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제목 Perils of living in high-rise towers: how heat, humidity, and pollutants affect residents
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작성일 2020.02.19 15:43:23 조회수 42
summary Scientists studied the indoor air quality in a high-rise building to determine how living conditions
prof. 도시건축학부 윤성민 교수님

 

PRESS RELEASE                                                                                             

 

Perils of living in high-rise towers: how heat, humidity, and pollutants affect residents

 

Scientists studied theindoor air quality in a high-rise building to determine how living conditions varied for residents on different floors

 

High-rise towers provide an elegant solution to problems of housing shortage in densely populated cities, but they also have certain disadvantages. In a new study, scientists found out how the presence of contaminants, vapor, and heat affects the residents of high-rise buildings. Their findings encourage developers to consider airflow at the design stage, which could lead to a better, more comfortable living environment in high-rise towers.

 

1

Air quality differs on specific levels of high-rise buildings, as scientists demonstrate.
Photo courtesy: Shutterstock

The risks of living in urban cities are well known, especially those caused by overpopulation in certain areas. For many such people living in highly populated regions, high-rise buildings serve as an elegant solution to the accommodation problem—particularly in major metropolitan cities. As appealing as it may seem, living in high-rise buildings has its own disadvantages. For example, in cold regions, a phenomenon called “stack effect” is common, which is caused by the temperature difference between the inside and the outside of a building. This can result in strong drafts or excessive airflow through doors, unpleasant noise, and operational issues with elevators and doors. Not just this, excessive smoke, odor, and contaminants can cause various health problems in residents. And thus, to tackle these issues, it is crucial to understand the exact effects of living in these buildings.

 

In a new study published in Building and Environment, scientists at Incheon National University, Korea, led by Dr. Sungmin Yoon, dug deeper into how heat, humidity, and contaminants affect those living in high-rise residential buildings. Prof. Yoon says, “The weather-driven airflow in a high-rise building determines the indoor air and environmental quality. We aimed to find out more and thus improve the living conditions in these buildings.

 

The scientists studied a 110-meter tall, high-rise tower in Seoul during winter, when the stack effect is predominant. They measured the level of carbon dioxide (CO2), heat, and humidity on the 7th, 13th, and 29th floors (the lowest, middle, and highest floors, respectively). The researchers found that indoor air is stagnant on the middle floors owing to the stack effect. Not only this, they found that residents on the top floors were highly exposed to heat, humidity, and contaminants like CO2, compared to those living on the lower floors of high-rise building. They noted that this was because the outdoor air easily flowed into the lower floors through the entrance of the building, but to reach top floors, it moved upwards through elevator and staircases. Dr. Yoon noted, “This type of airflow significantly affects the ventilation, heating, indoor air quality, noise, and drafts in high-rise buildings.”

 

With those living on the top floors being the worst affected, this study shows the importance of providing suitable ventilation for residents at higher levels. Dr. Yoon concludes, “Careful consideration for the indoor environmental differences by floor is necessary in high-rise building design and construction. The way in which air flows in high-rise buildings should therefore be considered during their design, construction, and operation stages.”

 

A penthouse apartment in a fancy high-rise building does not sound all that appealing now, does it?

 

 

Reference

Authors:

Doosam Song,1* Sungmin Yoon,2** Chanwoul Jeong,3 Joowook Kim,4 Hyunwoo Lim5

Title of original paper:

Heat, vapor, and CO2 transportation caused by airflow in high-rise

residential buildings

Journal:

Building and Environment

DOI:

https://doi.org/10.1016/j.buildenv.2019.106176

Affiliations:

1School of Civil, Architectural Eng. and Landscape Architecture, Sungkyunkwan University, 2066 Seobu-ro, Suwon, 16419, Republic of Korea

2Division of Architecture and Urban Design, Incheon National University, Incheon, 22012, Republic of Korea

3Samsung C&T Corporation, Sangil-ro 6-gil, Seoul, 05288, Republic of Korea

4Center for Built Environment, Sungkyunkwan University, 2066 Seobu-ro, Suwon, 16419, Republic of Korea

5Ecotope, Inc. 1917 1st Ave. Suite 301, Seattle, WA, USA

 

*Corresponding author’s email: dssong@skku.edu

**Corresponding author’s email: syoon@inu.ac.kr

 

 

About Incheon National University

 

Incheon National University (INU) is a comprehensive, student-focused university. It was founded in 1979 and given university status in 1988. One of the largest universities in South Korea, it houses nearly 14,000 students and 500 faculty members. In 2010, INU merged with Incheon City College to expand capacity and open more curricula. With its commitment to academic excellence and an unrelenting devotion to innovative research, INU offers its students real-world internship experiences. INU not only focuses on studying and learning but also strives to provide a supportive environment for students to follow their passion, grow, and, as their slogan says, be INspired.

 

Website: /mbshome/mbs/inuengl/index.html

 

About the author

Dr. Sungmin Yoon is an Assistant Professor at the Incheon National University, South Korea. He received his Ph.D. degree from the Department of Architectural Engineering at University of Nebraska-Lincoln in 2018. His main areas of research include building airflow and smart buildings. He is currently focused on virtual sensing-based fault detection and diagnosis in a building. In 2019, he was awarded the Best Paper Award by the Journal of Building and Environment.



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