• 한국주거학회논문집
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• 제22권6호
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• pp.61-69
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• 2011

Korea's traditional house type, the Hanok, has been the essence of Korean domestic culture for hundreds of years. However, Hanok, have begun to disappear as result of urbanization. Because mud walls are crude and weak in water walls are also easily broken by impact. There are further problems in that construction cost is expensive and takes more time than modern house construction, and that the maintenance of Hanok is more difficult than people sometimes predict. Despite much interest in Hanok construction, there is a lack of in younger generation. Thus seeking new ways of maintaining Korea's traditional housing culture and extending Korean traditional houses is important. This study proposes directions for creating new residential environments for the future generation of Korea. A Dry-wall alternative to the Korean traditional mud wall is particularly needed. Dry-walling, made by sustainable materials such as mud board and wood, can strengthen the advantages and make up for the weaknesses of the Korea traditional mud wall. In this study, both wall types underwent various evaluations in terms of their performance in insulation testing, freezing and thawing testing, impacting testing and weight measuring (the size of material in this experiment was $69cm{\times}105cm$). On all of these tests, findings revealed that the dry-wall alternative performed better than traditional mud wall.

• Journal of the Korean Wood Science and Technology
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• 제45권2호
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• pp.147-158
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• 2017

Among the energy consumption in building, the heating energy takes the largest part. Therefore, it is important to minimize the heat energy loss in building for the reduction of overall energy use in construction. The most important points for the minimization of energy loss in building are insulation and airtightness. Especially, in wood houses, airtightness is very important for energy saving as well as increase of durability. However, the researches on airtightness of wood buildings have been started recently and are very deficient especially in Korea. In this study, air leakage properties and airtightness performance were evaluated for light-frame wood houses built in Daejeon and Chungnam area. Total 7 houses were evaluated, among which four houses (Case 1 to Case 4) were in the construction stage before interior finish and the other three houses (Case 5 to Case 7) were after completion of construction work. The tests for airtightness were conducted by pressurization-depressurization method, and the factors included in the measurements includes air leakage rate at 50 Pa (CMH50), air change rate at 50 Pa (ACH50), equivalent leakage area (EqLA) and EqLA per floor area. As a result of this study, key air leakage points in wood houses were found to be the gaps between floor and wall, the holes for wiring and plumbing, the double glasses windows and the entrance doors. The average value of ACH50 for the houses after completion of construction work was $3.5h^{-1}$ that was similar to Europe standard ($3.0h^{-1}$). ACH50 was proportional to EqLA per floor area but inversely proportional to the internal volume, the net floor area and the area of window.

• 한국산학기술학회논문지
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• 제20권3호
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• pp.609-616
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• 2019

본 논문에서는 재난 재해시 이재민의 주거안전성을 확보하기 위해 단기 임시주거시설에 대한 설계 계획과 목업 제작을 통한 시공성, 주거환경성을 검증하였다. 특히, 재난 재해발생시 이주민이 응급구호시설로 인근 학교의 강당 또는 체육관을 활용하고 있지만 거주성이 확보에 문제가 있다. 이를 극복하기 위한 방안으로 30일 이내 거주하는 단기 임시주택을 제안하는 것이 연구목적이다. 이를 위해 경량이면서 단열이 확보가능한 복합패널을 선정하여 목업을 제작하였다. 복합 패널을 활용한 목업은 약 1시간안에 완성하여, 시공 용이성을 확인하였다. 또한 목업을 통해 실험실에서 결로와 누수실험을 진행하였다. 외부온도 약 $0^{\circ}C$, 실내온도 약 $32^{\circ}C$로 온도에서 결로현상은 발생하지 않았고, 열화상카메라를 통해 확인해보면 단열성능이 확보되는 것으로 판단되었다. 또한 시간당 60 mm의 강우를 모사하여 누수 실험을 진행한 결과 누수가 확인되지 않아 방수성능이 확보되는 것으로 판단된다. 본 연구는 기존 임시주거시설에서 모듈화된 평면, 시제품제작을 통한 시공용이성 확보, 향후 적재의 용이성을 확인하였다. 단열 및 방수성능이 확보되는 것을 확인하였다. 이를 통해 단기 임시주거시설에 대한 대안을 제시하였다.

• KIEAE Journal
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• 제16권5호
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• pp.73-79
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• 2016

Purpose: In order to improve the energy performance of existing buildings, so actively promoted green remodeling business. Also, improvement of the performance of envelope system of apartment housing is an absolute. The purpose of implementation of the data base and application plan of the envelope system for green remodeling of apartment housing. Method: For this study, It proposed a classification system of green remodeling envelope system constructed actual to select the applicable representative method and input material of apartment housing for green remodeling. In this study, divided into construction waste processing stage and production phase of the material for the boundary of the system, and implementation the classification system of the envelope system for applicable green remodeling. For this, established 6 environmental impact categories database. Result: As a result of various suggestions were available for case study research, alternative combinations of existing combinations than six kinds of environmental impact insulation system with superior input materials combining 96 kinds, window system, 12 kinds for determining the applicability of the established database. Depending on the account for a large proportion if compared to the detailed analysis of the environmental impact resulting from the production phase and disposal phase was analyzed that the operating management of the necessary input materials. Is considered that the economic performance and integrated energy performance required by the applicable public housing green remodeling evaluation techniques considered for future improvements insulation sheath.

