Measurement and Analysis of Summer Outdoor Thermal Environment of Campus Open Space in Guangzhou

2011 ◽  
Vol 121-126 ◽  
pp. 4680-4684
Author(s):  
Guang Chen ◽  
Li Hua Zhao ◽  
Qiong Li
Keyword(s):  
Energy Saving ◽  
Open Space ◽  
Thermal Environment ◽  
Great Influence ◽  
View Factor ◽  
Environment Design ◽  
Sky View Factor ◽  
Hot Environment ◽  
Outdoor Thermal Environment ◽  
Measurement And Analysis

Open space is an important part of Campus, also has an important influence to the thermal environment of campus. The measurement of summer outdoor thermal environment of campus open space showed that: the piloti can effectively improve the thermal environment in hot summer; underlying surface materials, sky view factor has a great influence on the outdoor thermal environment. Using appropriate surface structure, increasing piloti and increasing square shading are suggested as outdoor thermal environment optimizing measures based the measure results. Advices were given for hot environment design and passive energy saving design

scholarly journals Assessing the built environment of neighborhood in the winter city from the perspective of pupils' commuting safety

2020 ◽  
Author(s):  
Hong Leng ◽  
◽  
Huimin Zhao ◽  
Chunyu Zou ◽  
◽  
...  
Keyword(s):  
Built Environment ◽  
Influencing Factors ◽  
Open Space ◽  
Road Traffic ◽  
Thermal Environment ◽  
Gated Communities ◽  
Environment Design ◽  
Signal Identification ◽  
Factors Affecting ◽  
Social Management

Safety commuting environment can promote children’s walking and cycling, thus reducing the risk of obesity and other diseases. Most of the existing studies on children’s safety focus on open space, but pay little attention to children's commuting environment. Moreover, few studies pay attention to the differences between open blocks and gated communities in winter city. Taking Harbin, a winter city in China, as an example, this study uses the optimized IPA method to explore the built environment factors affecting pupils’ commuting safety from three aspects: environment design, social management and road traffic. The results show that the influencing factors of road traffic have the highest impact on pupils‘ commuting safety. In addition, the occupation management in social management also has a great impact. In terms of satisfaction, the satisfaction with gated communities is generally higher than that with open blocks, but the satisfaction of open block is higher in neighbourhood relationship and street thermal environment. By coupling the importance and satisfaction of influencing factors, it is found that safety guardrail, signal identification, occupation management are in urgent need of renovation.

scholarly journals The Influence of Sky View Factor on Daytime and Nighttime Urban Land Surface Temperature in Different Spatial-Temporal Scales: A Case Study of Beijing

2021 ◽  
Vol 13 (20) ◽  
pp. 4117
Author(s):  
Qiang Chen ◽  
Qianhao Cheng ◽  
Yunhao Chen ◽  
Kangning Li ◽  
Dandan Wang ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Thermal Environment ◽  
Experimental Results ◽  
View Factor ◽  
Temporal Scales ◽  
Building Height ◽  
Sky View Factor ◽  
The Impact

Urban building morphology has a significant impact on the urban thermal environment (UTE). The sky view factor (SVF) is an important structure index of buildings and combines height and density attributes. These factors have impact on the land surface temperature (LST). Thus, it is crucial to analyze the relationship between SVF and LST in different spatial-temporal scales. Therefore, we tried to use a building vector database to calculate the SVF, and we used remote sensing thermal infrared band to retrieve LST. Then, we analyzed the influence between SVF and LST in different spatial and temporal scales, and we analyzed the seasonal variation, day–night variation, and the impact of building height and density of the SVF–LST relationship. We selected the core built-up area of Beijing as the study area and analyzed the SVF–LST relationship in four periods in 2018. The temporal experimental results indicated that LST is higher in the obscured areas than in the open areas at nighttime. In winter, the maximum mean LST is in the open areas. The spatial experimental results indicate that the SVF and LST relationship is different in the low SVF region, with 30 m and 90 m pixel scale in the daytime. This may be the shadow cooling effect around the buildings. In addition, we discussed the effects of building height and shading on the SVF–LST relationship, and the experimental results show that the average shading ratio is the largest at 0.38 in the mid-rise building area in winter.

Field Measurement and Analysis of the Micro Climate of a Campus Square

2012 ◽  
Vol 610-613 ◽  
pp. 923-927
Author(s):  
Yan Yan Huang ◽  
Shi Chao Deng
Keyword(s):  
Wind Speed ◽  
Public Space ◽  
Thermal Environment ◽  
Environment Design ◽  
Cold Region ◽  
Actual Measurement ◽  
Data Collection And Analysis ◽  
Measurement And Analysis ◽  
Winter Cold

A square is an important multi-functional public space on campus, which can be used as a venue for traffic, gathering, recreational activities and cultural events, and thus the thermal environment of the campus square will directly influence the overall environmental quality of campus. This paper studies a campus square in the summer-hot and winter-cold region, selects typical positions to conduct actual measurement of parameters, such as temperature, relative humidity, wind speed and solar radiation, which indicate the thermal environment. Based on data collection and analysis, it is concluded that the thermal environment of the campus square is affected by microclimate factors such as the square underlying surface properties, vegetation and building and road orientations. This paper is aimed at exploring the regularity of the correlation between microclimate factors and thermal environment in order to facilitate the improvement of the thermal environment of the campus square, make it more comfortable and provide ideas for the landscape and architectural environment design.

