7. 계절별 육성돈사의 암모니아 배출량 평가

노희철,이승훈,김은종,김대훈,이명성,위지수,신진호,안희권 한국초지조사료학회 2019 한국초지조사료학회 학술대회논문집 Vol.2019 No.06

세정수 유형에 따른 소규모 습식 스크러버의 암모니아 저감효율 평가

노희철,김대훈,신진호,이승훈,위지수,안희권 (사)한국축산환경학회 2021 한국축산시설환경학회지 Vol.23 No.1

The influence of scrubbing liquid type on the ammonia removal efficiency of wet scrubber installed in pig fattening houses was evaluated. Ammonia concentrations, which were ranged from 18.0 ± 2.9 to 21.8 ± 3.4 ppmv at the inlet of the wet scrubber, were reduced to 17.3 ± 2.7, 15.5 ± 1.9, 13.0 ± 1.5 ppmv, respectively as a result of treatment with scrubbing liquid with water, base agent, microbial agent. It is generally known that wet scrubbers have an ammonia removal of 45~72%, but they have a low removal rate of 18~25% in this study. It was confirmed that there is a significant difference in the daily ammonia removal efficiency. The ammonia removal efficiency was 1.8~26 times higher at nighttime than daytime, which is seen as a result of changes in ambient temperature. The ambient temperature was about 2°C higher than that of scrubbing liquid during the day. The ammonia removal efficiency was decreased due to the ammonia volatilization as the ambient temperature increased. In maintaining the wet scrubber treatment efficiency properly, it is essential to select the scrubbing liquid type correctly and develop appropriate operation methods according to ambient temperature changes, so further research related to this needs to be conducted in the future.

PC 부재의 공장생산과 현장조립

노희철(Noh, Hee-Chul),이강철(Lee, Gang-Chul) 대한건축학회 2020 建築 Vol.64 No.7

민간제안 지구단위계획에서 공공시설의 기부채납 운용 특성

노희철(Roh, Hui-Cheol),황재훈(Hwang, Jea-Hoon) 한국도시설계학회 2009 도시설계 : 한국도시설계학회지 Vol.10 No.4

본 연구는 2008년 현재 청주시에서 결정된 36개 지구단위계획구역의 현황 및 특성을 분석하였으며, 기부채납시설을 중점적으로 분석할 민간제안 지구단위계획구역인 11개 사례구역을 대상으로 기부채납의 운영 특성을 규명하는데 연구의 목적이 있다. 연구 방법으로 기부채납의 운영 특성을 규명하기 위해 기부채납시설의 공간적(입지, 구역), 행정적, 조성시설별, 부담비율의 분석을 통해 운영 특성을 밝혀냈다. 이러한 방법으로 분석한 결과 첫 번째로 공간적(입지, 구역) 분석의 경우 사례구역별로 기부채납은 일정한 패턴이 보이진 않았다. 기존의 공공시설과 접근이 현저히 낮은 지역의 경우 기부채납 비율이 높은 것으로 나타났다. 두 번째 행정절차 분석은 기부채납에 의해 지구단위계획의 계획적 요소가 크게 변화되는 사례구역은 없었으며, 오히려 기부채납 수준이 높다 하더라도 계획 요소가 감소하는 사례구역도 있었다. 세 번째 조성시설별 분석을 통해 도출된 결과는 청주시는 도로를 기부하는 사례가 가장 많았으며, 다양한 형태의 기부채납은 이뤄지지 않았다. 마지막으로 부담비율을 분석한 결과 사례구역의 평균 부담비율은 1.22%부담 비율을 보이고 있으며, 전체적인 비율을 살펴보면 기부채납 비율이 상승될수록 기부채납으로 인한 사업비는 증가할 것으로 판단된다. This study has been analyzed the present status and characteristics of 36 districts selected for the district unit plans by Cheong-ju city in 2008, and its purpose is to examine the Land Donation-acceptance characteristics by focusing on analyzing the Land Donation facilities from the 11 districts by private proposal. Method of study analyzes that is for the purpose of clarifying the Land Donation-acceptance characteristics, the Land Donation facilities were examined based on the factors like space (location, district), administration, consisting facility, and charge expense ratio. Deduce result is as follows; Firstly, the spatial (location, district) significances result in the districts did not show any regular pattern. The rate of the contribution was found very high when the accessibility of the facility from existing pows; Ffacility was extremely low.nifiondly, administration process showed that the Land Donation acceptance did not change the planning factor of the district unit plans. Thirdly, the frequent facility of Cheong-ju city has been determined on the rccdhe spCheong-ju city even the result had a lack of variety. Finally, the charge expense ratio analysis of the districts was 1.22% in average. Overall rate shows that the business expense by the contribution tends to rise as the Land Donation-acceptance rate increases.

