Thermal environment as a management tool in high-rise building

2013 ◽  
pp. 131-136
Keyword(s):  
Thermal Environment ◽  
Management Tool ◽  
High Rise ◽  
High Rise Building

Numerical Simulation for Outdoor Thermal Environment of High-Rise Building With Air-Conditioner

2010 ◽  
Author(s):  
Zhen Zhang ◽  
Lige Tong ◽  
Li Wang
Keyword(s):  
Solar Radiation ◽  
Thermal Environment ◽  
Installation Space ◽  
Air Conditioner ◽  
Confined Space ◽  
Steady State Condition ◽  
Factors Affecting ◽  
High Rise ◽  
High Rise Building ◽  
Heat Released

A large number of split-type air conditioner are widely used in high-rise residential or office buildings in China and the outdoor units of air-conditioner are often installed at the sidewalls or on the roofs in the confined space of a high-rise building. The factors affecting the performance of air-conditioner are the solar radiation, the heat released from the outdoor units, the ventilation of the confined installation space of a building where the outdoor units are installed and so on, which are investigated in this study. The air flow and temperature distribution under steady-state condition near the two outdoor units installed on the same storey in a building are simulated by software FLUENT, in which the porous model and DO radiation model are used. The optimum installation distance from the supporting wall is obtained. The average temperature of the exit surface without wind is 1.18% more than that with wind. The results show that the heat released from the outdoor units and the ventilation of the confined installation space where the outdoor units are installed are the main factors affecting the thermal environment in the confined installation space; The influence of the solar radiation can be neglected.

scholarly journals THERMAL ENVIRONMENT OF AN ENCLOSED DEMOLITION WORK-SPACE OF A HIGH-RISE BUILDING

2013 ◽  
Vol 19 (41) ◽  
pp. 209-212
Author(s):  
Taiki SATO ◽  
Ken SHOJI ◽  
Hideki ICHIHARA ◽  
Kyoichi UMETSU
Keyword(s):  
Thermal Environment ◽  
Work Space ◽  
High Rise ◽  
High Rise Building

scholarly journals Airborne and Terrestrial Observations of the Thermal Environment of Urban Areas Surrounding a High-Rise Building during the Japanese Winter

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 517
Author(s):  
Haruki Oshio ◽  
Kan Chen ◽  
Takashi Asawa
Keyword(s):  
Remote Sensing ◽  
Urban Areas ◽  
Thermal Environment ◽  
Factors Affecting ◽  
Tokyo Metropolitan Area ◽  
High Rise ◽  
High Rise Building ◽  
North East ◽  
Strong Winds ◽  
Surrounding Areas

We investigated the distribution of air temperature (Ta) and the factors affecting it in low-rise areas surrounding an isolated high-rise building during the Japanese winter. The study site was the central part of a regional city in Japan (36°5′ N, 140°12′ E), lying north-east of the Tokyo metropolitan area. The daytime surface temperature (Ts) in the shade is generally considered to be comparable to Ta; however, according to airborne remote sensing conducted in December 2009 where a multi-spectral scanner was installed on a fixed-wing aircraft, Ts for pavements in the shade of a high-rise building was significantly lower than Ta of sub-urban areas, indicating an influence of cold storage on Ts. Then, we conducted mobile observations using instruments (thermocouple, four component radiometer, and so on) installed on a bicycle in January 2016 to investigate the detailed distribution of Ta and the factors affecting it. The results showed the Ta over the pavements in the shade of the high-rise building was lower than the Ta of sunlit areas in the same urban area by −2 °C and lower than the Ta of sub-urban areas by −1–1.5 °C, although the advection effect was large due to strong winds around the building. In conclusion, a locally lower Ta compared to the surrounding areas can develop during the day in winter, even in spaces that are open to areas beyond the canopy.

scholarly journals Numerical Simulation on the Heat Dissipation of the Outdoor Unit in the Groove of High-Rise Building

2021 ◽  
Vol 237 ◽  
pp. 03024
Author(s):  
Yuan Wang ◽  
Xiaoqing Zhou ◽  
Ju Tian ◽  
Chuansheng Liu ◽  
Jian Wang
Keyword(s):  
Numerical Simulation ◽  
Air Temperature ◽  
Heat Dissipation ◽  
Thermal Environment ◽  
Load Condition ◽  
Wind Condition ◽  
High Rise ◽  
High Rise Building ◽  
Hot Air ◽  
Mean Wind Speed

In order to study the influence of the heat dissipation of the outdoor unit in the groove of the highrise building. Numerical simulation of the thermal environment of a high-rise building is carried out. The results show that: When the outdoor mean wind speed is 2.7m/s, the maximum inlet air temperature of the outdoor unit under full load condition is about 43.3 °C, which is 2 °C lower than that under no wind condition. The monsoon is beneficial to the heat dissipation of the outdoor unit. When the hot air in the building groove rises, the corner flow is induced at the lower side of the refuge layer. Due to the reverse pressure gradient, the flow separation occurs, resulting in the blockage in the flow channel. When the air flows through the refuge layer, the flow expands suddenly due to the increase of the cross-section of the channel. The turbulent boundary layer is separated. The vortex region is induced on the upper side of the refuge layer. Since the heat on the upper and lower sides of the refuge floor cannot be effectively dissipated, the inlet air temperature of the outdoor unit is higher than that of other floors, which reduces the working efficiency of the outdoor unit.

Partial Collapse During Construction of a High Rise Building Due to Fire

2005 ◽  
Vol 90 (5) ◽  
pp. 42-48
Author(s):  
Predrag L. Popovic ◽  
Richard C. Arnold
Keyword(s):  
High Rise ◽  
High Rise Building
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