• Journal of the Korean Institute of Landscape Architecture
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• v.37 no.4
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• pp.94-99
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• 2009

The purpose of this study was to utilize hydroculture by the vital means of the improvement of indoor relative humidity. This experiment employed a search of the effect of Scindapsus aureus and Syngonium podophyllum that are generalized for hydroculture foliage plant by a difference of volume ratio, pot media and plants species. In the case of Scindapsus aureus, relative humidity was high for growth chamber in which plants presented as opposed to control growth chambers in which there were no plants. Although relative humidity was 25% in control chamber, there was an increase of 40% at a 2% volume ratio, 45% at a 3% volume ratio and 50% at a 5% volume ratio. The relative humidity of Syngonium podophyllum was 40% at a 2% volume ratio, 44% at a 3% volume ratio and 46% at a 5% volume ratio, while the control treatment was 25% relative humidity in hydroculture. Both the control treatment and hydroball pot in a hydroball container were high at first. As time progressed, artificial soil pots in water containers was similar when housed within the control chamber by about 45% relative humidity. Hydroball pots in water container had about 30% relative humidity. Ardisia pusilla of hydroball poIt in hydroball container had about 38% relative humidity.

• 건강소식
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• v.26 no.2 s.279
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• pp.36-37
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• 2002

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.389-392
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• 2018

In this paper, we try to make a pleasant environment by adjusting the fan moving by temperature and humidity in hot and humid room. To do this, we propose a fuzzy-based fan control using room temperature and humidity, collect environment data such as indoor temperature and humidity using Arduino, transmit it to Bluetooth communication, and adjust the operation time of fan according to fuzzy logic. To do this, connect a temperature and humidity sensor to the Arduino hardware, write the source code using the Arduino program on your computer, and code it in Arduino. Then, the environmental data obtained after collecting environmental data such as humidity from Arduino is transferred to the Arduino Control Module through Bluetooth communication. We use the fuzzy logic to control the time of fan operation according to environmental data such as temperature and humidity. At the end of this process, the fan will operate according to temperature and humidity to create a pleasant environment. Through this study, Arduino was simpler and easier to use than I thought, and I think it's easy to use and can be used in real life by using Arduino hardware, data acquisition, fuzzy logic, and control.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1781-1782
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• 2007

건축물의 냉방 난방 제어를 위해서 열쾌적성과 에너지 절감에 기술이 집중되어서 발생하는 실내공기 오염에 대해서 실내 냉방 난방 부하와 $CO_2$ 농도에 따라서 환기량을 조절하는 "온도 습도 $CO_2$ 검출 및 제어용 멀티캐스트 컨트롤러"(이하 "컨트롤러")를 개발하였다. 컨트롤러의 어플리케이션은 뉴런C로 프로그램 하였으며 자동제어 네트워크의 환경에 따라서 전용선, 전력선 및 무선 통신 방식을 적용할 수 있도록 모듈형태로 제작하여서 현장 적용성을 높였다. 연구 결과 온도, 습도 및 $CO_2$를 분석하여 환기량을 조절하여 낭비 에너지를 줄였고 실내 공기의 오염을 예방하게 되었고 멀티캐스트 방식으로 자동제어 네트워크의 통신트래픽이 감소되고 효율성을 높였다.

• FLOWER RESEARCH JOURNAL
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• v.16 no.1
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• pp.1-6
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• 2008

This study investigated the changes of indoor thermal environment by Ardisia species planted in indoor space. Three Ardisia species (Ardisia japonica, Ardisia crenata and Ardisia pusilla) were used in this study and differences of temperature and relative humidity were ascertained in an empty chamber with and without plants. In high temperatures over $24^{\circ}C$, Ardisia species cooled down chamber more as compared to the control without plants, but there were no significant differences among Ardisia species. Ardisia crenata showed high relative humidity of $57.3{\pm}3.1%$ during most of the day time and $60.8{\pm}2.5%$ at low temperatures. However, Ardisia japonica and Ardisia pusilla showed $54.7{\pm}1.18%$ and $52.5{\pm}2.4%$, respectively, on the average, and they maintained comfortable relative humidity during most of the day time. When the setting temperature was decreased from 28 to $26^{\circ}C$, Ardisia species showed 7.5~13.6 times greater cooling efficiency as compared to the control without plants, and at low temperatures the chamber without plants showed higher themal energy than the chamber with plants. Ardisia species were effective on cooling down the temperature at high temperatures and they showed a tendency to maintain proper temperatures at low temperatures.

