• Title/Summary/Keyword: ECOLOGICAL EVALUATION

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The development and application of environmental impact assessment program for apartment building element based on building materials LCI DB (건축재료 LCI DB 기반의 공동주택 부위별 환경영향 평가 프로그램 개발 및 적용에 관한 연구)

  • Kim, Rak Hyun;Tae, Sung Ho;Kim, Ji Hoon;Lee, Jong Gun
    • KIEAE Journal
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    • v.16 no.6
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    • pp.151-157
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    • 2016
  • Purpose: The purpose of this study is to develop and apply an environmental impact assessment program for apartment building elements, based on the building materials of the LCI DB, which can link the LCA results of building materials and buildings. Method: For this purpose, a framework for building elements was established, and several building material combinations were developed. In addition, the LCA method for quantifying environmental load emissions from the building materials of each site was applied to establish an environmental impact database of the building materials of the LCI DB. Result: An environmental impact assessment program, based on a Microsoft Excel worksheet, was developed for apartment building elements. This program can link the environmental impact assessment of building materials and building units. To validate the program evaluation results that were obtained in this study, a comparative analysis was carried out using the results of existing evaluation methods. The error rate was estimated to be 5% for environmental impact assessment using existing evaluation methods.

Effects of Security Lighting Lamps on Discomfort Glare to Indoor Occupants

  • Lee, Yoon Jeong;Kim, Jeong Tai
    • KIEAE Journal
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    • v.15 no.4
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    • pp.21-28
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    • 2015
  • Purpose: Although security lights are used to secure pedestrian visibility and safety at nighttime, they can generate light trespass in the neighboring residential space. To prevent this, standards for acceptance limits on vertical illuminance and light pollution by the windows of residential buildings are presented. Method: This study thus representatively selected three types of lamps and, through an evaluation and analysis of the physical and subjective discomfort glare per lamp, proposed a discomfort glare index for each lamp. The evaluation and analysis according to the lamps were conducted through experiments. The variables were the security lights' lamps (NH 100W, MH 70W, LED 50W), installation angles (0, 20), and installation distances (3m, 5m, 7m, 9m). Result: According to the results of the discomfort glare evaluation depending on the angles and distances of the security lights, the following minimum standards are proposed: for NH 100W, a discomfort glare index of 30 and an installation distance of 4m; for MH 70W, a discomfort glare index of 32 and an installation distance of 4m; and, for LED 50W, a discomfort glare index of 31 and an installation distance of 6m, respectively. In addition, this paper recommends the use of MH 70W, when the road width is 4m-6m, and LED 50W, when the road width is over 6m, respectively.

A Study on Classification of Effect Measurements of Community Garden (공동체 텃밭의 효과 측정을 위한 항목 유형화 연구)

  • Kim, Jae Yeon;Kim, Yun Soo;Lee, Yuen Sook
    • KIEAE Journal
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    • v.13 no.5
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    • pp.23-30
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    • 2013
  • Due to rapid urbanization and industrialization in Korea urban environmental problems such as changes in climate and shortage in green spaces and social problems such as lacks of interactions with neighbors have occurred and community garden appeared as one means to solve such problems. The purpose of this study is to comprehensively identify the evaluation items to measure the effect of community gardens. This study comprehensively researched the evaluation items through literature studies of domestic and overseas documents and verified their contents through case studies of domestic site. As a result of this study, a total of 39 measurement items for evaluation was identified and these items were divided into five large categories of "eco-environmental effect," "production and economic effect," "physical effect," "psychological effect," and "social effect" and these categories could be subdivided into 12 types. This study can be used as references for positively introducing the community gardens in Korea and has a meaning that it can be developed as an analyzing tool for measuring the concrete effects of community gardens when they are introduced in Korea in large numbers hereafter.

