• International Journal of Air-Conditioning and Refrigeration
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• 제16권1호
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• pp.15-21
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• 2008

Air-cooled split-type air conditioners (AC) are very popular in high-rise residential and commercial buildings in Korea. The performance of such AC systems varies significantly with system characteristics and environmental conditions. Particularly, the outdoor condensing unit of the system, if poorly cooled due to high density of AC distribution and restricted outdoor space, will result in large decrease of cooling efficiency and increase of electrical energy consumption and may further jeopardize the system reliability. This paper presents a numerical analysis on the thermal and energy performance of a group of air-cooled air conditioners installed at a courtyard of a high-rise building. The study introduces a series of new energy performance indices to assess the group performance of the AC condensers with different outdoor unit layouts. The results not only indicate the COP of the systems, but also quantify the system capacity and energy consumption. The evaluation method and indices developed are useful for guiding the design of the distribution plan of the AC units at building re-entrants.

• 자연과학논문집
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• 제16권1호
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• pp.55-75
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• 2005

This proposal is to present a campus landscape plan for PaiChai University. The site is located in 439-6 Doma-dong, Seo-gu, Taejon City and has an area of $208,499m^2$. The landscape plan covers the following: site inventory and analysis; integration of design program and site analysis; evaluation of design concept; schematic design including circulation form and spatial form; and design development including subarea design. In the design process, the author focused on the integration and interpretation of site conditions as related to the university buildings. He also collectively analyzed and considered the physical development of the outdoor spaces of Paichai University. The following are some of the major areas in the design of the outdoor spaces of Paichai University: 1) a main entrance space as a symbolic square, 2) Paichai central street, 3) a campus core as a greenish square, and 4) a 'Jajuro' plaza as Paichai 'Han' square. The outdoor spaces of Paichai university are created as a new type of campus realm with function, campus quality, original identity, symbolic meaning and images and beauty.

• 한국생활과학회지
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• 제19권5호
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• pp.775-794
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• 2010

This study is to provided a basic model to encourage environment and outdoor play programs. The study was based on the analyses of actual activities performed in two child care centers in Daejeon area and the way in which the programs for outdoor play were related to the environment of the centers. Data were collected through 'The Daily Report of the Outdoor Play Programs: Plan and Evaluation' paper conducted at each center performed from 2007 to 2009. Following Mockwha Choi et al., (2007), the play observed and described by teachers was analyzed to classify play areas and play activities within each area. The places, equipment and, playthings using in each play period were also examined as well as the limitation and inspiration caused by the environment. The results of the study are as follows: 1) Empty and unfilled space tended to generate more types of non-structural play and role-pretend play 2)Adventurous play was rarely observed. More thoughtfully designed physical environments need to be provided for children to experience challenge and adventure through physical activities 3) Outdoor play environment should be suitable for the overall developments of infants and toddlers depending on their activities. A child care specialist should support the design such environment 4) Naturally, the programs of outdoor play will not be identical for all child care centers. Rather, they should go along with the programmatic characters and environmental attributes of each center. Therefore the awareness of teachers and parents as to the importance of must realize of outdoor play should be further increased.

• 대한인간공학회지
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• 제17권3호
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• pp.41-59
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• 1998

Thermal comfort aspect of a locally-cooled target space in warm and humid environments(typically in the rainy summer season) was studied in view of PPD index. First. theoretical analyses were conducted to examine the effect of the governing parameters(such as air temperature, relative humidity and air velocity, etc.) using a computer model. Secondly, experimental investigations were also performed in a climatic room designed to simulate corresponding thermal conditions of outdoor environments. During the tests, temporal variation of PPD was recorded as functions of climatic variables(outdoor and indoor temperatures, relative humidity and air velocity) for the given human factors(metabolic heat generation and clothing). From both theoretical and experimental investigations, air temperature and air velocity were found to be the most dominant parameters affecting PPD of the target space. Results were summarized as: 1. Relative humidity of the locally-cooled target space tends to approach that of outdoor's as the space is subjected to an ON-OFF mode of cooling, since moisture potential of the two rooms reaches an equalized state as a result of moisture diffusion. 2. It was recognized that changes in relative humidity did not show any significance in view of thermal comfort as was reported in the previous studies, while variations of both temperature and air velocity caused relatively large changes in the degree of thermal comfort. 3. In-door environment should be evaluated in terms of PPD instead of relative humidity commonly recognized as an important climatic variable particularly in warm and humid environments.