• 한국주거학회논문집
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• 제21권6호
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• pp.91-98
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• 2010

The purpose of this study is to develop the feasibility of movable partition wall components that are able to correspond changes of structure system and spatial configuration by the needs of residents for the activation of long-life housing. The key element of various movable partition wall components, a movable partition wall, was analyzed for problems through both as-is analysis and field installation in Korea and Japan, and then its feasibility was verified. The movable partition wall can break the uniformity of a fixed one, can integrate and separate limited space by changes in the demands of residents, can be easy to separate, and can be independent. The development of the movable partition wall is important for the realization of diverse residential space, ease of remodeling, environment adaptation, promotion of modularization, etc. It is comprised of surfacing materials, core materials, structural materials, and movable parts. The domestic movable partition wall was verified regarding the feasibility of an apartment house through on-site inspections and sound insulation tests by KOHP21, KICT. In conclusion, the construction of long-life housing that has sustainable values in the use of housing is nationally an important assignment, so as to secure good housing stock.

• 국제초고층학회논문집
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• 제7권4호
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• pp.363-374
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• 2018

The façade is an important, complex, and costly part of a building, performing multiple objectives of value to the occupants, like protecting from wind, rain, sunlight, heat, cold, and sound. But the frequency of façade fires in large buildings is alarming, and has multiplied by seven times worldwide over the last three decades, to a current rate of 4.8 fires per year. High-performing polymer based materials allow for a significant improvement across several objectives of a facade (e.g., thermal insulation, weight, and construction time) thereby increasing the quality of a building. However, all polymers are flammable to some degree. If this safety problem is to be tackled effectively, then it is essential to understand how different materials, and the façade as a whole, perform in the event of a fire. This paper discusses the drivers for flammability in facades, the interaction of facade materials, and current gaps in knowledge. In doing so, it aims to provide an introduction to the field of façade fires, and to show that because of the drive for thermal efficiency and sustainability, façade systems have become more complex over time, and they have also become more flammable. We discuss the importance of quantifying the flammability of different façade systems, but highlight that it is currently impossible to do so, which hinders research progress. We finish by putting forward an integral framework of design that uses multi-objective optimization to ensure that flammability is minimized while considering other objectives, such as maximizing thermal performance or minimizing weight.

• Composites Research
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• 제19권1호
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• pp.9-14
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• 2006

본 연구는 KS F 2278 2003 (창호의 단열성 시험 방법)에 의하여 철도차량 및 버스의 내/외장재로 적용 가능한 카본/에폭시 스킨-알루미늄 하니콤 & 발사코어 샌드위치 판넬(두께 : 37mm), 카본/에폭시 스킨-알루미늄 하니콤 코어 샌드위치 판넬(두께 : 57mm, 단열재 포함) 및 카본/에폭시 스킨-알루미늄 하니콤 코어 샌드위치 판넬(두께 : 37mm)에 대한 열관류율 시험을 하였다. 또한 KS F2277 . 2002 (건축용 구성재의 단열성 측정방법-교정열상자법 및 보호열상자법)에 의하여 추가로 알루미늄 스킨-알류미늄 하니콤 샌드위치 판넬들 (두께 : 27mm, 35n1m)과 알루미늄 스킨-포밍 알루미늄 샌드위치 판넬 (두께27mm)에 대한 열관류율 시험을 수행하였다. 본 연구를 통해 면제와 심재사이에 열전달은 실제 단면적이 넓을수록 열관류율이 높았으며, 하이브리드형 복합재 일수록 단열성능이 우수함을 확인하였다.

• 콘크리트학회논문집
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• 제27권3호
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• pp.245-252
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• 2015

최근 친환경 구조물의 관심 증가와 함께 비소성 시멘트는 국내외적으로 활발히 연구되고 있다. 비소성 시멘트의 경우 알카리 자극제의 종류에 따라 반응생성물 및 경화체의 특성이 다양하게 나타난다. 본 연구에서는 산업 부산물인 순환유동층 보일러 애시를 자극제로 사용하여 고로슬래그 미분말 기반 비소성 시멘트를 제조하여, 순환유동층 보일러 애시의 함량에 따른 경화 특성 및 수화물을 검토하였다. 또한 비소성 시멘트 경량화에 따른 단열특성을 고찰하였다. 그 결과 수화물인 C-S-H와 ettringite가 주로 형성되었으며, 50 MPa 이상의 비소성 시멘트 경화체의 제조가 가능하였다. 또한 경량화 시 압축강도는 10 MPa로, 이때에 열전도율은 $0.127W/m{\cdot}K$ 수준이었다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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• pp.565-570
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• 2001

Annually, Taiwan generates approximately 2 million tons of inorganic wastes in the form of sludge, fly ash and slug. To increase the added value of waste and maintain the increasingly insufficient supply of natural gravel, large public construction projects account for this large demand each year. future architectural trends are leading towards high-rise buildings. In light of the above, Center for Environmental, Safety and Health Technology Development, Industrial Technology Research Institute has developed the technology of manufacturing cold-bonding, sintering and bloating types of lightweight aggregates with a specific gravity ranging between 0.7~1.7, water absorption rate < 30%. The lightweight aggregate verified by physical property tests can be used as a substitute for the natural aggregate, which generally appears in replacing gravel in concrete, soundproofing and heat insulation materials. Doing so would not only moderate waste disposal problems, but also achieve the goal of resource recovery.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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• pp.24-26
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• 1995

The Development of A.C. Induction Motor for Railway Rolling Stock. The traction motor is designed as 4-pole induction motor with self ventilation. The winding insulation is throughout of materials of class C. The rotor is designed as a squrrel rotor with copper bar and casting. The rotor speed is detected by means of a pulse generator. The newer tection motor have no casting(frame). Punched-in holes make up the air duct and transfer the heat losses in complete. Maximim motor rpm is higher due to rotor construction. New is the entry of water-cooled traction motors in urban, However the water cooling design in - unfortunately - not applicable in traction motor.