A Study on the Sustainable Development of Pusan Metropolitan City by the EMERGY Evaluation (EMERGY 평가에 의한 부산광역시의 지속적인 발전가능성 평가)

  • Son, Ji-Ho;Lee, Suk-Mo
    • Journal of Environmental Science International
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    • v.9 no.3
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    • pp.185-191
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    • 2000
  • Sustainable development has been the key concept, both in economic policies and in environmental management since 1970s. In the view of systems ecology, sustainable resource use strategies are considered to be essential in achieving sustainable development. During the last three decades, the discipline of systems ecology has applied ecological energetic analysis to the evaluation of the contribution of natural environments to economic systems. ENERGY analysis of main energy flows driving the economy of humans and life support systems of a city was made including environmental energies, fuel, and inputs, all expressed as solar emjoules. Total EMERGY use of Pusan was 3.89 E22 sej/yr, about 90 percent of it was purchased sources from outside during eleven years from 1985 to 1995. EMERGY flows from the environment were less than 10 percent. EMERGY yield ratio and environmental loading ratio were 1.10 and 10.45, respectively. EMERGY sustainability index is there(ore less than one, which is indicative of highly developed consumer oriented economies. Development of a city has been achieved in the short run by the economic growth, but it can be sustained in the long run by the use of renewable resource systems.

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The Evaluation of Present Condition and Visitors Satisfaction of Rooftop Greening (옥상녹화 조성지역의 현황평가 및 이용객 만족도 연구)

  • Lee, Dong-Kun;Yoon, So-Won;Oh, Seung-Hwan;Jang, Seong-Wan
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.8 no.6
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    • pp.45-58
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    • 2005
  • The objective of this study is to the integrated evaluation of the present condition and satisfaction of visitors of rooftop greening area using quantitative and qualitative method. The thirteen green roofs were selected to investigate environmental variables as like building structure, soil, water, atmosphere and climate environment and questionnaire survey for investigate the satisfaction of visitors was conducted. The results of this study are as follows : remove of the hazardous inflow of species, install rain water recycling facility, install outdoor unit of air condition where not to affect plants in green roof, install safety facilities in the case of making resting place, plant variable vegetation and so on. The result of questionnaire survey are that visitors want to make more comfortable resting space. The more bigger the resting space and privacy, the more satisfaction of visitor became high. In conclusion, green roofs implementation should be considered reduction of temperature and delay of runoff, insulation effect and ecological restoration as well as rooftop greening is focused on the development of resting space nowadays.

Energy Consumption Characteristics and Evaluation of Thermal Insulation Performance in Accordance with Built Year of Apartment Complex (공동주택의 준공연도에 따른 단열성능 평가 및 에너지소비 특성에 관한 연구)

  • Choi, Doo Sung;Lee, Myung Eun;Chun, Hung Chan
    • KIEAE Journal
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    • v.14 no.3
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    • pp.79-86
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    • 2014
  • Studies have shown that the thermal performance of buildings changes depending on the year of construction completion. It leads to increased energy consumption of buildings and significant financial burden on users. Thus, this study has calculated the thermal insulation performance of 86 apartments quantitatively, using temperature difference ratio and sensible heat flux. Also, energy consumption characteristics depending on the year of construction completion and thermal insulation performance were analyzed by comparatively analyzing the results of insulation performance evaluation and heating costs. The analysis results are as follows. As for thermal insulation performance, it was around 70% lower in the apartments completed before 1985, compared to apartments completed after 2010. As for heating costs, the apartments with the highest heating cost incurred 1.5 higher heating cost than the apartment with the lowest heating cost. In terms of the insulation performance evaluation, the difference was 2.5-fold.

