velocity and relative humidity on the natural wet bulb temperature, black globe temperature and wet bulb globe temperature (WBGT) were investigated. The maximum reduction of the WBGT was about 1.7°C, with an air velocity increase by 1 m/s. There was a notable cooling effect on the hot environment for low air velocities (e.g. 0–2 m/s), while the cooling effect only increased slightly for high air velocity (e.g. 2–5 m/s). We also found that the indoor WBGT declined by 0.2–0.8°C when the relative humidity was increased by about 10%. These results may provide guidance for reducing heat stress in industrial hot environment.

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