지하채널 환기시스템이 적용된 비육돈사의 외기온에 따른 암모니아 발생 특성 평가

신진호,노희철,김대훈,위지수,정우희,이승훈,안희권 (사)한국축산환경학회 2021 한국축산시설환경학회지 Vol.23 No.2

This study was conducted to evaluate the ammonia emission characteristics depend on outside temperature variation, from swine finishing barn installed with ground channel ventilation system. Because the temperatures of outside air were tempered in the ground channel before flowed into the swine barn, the seasonal differences in ventilation rate were not greater than the general levels. Therefore, cold weather ammonia emissions (62.4 ± 9.4 g day-1 AU-1) were higher than those (54.8 ± 6.3 g day-1 AU-1) of hot weather (p < 0.05), which result was different from the general trend. In the case of swine barn installed with temperature control system caused less ventilation rate differences during cold and hot weather, it is possible to improve the room air condition during cold weather and reduce the hot weather ammonia emissions.

사육온도가 돼지의 장내발효 메탄 배출량에 미치는 영향

김대훈,신진호,노희철,위지수,이승훈,안희권 (사)한국축산환경학회 2022 한국축산시설환경학회지 Vol.24 No.1

This study was conducted for the purpose of evaluating the amount of enteric fermentation methane emission from pigs according to the breeding temperature. The external structure was manufactured using flexible glass and profile, and It was made by sealing the emitted methane so as not to leak out. The inlet and exhaust were manufactured, and a ring blower was installed at the exhaust to circulate air, and the real-time flow rate was measured with a mass flow meter. Methane concentration and temperature were measured in real time using an automatic measuring system. The experimental pigs was conducted for two days at low temperature (13°C) and high temperature (25°C) on two 6-month-old fattening pigs, and feed was supplied at 09:00 am and 15:00 pm twice a day and the pigs were given free access to water. As a result of the study, the methane concentration was 14 ppm at low temperature and 21 ppm at high temperature, which was about 33% higher than that at low temperature (p < 0.05), and 6.5 g per day at high temperature (p < 0.05) and 4.6 g per day at low temperature were emitted. As a result of analyzing the dry matter digestion rate of feed intake and excreted manure, 74.08% at low temperatures and 71.10% at high temperatures, showing similar results to previous studies. Therefore, the digestivility was related to the amount of methane generated, and the lower the digestion rate, the higher the methane emission.

보행환경설계를 위한 직ㆍ간접 요인의 중요도 분석

정광섭(Jeong, Gwang-seop),노희철(Roh, Hui-Cheol),황재훈(Hwang, Jea-Hoon) 한국도시설계학회 2010 도시설계 : 한국도시설계학회지 Vol.11 No.1

