Influence of Water Bodies on Outdoor Air Temperature in Hot and Humid Climate

ICSDC 2011 ◽  
2012 ◽  
Author(s):  
Nyuk Hien Wong ◽  
Chun Liang Tan ◽  
Andrita Dyah Shinta Nindyani ◽  
Steve Kardinal Jusuf ◽  
Erna Tan
Keyword(s):  
Air Temperature ◽  
Water Bodies ◽  
Outdoor Air ◽  
Humid Climate ◽  
Influence Of Water ◽  
Hot And Humid Climate

Thermal comfort and energy performance of a dedicated outdoor air system with ceiling fans in hot and humid climate

2019 ◽  
Vol 203 ◽  
pp. 109448 ◽  
Author(s):  
Kuniaki Mihara ◽  
Chandra Sekhar ◽  
Yuichi Takemasa ◽  
Bertrand Lasternas ◽  
Kwok Wai Tham
Keyword(s):  
Thermal Comfort ◽  
Energy Performance ◽  
Outdoor Air ◽  
Humid Climate ◽  
Air System ◽  
Hot And Humid Climate

scholarly journals Temperate Air Breathing Increases Cycling Performance in Hot and Humid Climate Environment

Life ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 911
Author(s):  
Clovis Chabert ◽  
Aurélie Collado ◽  
Olivier Hue
Keyword(s):  
Air Temperature ◽  
Cycling Performance ◽  
Humid Climate ◽  
Constant Intensity ◽  
Male Athletes ◽  
Perceived Effort ◽  
Sports Events ◽  
Hot Air ◽  
Air Temperatures ◽  
Hot And Humid Climate

Practicing physical activity in a hot and humid climate (HHC) is becoming increasingly common due to anthropogenic climate change and the growing number of international sports events held in warm countries. The aim of this study was to understand the physiological and psychological effects of breathing two air temperatures during cycling exercise in HHC. Ten male athletes performed two sessions of exercise in HHC (T°: 32.0 ± 0.5 °C, relative humidity: 78.6 ± 0.7%) during which they breathed hot air (HA, 33.2 ± 0.06 °C) or temperate air (TA, 22.6 ± 0.1 °C). Each session was composed of 30 min of pre-fatigue cycling at constant intensity, followed by a 10 min self-regulated performance. During pre-fatigue, TA induced a better feeling score and a lower rating of perceived effort (respectively, +0.9 ± 0.2, p < 0.05; 1.13 ± 0.21; p < 0.05) with no changes in physiological parameters. During performance, oxygen consumption and mechanical workload were increased by TA (respectively, +0.23 ± 0.1 L min−1, p < 0.05 and +19.2 ± 6.1 W, p < 0.01), whereas no significant differences were observed for psychological parameters. Reducing the breathed air temperature decreased the discomfort induced by HHC during exercise and increased the performance capacity during self-regulated exercise. Thus, breathed air temperature perception is linked to the hardship of training sessions and directly contributes to the performance decrease in HHC.

scholarly journals Thermal performance of a non–segmented and segmented tall atrium in hot and humid climate

2021 ◽  
Vol 2042 (1) ◽  
pp. 012162
Author(s):  
Priya Pawar ◽  
Deying Zhang ◽  
Xiaoying Wu ◽  
Werner Lang
Keyword(s):  
Wind Velocity ◽  
Air Temperature ◽  
Indoor Air ◽  
Thermal Conditions ◽  
Wind Pressure ◽  
Humid Climate ◽  
Pressure Coefficients ◽  
Starting Point ◽  
Buoyancy Forces ◽  
Hot And Humid Climate

Abstract The study was designed to quantify the thermal conditions in tall atria in office buildings to serve as a starting point towards understanding their performance. The simulation study of a non-segmented and segmented atrium of 250 m height reveals indoor air temperature, wind velocity contours and wind pressure coefficients at various heights of each atrium type. In a hot and humid climate like that of Singapore, the internal temperatures within each atrium stack remain constant at 27°C. However, the wind velocity in the non-segmented atrium (of 0.5 - 0.7 m/s) is lower than acceptable (0.9 m/s) for human occupancy. Adding segments and a larger inlet to the atrium solves the problem of low wind velocity without increasing the effective ambient temperature within the atrium stack. Additionally, the segmented atrium offers the advantage of displaying lower buoyancy forces by lowering the pressure differential within a tall stack thereby providing better comfort conditions.

Influence of Glazing Types on the Indoor Thermal Performance of Tropical High-Rise Residential Buildings

2016 ◽  
Vol 692 ◽  
pp. 27-37
Author(s):  
Nedhal Al-Tamimi ◽  
Abdultawab Qahtan
Keyword(s):  
Air Temperature ◽  
Indoor Air ◽  
Residential Buildings ◽  
Primary Objective ◽  
Radiation Absorption ◽  
Base Case ◽  
Indoor Environments ◽  
Humid Climate ◽  
High Rise ◽  
Hot And Humid Climate

In tropical climates, the solar radiation absorption of glazed windows results in overheated indoor environments and increased cooling energy loads during daytime. Meanwhile, situations differ during nighttime. The present study focuses on the effects of glazing type on the indoor temperature in high-rise residential buildings in the hot and humid climate of Malaysia. The primary objective of this study is to assess the effects of six glazing types on the indoor air temperature of the base case room oriented toward the southwest with a Window Wall Ratio WWR of 45% under both ventilated and unventilated conditions. The effects during daytime and nighttime are investigated separately. A computerized simulation tool (Virtual Environment by Integrated Environmental Solutions) is used to conduct the investigation. Penang is selected as the empirical background location of a hot and humid climate. The study found that reflective double glazing exhibits lower indoor air temperature throughout the day regardless of the ventilation condition, with an optimum improvement of up to 107% and 14% in unventilated and ventilated rooms, respectively, compared with single clear glazing. The study recommends the use of reflective single or double glass in regions with a hot and humid climate similar to that of Malaysia.

scholarly journals Assessment of Outdoor Air Temperature with Different Shaded Area within an Urban University Campus in Hot-Humid Climate

2020 ◽  
Vol 12 (14) ◽  
pp. 5741 ◽  
Author(s):  
Sheikh Ahmad Zaki ◽  
Siti Wan Syahidah ◽  
Mohd Fairuz Shahidan ◽  
Mardiana Idayu Ahmad ◽  
Fitri Yakub ◽  
...  
Keyword(s):  
Air Temperature ◽  
Field Measurements ◽  
High Ratio ◽  
View Factor ◽  
University Campus ◽  
Outdoor Air ◽  
Humid Climate ◽  
Urban University ◽  
Hot Humid Climate

This study investigated the variation of outdoor air temperature in the shaded area covered by buildings in an urban university campus in Malaysia. In-situ field measurements were conducted to measure the distribution of outdoor air temperature at eight different locations for seven days. Meanwhile, the building-induced shadows were generated using the AutoCAD Revit software to investigate the air temperature change. The study used four urban morphological parameters namely building to greenery ratio, sky view factor (SVF), and height-to-street width (H/W) ratio. The relationship between building-induced shadow and outdoor air temperature (Tout) obtained from the in-situ measurement was investigated. The results showed that the building-induced shadows could lower air temperature. It can be noted that a high ratio of building to greenery resulted in a higher air temperature. In contrast, the area with a low SVF value due to the combination of prolonged shading by buildings and trees had a lower air temperature. Thus, the area with a high building ratio, low greenery ratio, higher SVF value, and low H/W ratio potentially has a higher outdoor air temperature. Conclusively, combination of building shading created by appropriate ratio of building morphology and sufficient greenery able to improve the microclimate of a campus area.

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