• KAPE Magazine
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• s.252
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• pp.10-11
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• 2017

1988년 홀로 계신 어머님 부양을 위해 당시 잘 되고 있는 운수업을 정리하고 공기 맑고 경치 좋은 그의 고향인 김해로 내려와 한우를 사육하기 시작한 대동농장의 최영주 대표. 처음부터 농부가 아니었기에 많은 시행착오를 거듭했다는 그는 29년째 한우사육 노하우로 오늘의 대동농장을 이루었다. 그는 한해 동안 전국에서 가장 우수한 등급판정결과를 받은 농가를 선정하는 시상인 축산물품질평가원에서 주관하는 제14회 전국축산물품질평가대상 시상식에서 당당하게 한우부문 우수상을 수상한 저력이 있다 최영주 대표를 만나 그의 한우사육 노하우를 들어보자.

• Journal of the Korea Institute of Military Science and Technology
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• v.10 no.4
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• pp.168-175
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• 2007

In this study, the Indoor Air Quality(IAQ) in military barracks is evaluated and its characteristics is discussed as well. The military barracks of R.O.K Army are categorized into three types and the IAQ in these individual facilities is measured for 24 hours both in summer and winter. Test results show that the particulate matters($PM_{10}$) and carbon dioxide($CO_2$) were the main causes contaminating IAQ in military barracks. While $CO_2$ can be purified by ventilation, adequate facilities have to be installed in case of the new type of combination barracks to remove $PM_{10}$. In addition, to improve the living condition of military barracks and to recover IAQ in new combination style barracks which is planned to complete by 2011, a standard or law regulating IAQ in military barracks has to be established.

• Resources Recycling
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• v.15 no.3 s.71
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• pp.30-37
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• 2006

For keeping the indoor air quality, we develop the pulsating heat pipe(PHP) type heat recovery ventilator using an used radiator for vehicles. We compare the PHP type with existing model. There are some merits that are able to change the unit number according to heat load and show us the similar performance to existing models.

• Journal of the Korean Institute of Educational Facilities
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• v.11 no.2
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• pp.17-23
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• 2004

The purpose of this study concerns the improvement of air quality in school classrooms. Polluted indoor air is improved by efficient ventilation systems. So it is important to measure the amount of ventilation needed in classrooms. First, the amount of natural ventilation were measured through a tracer gas method. And we have established a heat recovery ventilation system from 4 cases of airflow in classrooms, and we have measured the change of $CO_2$ density. According to air quality measurements in the classrooms, the density of $CO_2$ is well above environmental standards which are acceptable. When the amount of ventilated airflow increases, indoor air quality is improved. It is surveyed that the most suitable amount of external inducted air is 770 CMH to satisfy $CO_2$ less than 1,000 ppm in classrooms. For improvement of air quality in classrooms, we must consider a suitable ventilation plan and installation of ventilation systems when constructing school buildings.

• Journal of the Korea Society of Computer and Information
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• v.15 no.11
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• pp.195-204
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• 2010

In this paper, we propose an efficient indoor environment management system which provides the environment management service in ubiquitous computing environment. It is designed to gather data from the user's environment and keep it pleasant with respect to indoor air quality regulation. In order to offer such service Ubiquitous Computing Environment used distributed framework based on the active model for its development and support, while supporting service integration and also we used service oriented architecture. In order to verify the performance of the environment management system, components showed operation while environment management service showed the result through GUI screen.

• Journal of Environmental Science International
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• v.7 no.5
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• pp.573-580
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• 1998

This study examined the carbon dioxide ($CO_2$) pollution inside vehicles under low ventilation condition and evaluated the Air Quality System (AQS) for in-vehicle air quality using two techniques. The low ventilation condition is not recommended in order to keep oxygen-rich condition inside vehicles. Under the low ventilation condition, the in-vehicle $CO_2$ concentrations exceeded 1,000 ppm, the air qualify guidelines in the United States, Western Europe, and Japan, indicating more oxygen deficiency inside vehicles. On the contrary, with the AQS-on condition, the in-vehicle $CO_2$ concentrations were less than 1,000 ppm fer most of the driving time, indicating that the AQS could solve the problem of $CO_2$ accumulation inside vehicles under the low ventilation condition. The AQS test conducted by comparing carbon monoxide (CO) and volatile organic compound (VOC) concentrations inside two vehicles indicated that the AQS effectively decreased the in-vehicle concentrations by 21 to 36%, as compared to medium ventilation condition with the windows closed, the vent opened, and air conditioning on. In addition, The AQS test conducted by comparing the interior and exterior concentrations indicated that the AQS effectively decreased the in-vehicle concentrations by 18 to 31%, as compared to medium ventilation condition.