• 교육시설 논문지
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• 제20권5호
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• pp.27-34
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• 2013

Public outdoor spatial environment and its convenient facilities are playing an important role in providing space for various student activities in university campus. Previous studies have shown that many socio-demographic-economic students' background and motivation have impacted the level of academic achievement. Moreover, research also contended that school facilities at some points also influenced students' academic performance. Thus, the aim of this research was to investigate the relationship between the level of academic achievement and satisfaction of various spatial environment through survey. For that purpose, one university campus was selected and evaluation indexes were categorized into five major components of physical and experimental environment, later supported by factor analysis. Correlation analysis found that extracted factors were significantly interrelated to academic achievement. Further, regression analysis also explored sense of belonging as major predictor of academic achievement. Finally the study suggested that campus plan be approached carefully, because such experimental environment as diverse club activities at outdoor environment is a key element to academic achievement even though rated low scores in satisfaction.

• 한국주거학회논문집
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• 제25권5호
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• pp.43-50
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• 2014

This study assesses thermal environment of detached housing area by classifying buildings types with codes based on spatial characteristics and forms of the detached housing area and applying heat island alleviation measures, especially focused on FBCs (Form-Based Codes). We analyzed shapes and materials of outdoor space with 3D-CAD, which can affect the surface temperature of the case studies, focusing on heat island alleviation measures, and performed space design by applying relevant climate factors to a simulation. As to the 3D surface temperature and HIP distribution, low-temperature distribution was shown in the case studies when we applied heat island alleviation measures. FBCs (Form- Based Codes) is being developed for the purpose of creating new urban environment. This study is significant because it pays attention to the effects of surface temperatures on accumulation of sensible heat and reviews heat island alleviation measures with outdoor space shapes/materials in order to lower surface temperatures, aiming at improved pleasantness of the detached housing area.

• KIEAE Journal
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• 제9권5호
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• pp.69-76
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• 2009

The purpose of this study is to provide basic data needed for planning and designing apartment community facilities in order to vitalize rental apartments. Outdoors community facilities of six rental apartments in Seoul were examined. The results are as follows. Firstly, the conditions of planning characteristics showed that the convenience is ranked as the highest priority of planning, compared to safety, friendliness and finally comfortableness. Community facilities are connected with the apartments and sidewalk providing convenient access for all apartment residents, there was little regard given to the features of comfortableness. Secondly, comfortableness of community facilities were shown to the lowest, compared to any characteristics. It is not easy to control noise and privacy in facility, and there are lack of near community facilities, for washing hands, drinking water and shielding from snow or rain, respectively. Thirdly, green facilities were shown to the highest applied friendliness more than other facilities. They were well outfitted with water space and gardening spaces, and robustly applied environment friendly materials and colors. Fourthly, resting facilities were shown to the lowest applied safety more than other facilities. Structure and material of facility are favorable but there is an absence of nonskid material and night-lightening system.

• 한국조경학회지
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• 제39권4호
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• pp.39-48
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• 2011

