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원안나,Won, An-Na 인천대학교 도시과학연구원 2020 도시과학 Vol.9 No.2
The Recently, several countries have been affected by respiratory diseases, resulting in renewed research interest in their prevention and control. One such example was the 2015 outbreak of Middle East Respiratory Syndrome (MERS) in South Korea and COVID-19. In this study, we performed experiments and simulations based on concentration decay using CO2 as the tracer gas to elucidate the pollutant-removal efficiency for different inlet and exhaust locations and outdoor air-supply ratios. The wall inlet exhibited a higher pollutant-removal efficiency, owing to the upward movement of the air from the lower zone to the upper one. In conclusion, it is recommended that a total air-conditioning plan for isolation rooms be established as well as efficient system operation for pollutant removal and air-flow control to prevent the transmission of infections from the patients to others.
다중이용쇼핑공간의 공조 최적제어를 위한 외기온별 표준 착의량 설정에 관한 연구
원안나,홍원화,이태동,양수현 한국건축친환경설비학회 2023 한국건축친환경설비학회 논문집 Vol.17 No.5
As the trend of seeking comfort in shopping and leisure activities gains popularity, the clothing insulation worn by visitors in multi-use shopping spaces differs from that in buildings intended for other purposes. To conserve energy in multi-use shopping spaces, known for their high energy consumption, while ensuring a comfortable indoor thermal environment, it is crucial to consider the Predicted Mean Vote (PMV) of visitors. Consequently, a regression equation was developed using actual measurements taken from June 2022 to March 2023, enabling the easy prediction of required clothing levels based on the outside temperature. The research results are summarized as follows: (1) When the outside temperature was 10°C, 20°C, and 30°C, the average clothing insulation (clo) for both men and women was calculated to be 1.00, 0.77, and 0.55, respectively. The difference between men and women did not show a significant variance within a margin of ±0.07. (2) The regression equation between the corrected outdoor temperature and clo is as follows: [y = -0.02251x – 1.2228]. (3) The recommended comfort temperature range for multi-use shopping spaces was approximately 16°C or higher for heating and 25°C or lower for cooling.
시뮬레이션을 이용한 제어조건 변화에 따른 천장 냉방복사시스템의 특성분석
원안나,이형우,홍원화 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.2
The demand for radiant cooling systems is increasing deamatically as the standard of living continues to improve. Especially, because of characteristic of heat transfer as cooling air comes down and warm air goes up, radiant cooling system beneath ceiling is more profitable than others system. The characteristics of heat transfer in the radiant cooling system beneath ceiling was investigated in use of simulation program. The radiant cooling system is intervened on air capacity and temperature. There are the variable numbers of air temperature and air velocity According to the results of thermal performance analysis simulation for cooling system beneath ceiling, control of cooling air temperature is more effective than control of its velocity.
다낭성 난소증후군의 난임치료에 대한 한약임상연구 경향 분석 -중국의 임상연구를 중심으로-
원안나 ( An Na Won ),최민선 ( Min Sun Choi ),김동일 ( Dong Il Kim ) 대한한방부인과학회 2014 大韓韓方婦人科學會誌 Vol.27 No.4
Objectives: The purpose of this study is to review the trend of chinese clinical studies of herbal treatment for infertility caused by Polycystic Ovary Syndrome (PCOS). Methods: We searched the clinical studies published from `` to ;0`` through CAJ (Chinese Academic Journal) with keywords of “PCOS and 不孕” or “多囊卵 巢綜合證and 不孕”. We analyzed the intervention type of clinical studies. In addition, We re-searched randomized controlled trials (RCTs) published from ;00 to ;0``, assessed the quality of RCTs using the Jadad Scale and reanalyzed the intervention type of RCTs. Results: One hundred and seventeen clinical studies were finally selected. Clinical studies of herbal treatment for infertility caused by PCOS increased remarkably after the ;000s in China. Combined herbal medicine and western medicine was used the most frequently. RCTs published from ;00 to ;0`` were fifty. Average of Jadad score of RCTs was ``.;. Combined herbal medicine and western medicine was also the most frequently used as intervention in RCTs. Conclusions: Clinical studies on effect of combined herbal medicine and western medicine for infertility caused by PCOS were mostly published in China. But Quality of studies was generally low. Further research on effect of herbal treatment for infertility caused by PCOS is needed.
가정 부문에서의 에너지 절약 행위에 따른 전기에너지 절약 효과 분석
원안나(Won, An-Na),손병훈(Son, Byeung-Hun),홍원화(Hong, Won-Hwa) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.8
With the improvement in economic power and diversification of living patterns, the demands of household energy-consumption devices have changed. The household energy consumption accounts for 20 percent of the entire energy consumption in Korea. Among household energy consumption, electric-power consumption is expected to increase as the number of household energy-consumption devices has been on the rise. The purpose of this work is to investigate the possibility of household energy saving through the "the way of reducing the use hours of devices and their use" as the other energy saving way than "choice of highly efficient devices". To achieve the purpose, this researcher conducted a questionnaire survey with 2,250 households in the country to look into the state of the possession and use of household energy-consumption devices. And we investigate into the energy-saving behavior. The results are as follows. First, A household possessed 16.21 household energy-consumption devices. when we are grouping by energy-saving behavior, there is no difference the numbers of energy-consumption devices. Two, group 1 can save energy-cost about 11,000won in the winter and 15,000won in the summer by energy-saving behavior.
송해은,원안나,김성용,이찬호,황정하 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.1
This study classified the space types of respiratory disease ward departments, in which secondary airborne infection is expected, into three and selected the ward department of M hospital with space type I as a target building. On-site visits were made to the wards, hallways, and rest areas of the ward department to measure indoor airflow, which was analyzed using the Star-ccm+ software. In the existing air-conditioning state, airflow occurred between one-person wards and the hallway, between five-person wards and the hallway, and between hallways and rest areas, indicating the possibility of secondary airborne infection in the hospital. As a measure to improve the secondary infection prevention in the hospital, [ALT-1] with zoning changes and partition door installation, [ALT-2] with ward rearrangement, and [ALT-3] with ward rearrangement and partition door installation were proposed. Among them, [ALT-3] was considered to have the low probability of air-borne infection because airflow mixing between wards did not occur.