• KIEAE Journal
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• v.9 no.1
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• pp.85-90
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• 2009

The indoor air quality is one of the most important issues of designing ventilation in high rise apartment buildings. This study suggested proper ventilation rate in the apartment bedroom where mechanical ventilation system has installed. Six university students(four male and two female) were participating in the experiment. Experiments were performed in environmental chamber. Experimental conditions were combinations from three ventilation rate 0, 0.4 and 0.7. Measurement items during 8 hours of experimental time were temperature, humidity, carbon dioxide concentrations and questionnaire surveyed aftrer sleeping. The concentration of Carbon Dioxide depending on ventilation rate in the chamber was analyzed for proper ventilation rate. The results of this paper can be summarized as follows. (1) When two persons experiment, 0.7 ventilation rate was in excess of 1000ppm. (2) When one person experiment, 0.7 and 0.4 ventilation rates were satisfied the criteria of IAQ. (3) It compared 0.4 with 0.7 in the ventilation rate, 0.4 ventilation rate could reduced about 80% of the power by fan similarity law.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.06a
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• pp.29-30
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• 2020

As the modern society enters, the building becomes sealed and the public's interest in the environment increases, so the interest in indoor air pollution increases and the environmental pollution is raised as an important issue not only outdoors but also indoors. In addition, the emergence of sick house syndrome (SHS) has increased the interest in formaldehyde and is a cause of deteriorating indoor air quality. Accordingly, this study prepared a functional paint by incorporating a photocatalyst in an aqueous paint, and conducted formaldehyde adsorption experiments and functional evaluation. As a result of the experiment, as the photocatalyst was added, the formaldehyde adsorption performance tended to increase. In addition, as a result of measuring the impact resistance and alkali resistance according to the KS standard, there is no difference in residual cracks and cracks between the water-based paint without the photocatalyst and the water-based paint with the photocatalyst added. Therefore, it is considered that the water-based paint added with a photocatalyst can improve the indoor air quality by adsorbing formaldehyde and can be used as a functional paint because the functionality is not different from that of a general water-based paint.

• Information and Communications Magazine
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• v.28 no.5
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• pp.15-20
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• 2011

본고에서는 IT기술과 건설기술의 융합 기술로서 스마트빌딩 기술에 대해 서술한다. 고층 빌딩의 안전성 평가를 위한 건물구조 건전도 모니터링 기술, 빌딩 실내에 쾌적한 공기 환경을 유지하기 위한 스마트 공기질/환기제어시스템 기술, 빌딩 설계부터 빌딩 사용단계까지 빌딩정보의 체계적인 데이터 관리를 위한 빌딩정보 모델링 기술과 빌딩 운영관리 인터페이스 기술 등에 대하여 소개한다. 또한, 세종대학교에서 개발한 프로토타입으로 빌딩에 설치하여 시험 중인 시스템에 대하여 설명한다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.04a
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• pp.249-250
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• 2000

현대인들은 24시간 중 70∼80%의 시간을 실내에서 보내고 있는 것으로 보고되고 있으며, 1980년대 이후 실내에서의 일일 노출시간 증가, 한정된 공간에서의 오염된 공기의 지속적 순환, 에너지 절감 시스템에 의한 건물의 밀폐화에 따른 오염농도의 누적현상, 다양한 건축자재 및 생활 인테리어 용품의 사용으로 인한 실내 오염원의 존재 등으로 실내 공기질 악화에 따른 건강 영향에 대해 관심이 고조되기 시작하였다. (중략)