Research on Energy Saving Design of Urban Planning under Climatic Environment Influence

2012 ◽  
Vol 616-618 ◽  
pp. 1254-1259
Author(s):  
Hui Zhang ◽  
Zhuang Yu
Keyword(s):  
Urban Planning ◽  
Energy Saving ◽  
Open Space ◽  
Cfd Simulation ◽  
Thermal Environment ◽  
Space Environment ◽  
Climate Adaptability ◽  
Climatic Environment ◽  
Environment Study ◽  
The City

City climate, as one of the important component of city environment, plays an important role in affecting city space environment and urban planning. Taking the city Wu Han as a case, this paper introduces how to apply the CFD simulation of the digital model of metropolis to thermal environment study. Based on the phenomena of the thermal environment, tropical island effect and analysis, effective simulation results and the appropriate measures are given. Based on the analysis, some technical measures were discussed, such as city distribution, space shape and open space. According to the proof analysis, these measures are effective methods to improve the thermal environment of metropolis, and it is helpful to deal with the climate adaptability problems and energy saving design of the city.

Tree planting indices and their effects on summer park thermal environment: A case study of a subtropical satellite city, China

2020 ◽  
pp. 1420326X2097761
Author(s):  
Wei Guo ◽  
Bin Cheng ◽  
Chunlu Wang ◽  
Xinyu Tang
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Thermal Environment ◽  
Urban Forestry ◽  
Urban Environments ◽  
Tree Planting ◽  
View Factor ◽  
Radiation Level ◽  
Area Index ◽  
Sky View Factor

Urban residents are suffering from serious thermal stress resulting from urban heat island and global warming. Investigators have explored several methods to address this issue. Vegetation, especially trees, were found to play a vital part in urban environments. It produces a cooling effect by reducing temperature and radiation levels. To find thermal performances of trees in detail, this study physically measured two urban parks during August 2019 in a satellite city of China regarding their thermal environments relevant to tree planting indices. There were three planting indices used, sky view factor, leaf area index and enclosure area. Through associating them with thermal indicators by linear regression, all of the indices were confirmed to have significant thermal effects. Every 0.1 increase in sky view factor resulted in an increase of 1°C air temperature, 0.16 m/s air velocity, 40 W/m2 solar radiation level and 1.6°C mean radiant temperature. Same effects were found in nearly 0.4 leaf area index decrease and approximately 20 m2 enclosure area increase. These results provide very optimistic directions for future urban forestry planning and landscaping.

scholarly journals Effects of Foliage and Sky View Factor on the Urban Thermal Environment.

2001 ◽  
Vol 57 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Atsushi TORIYAMA ◽  
Nobutaka MONJI ◽  
Yasuyuki AONO ◽  
Ken HAMOTANI
Keyword(s):  
Thermal Environment ◽  
View Factor ◽  
Sky View Factor ◽  
Urban Thermal Environment

scholarly journals Effects of Roadside Trees and Road Orientation on Thermal Environment in a Tropical City

2020 ◽  
Vol 12 (3) ◽  
pp. 1053 ◽  
Author(s):  
Sheikh Ahmad Zaki ◽  
Hai Jian Toh ◽  
Fitri Yakub ◽  
Ahmad Shakir Mohd Saudi ◽  
Jorge Alfredo Ardila-Rey ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Air Temperature ◽  
Thermal Environment ◽  
Absolute Humidity ◽  
Field Measurements ◽  
View Factor ◽  
Physiological Equivalent Temperature ◽  
Thermal Environments ◽  
Outdoor Thermal Environment ◽  
Tropical Cities

Emerging tropical cities are experiencing rapid population growth and development, which can greatly affect the thermal environments. The effects of roadside trees and road orientation on the outdoor thermal environment were investigated on four different roads in Kuala Lumpur, Malaysia. Field measurements were conducted to assess outdoor thermal environments, where the selection of sites was based on different roadside tree morphological features and road orientations. Outdoor air temperature (Ta), relative humidity (RH), globe temperature (Tg), wind speed (WS), and wind direction (WD) were measured. Absolute humidity (AH) was estimated based on relative humidity and air temperature. Planting dense canopy trees with an average sky view factor (SVF) of 0.07 reduced the mean radiant temperature (Tmrt) by 35% and the physiological equivalent temperature (PET) by 25%. East–West (E–W) and Northwest–Southeast (NW–SE) oriented roads had high PET values of 41 °C and 43 °C, respectively. North–South (N–S) and Northeast–Southwest (NE–SW) orientated roads had lower PET values (37 °C), providing improved outdoor microclimate. Roadside trees provided greater cooling potential in E–W and NW–SE oriented roads. The findings are useful for urban road design in tropical cities in order to improve the outdoor thermal environment and pedestrian comfort.

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