본 연구는 보행환경을 설계하는데 있어 도시, 건축, 조경, 교통부문에서 종합적으로 고려해야 할 설계요인을 검토하고 중요도를 산출하였다. 새로운 패러다임과 탈장르화 시대에 도시의 여러 환경 중 보행환경을 계획하고 설계하는데 있어 직ㆍ간접적으로 고려해야 할 설계요인의 가치를 정량화하였으며, 기존의 연구방법론에서 고려하지 못한 설계요인들 간의 상관관계를 반영하였다는 점에서 논문의 의의가 있다. 세부설계요인의 중요도를 살펴보면, 건물측면에서는 건물전면폭, 주출입구와의 연계성, 건물형태가 주요설계요인으로 나타났으며, 건물외부측면에서는 식재, 편의시설, 조명시설이 보행환경설계 시 고려해야 할 설계요인으로 파악되었다. 보행자도로측면에서는 보행안전시설, 보행량, 보행자도로규격이 높은 순위를 차지하였으며, 자동차도로측면에서는 간접적 요인인 사고기록과 제한속도가 주요설계요인으로 부각되었다. 향후 보행환경 설계요인과 관련하여 토지이용특성의 고려와 전문가설문조사 결과의 신뢰도를 높여 나간다면, 보행환경 설계에 참여하는 각 분야의 전문가들이 참고할 수 있는 정량적, 수치적 근거를 제공할 수 있을 것으로 사료된다. This study examined design factors that should be comprehensively considered in the fields of urban plan, architecture, landscape architecture and transportation upon designing pedestrian environment and calculated the priority with them. This study has its own significance as followings: (1) it quantifies the values of direct/indirect design factors that should be importantly considered upon planning and designing pedestrian environment at the time of facing a new paradigm and hybrid. (2) it looks over the relationship among design factors that have not been considered in the previous studies. If we consider the land-use characteristics nd increase the reliability of survey result on expert regarding pedestrian environment design factors, we could be able to provide standards to specialists involved in the pedestrian environment design.

청주시 가로공간의 위계별 구성요소의 중요도 설정

전상규(Jeon, Sang-Gyu),노희철(Roh, Hui-Cheol),황재훈(Hwang, Jea-Hoon) 한국도시설계학회 2012 도시설계 : 한국도시설계학회지 Vol.13 No.4

본 연구는 보행 및 차량의 통행을 병행할 수 있는 가로공간에 관하여 위계별 중요도를 도출하고자 한다. 이를 위해 가로공간을 도로의 종류별 규모로 설정하여 가로공간의 구성요소를 선행연구와 관련문헌을 통해 도출하였다. 도출된 가로공간 구성요소를 바탕으로 전문가 설문조사를 실시하였다. 설문조사·결과는 다음과 같다. 첫째, 대로의 경우 이동 및 통과가 주 기능이므로 구성요소 역시 이동 및 통과와 관련되어진 요소에 맞춰 계획이 이루어져야 한다. 둘째, 중로의 경우 이동과 통과의 기능과 함께 체류의 성격도 있다. 따라서 도시민의 행태에 의한 문화적 특성요소, 이동과 통과, 상젓공간을 감안한 안전성에서 중요도가 높게 분석되었다. 셋째, 소로의 경우 공간을 이용하는 행태가 반영되어진 요소들로 중요도가 분석되었다. 또한 소로는 구조적 특성상 안전성을 중요시해야 한다. 따라서 본 연구의 결과를 바탕으로 도로의 위계별 접근을 통해 구성요소의 조성이 이뤄져야 가로공간의 질적 향상을 도모할 수 있다. This research draws the hierarchical weighting rate of the constituents of the street-space for both pedestrian and vehicle. For this purpose, a suggested types of the street-space was set up according to the scale and the component elements considering the advanced research and relative theory. The expert survey was performed based on the drawn street-space component elements. The survey result is as follows. First, in the case of the main road, since the circulation and traffic capacity are the main functions, the plan should be adjusted to the component related to the circulation and traffic. Second, in the case of the middle-size road, there is a tendency of the abiding by with all traffic issue. Therefore, the importance was highly estimated in the safety considering inconsistency space, cultural element, and circulation and traffic by behavior of the citizen. Third, in the case of the narrow path, the importance was on behavioral elements such as the use of the space. In addition, safety is issued by structural characteristic in the narrow path. The result of this research through the access of hierarchy of the road can assist the physical plan, which could enhance the quality of the street-space.

60. 무창 비육돈사의 계절별 암모니아 배출량 평가

신진호,이승훈,김은종,김대훈,이명성,노희철,위지수,안희권 한국초지조사료학회 2019 한국초지조사료학회 학술대회논문집 Vol.2019 No.06

3. 액비순환식 돈사의 사육단계별 암모니아 및 황화수소 배출량 평가

김대훈,이승훈,김은종,이명성,신진호,노희철,위지수,안희권 한국초지조사료학회 2019 한국초지조사료학회 학술대회논문집 Vol.2019 No.06