• KIEAE Journal
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• v.11 no.3
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• pp.31-36
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• 2011

People spend most of their time inside buildings recently, so the indoor air quality is one of the most important factors to human health. Furthermore, minimum energy use with proper ventilation systems for pleasant indoor environment is necessary because of energy shortage over the world. The concern to maintain proper indoor air quality at home has been increased, and a proper indoor air quality is continuously requested by the residents. By measuring and analyzing the density fluctuation of $CO_2$ through indoor humidity and testing personal reactions regarding comfort condition, we can obtain a way to effective ventilation. Heat and carbon dioxide emissions from resident's metabolism and construction materials could be the causes of indoor air pollution. If these materials stay indoors for a long time, it could directly influence the resident's health condition with diseases. It also leads massive energy use. Therefore, the way to save energy and to have effective control of indoor ventilation is needed. This study presented the control method of bedroom ventilation by $CO_2$ concentration change and subjective evaluation.

• Journal of the Korean Society of Industry Convergence
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• v.4 no.3
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• pp.229-236
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• 2001

이 논문은 미국의 중심부인 텍사스주에 위치하는 평화 주택의 실내외 환경을 측정하여 쾌적한 조건을 분석한 기초자료이다. 이 사례연구는 주택의 실내외온도, 습도, 그리고 이산화탄소농도를 측정하여 쾌적한 조건을 만드는 범위에 대하여 검토하였다. 이 논문은 또한 부가적인 비용의 증가 없이 평화 주택이 보다 쾌적한 실내환경을 계획할 때 이용할 수 있는 자료로 활용하는데 연구의 목적이 있다.

• Land and Housing Review
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• v.5 no.4
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• pp.291-296
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• 2014

The apartment buildings were hard to emission of water vapor by reduced infiltration. The purpose of this study was to investigate the generation of indoor temperature and humidity in the recent construction of small size apartment buildings. The temperature and humidity were measured in 3 apartments in Seongnam and Daejeon city. During the winter indoor temperature and relative humidity were measured ranged from 20 to $24^{\circ}C$ and 40 to 60%. Generated humidity caused by various characteristics of the residents, rather than external influences. Compare daytime (6:00 to 22:00) and nighttime (22:00 to 6:00), the temperature is low and absolute humidity is high at nighttime. Condensation is likely to occur at nighttime. Using the cumulative relative frequency and absolute humidity, small apartments design criteria (temperature, relative humidity) can be set.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.34 no.7
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• pp.697-702
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• 2010

An enthalpy exchanger in which heat and moisture transfer occur between the indoor and outdoor air operates at various outdoor conditions. In this study, the effect of the outdoor-air temperature and humidity on the performance of an enthalpy exchanger was experimentally investigated. An apparatus was specially-made to accurately measure the incoming and outgoing dry- and wet-bulb air temperatures as well as the flow rates. Tests were conducted in constant-temperature and constant-humidity chambers at different outdoor temperatures and humidities. It is shown that the effectiveness of latent-heat exchange increases as the relative humidity increases; further, this effect exhibited minimal dependence on the absolute humidity. However, the effectiveness of sensible-heat exchange is independent of both temperature and humidity

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.154-155
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• 2015

본 연구에서는 온도와 습도 데이터를 수집하여 주택의 실내 온습도를 제어하는 시스템을 제안한다. 제안하는 시스템은 IoT 기반이 되는 아두이노와 센서들을 활용하여 수집한 데이터를 에이전트 서버에 저장 관리한다. 에이전트 서버는 저장된 데이터를 기반으로 하여 주택의 실내 온습도를 제어하여 쾌적한 주거 환경을 제공한다.