한국은 빠르게 고령화사회로 접어들고 있다. 이러한 시점에서 본 연구의 목적은 예비고령자들의 현 주거지의 외부환경 이용실태를 조사하고, 고령자 친화형 외부공간에 주요한 요소들을 파악하여 이들의 평가를 통해 고령자의 건강한 생활을 위한 환경요소를 파악하여 개선점을 제시하는데 있다. 연구 방법으로서 먼저 기존 선례와 관련연구의 조사를 통한 이론적 토대를 마련하고, 실증연구로서 대전에 거주하고 있는 준고령자 이상 주민의 외부환경 이용실태와 만족도에 대해 설문조사를 병행하였다. 본 연구의 결과로서 전반적으로 현 거주지의 외부환경이 큰 문제가 없이 중간 수준의 평가를 받고 있었지만, 평가요소들중 비교적 저평가된 요소들은 고령자 친화형 공간요소로 개선이 필요되어져야 할 것이다. 첫째, 산책하기 위해서 '산책길의 이용'이 가장 높았고, 한번에 1~2시간동안 외부에 머무르며, 주차된 차량이 많음이 가장 불편한 사항이었다. 둘째, 외부환경은 '보통'으로 평가되었으며, '사회성'이 기장 낮게 평가되었다. 셋째, '카트/휠체어 이용편리성', '조명에 의한 야간 식별성', '야간의 안내판 식별성'. '나무 화초 쾌적성'의 4 개 항목에서 남자가 여자보다 불만족하고 있었다. 66세 이상의 응답자들이 '바닥의 미끄러움', '계단난간', '야간의 안내판 식별성', '단지배치의 방향성' 항목에서 더 불만족하고 있었으며, '바닥 미끄러움', '야간의 안내판 식별성'의 두 개 항목에서는 80대 이상의 응답자들이 더 불만족하고 있었다. 넷째, 현 거주지 유형에 따른 평가는 22개 중 20개 항목에서 유의미한 차이가 나타나는 바, 아파트 거주자의 평가가 더 높게 나왔다. 전반적으로 현거주지 주변환경에 있어 고령자들의 입장에서 크게 문제로 대두된 것은 없다고 평가되었다. 그러나 향후 10년 내에 고령화가 더욱 진행된다고 가정할 때, 기술통계에서 낮은 점수를 받은 항목과 80세 이상의 고령자들에게 특히 불편을 야기하고 있는 낮은 평가항목에 대하여 주거환경 개선이 우선적으로 요구된다.

• 조명전기설비학회논문지
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• 제24권6호
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• pp.18-26
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• 2010

도시공간의 안정과 쾌적함을 위하여 옥외조명은 우리 사회에서 필수적인 부분이 되었다. 그러나 옥외조명을 잘못 설치할 경우 조명에너지의 낭비뿐만 아니라 건축물 야간경관 훼손을 야기시킨다. 최근 야간 경관조명의 중요성이 부각되면서 지자체마다 야간경관 이미지 구축에 집중을 하고 있다. 그 중 해안가 주변의 옥외조명은 지역 내에 특화된 관광 상권을 구성하며 생동감 있는 도시 이미지를 부여하고 도시경쟁력을 강화 시킬 수 있다. 본 연구는 우리나라의 대표적 항구 도시인 부산의 해안가의 야간경관조명의 빛공해를 평가하는데 그 목적이 있다. 디지털 광학 계측기인 Radiant Imaging ProMetric-1400으로 광안리 해수욕장, 마린시티, 그리고 해운대 해수욕장 주변의 옥외조명을 측정하였다. 모든 옥외조명의 휘도는 국제조명위원회 권고기준과 비교했을 때 약 2~20배 정도 높게 나타났다. 주상복합 상부조명 및 해안에 면한 상가 저층부는 색채 및 휘도의 제한이 필요한 것으로 사료된다.

• 한국조경학회지
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• 제31권4호
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• pp.39-48
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• 2003

The Office of Korean National Railroads announced a design competition for Kwangyang Station and sought design proposals in October of 2002. The authors collaborated on a landscape design for Kwangyang Station and earned first prize in the competition. The Office decided to construct outdoor public spaces of Kwangyang Station for railroad users, visitors and staff, and local residents. The landscape design covers the following: site inventory and analysis; integration of design program and site analysis; evaluation of design concept; selecting a winning design alternative; schematic design including circulation form and spatial form; and design development including subarea design. In the design process, the authors focused on the integration and interpretation of site conditions as related to the Kwangyang Station building. They also collectively analyzed and considered the physical development of the outdoor spaces of Kwangyang Station. The following are some of the major areas in the design of the outdoor spaces of Kwangyang Station: 1) a plaza for waiting, 2) an entry area for passengers, 3) a train cafeteria, 4) a cultural plaza, 5) an image wall, and 6) a symbolic pond. The plaza for waiting is created as a place for users to wait and rest. The entry area for passengers provides an area for pedestrians approaching, passing and strolling. The train cafeteria features trains, lawns, grasses and trees. The cultural plaza is a main area representing the regional characteristics of Kwangyang. This plaza also provides an area for various public events. The image wall is meant to be an exhibition space for displaying the advancements of Korean National Railroads in sculptural image forms. The symbolic pond consists of an area with symbolic water features and several sculptures with artistic value. In the authors' design, the outdoor spaces of Kwangyang station are created as a new type of public realm with function, regional quality, original identity, cultural context, symbolic meaning and images, and beauty. The designed spaces would be one of the most representative places of interest and attraction in Kwangyang.