A Finish Material Management Process for Indoor Air Quality -Focused on Apartment Buildings- (실내 공기질을 고려한 마감자재 선정 프로세스 연구 -공동주택을 중심으로-)

  • Kwon, Gi-Deoc;Lee, Dong-Hoon;Lee, Sung-Ho;Zheng, Qi;Kim, Sun-Kuk
    • KIEAE Journal
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    • v.10 no.6
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    • pp.123-130
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    • 2010
  • Indoor air quality has attracted great attention in recent years and thus the importance of managing finishing materials in terms of pollutant source control is being emphasized. Managing the finishing material at the design stage maximizes the efficiency of IAQ control at the following construction stage. However, there are insufficient investigations on the application of a specific finishing material management process, a database management system or a finishing material management process network. As a result, the main purposes of this study comprise comprehensive evaluation of IAQ performance from the selected finishing materials and auxiliary materials, application of the material management system basing on the types and characteristics of toxic substances generated from the indoor finishing materials, investigation of IAQ evaluation standard, and the overall IAQ evaluation method for the design parts. The result of this study will be the basic data to construct DBMS for management of finishing materials with respect to IAQ.

The Elderly's Perspectives on Apartments as a Healthy Home Environments (공동주택 거주 고령자의 건강주거 인식특성 및 요구에 관한 연구)

  • Cho, Sung Heui;Kang, Na-Na;Jun, Eun-Jung
    • KIEAE Journal
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    • v.10 no.6
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    • pp.81-89
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    • 2010
  • This study focuses on a concrete understanding of the characteristics of perceptions and needs about healthy housing of the elderly, who represent the most vulnerable group of people in society, on the four evaluation dimensions of healthy housing as part of the research for evaluation indicators development for housing health performance in apartments. First, it was found that the elderly perceive an environment where their physical health is well supported as the most important factor for healthy housing. Additionally, the management support of the housing was perceived as the second most important consideration. Second, the most frequently used area for the elderly is the living room and a desired place to be added to indoor spaces was a room of their own or a 'living room', which clearly indicates the importance of the indoor environment for the elderly. Third, the biggest factor for the interior environment that affected the satisfaction level of the elderly in their housing was largely based on the convenience factor that helped lesson the discomfort in their daily life due to the physical aging process, and also on factors related to the pleasant indoor surroundings. Based on the concepts discovered in this study on healthy housing, more concrete items should be developed in the future for an extensive indicator for health performance evaluation, and actual research on the general public should follow suit.

Evaluation Methodology of Solar Rights Using Autodesk VIZ for Apartment Buildings (Autodesk VIZ를 이용한 공동주택의 일조권평가방법에 관한 연구)

  • Moon, Ki Hoon;Kim, Jeong Tai
    • KIEAE Journal
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    • v.6 no.3
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    • pp.35-42
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    • 2006
  • The apartment buildings now covers more than 50% of the total residential types in Korea and the urban residential area becomes increasingly congested with newly constructed high-rise apartment buildings. Judicial precedents require, for securing the solar rights in the residential area, that the consecutive sunshine duration should be at least two hours from 9:00 to 15:00 or the accumulative sunshine duration should be at least four hours from 8:00 to 16:00 as of the winter solstice. Disputes are increasing, however, on infringed solar rights and view rights for the neighboring structures as cases occur where the requirement cannot be satisfied in congested residential areas. The sunshine duration scan be assessed by measuring it on the site of the dispute, but it is impracticable to actually measure it for every case on the winter solstice, only one day out of the whole year. At a trial, therefore, 3D computer simulation is used to calculate the sunshine duration and determine the extent of infringement for submission of the evaluation to be used as the basis of the judgment. The simulation, however, may have an error in its result up to the program characteristics and the accuracy of the input data such as the structure shape and height, the distance between structures, and the ground level. This study, therefore, used a self-developed VIEW program with Autodesk VIZ 2006 to provide a simulation method for solar access evaluation, and verified its efficacy by comparing the results with the actual measurements.

Evaluation and Application of Prediction Models for the Daylight Performance of a Light-Pipe System (광파이프 시스템의 채광성능 예측모델의 검증 및 적용)

  • Yun, Geun Young;Shin, Ju Young;Kim, Jeong Tai
    • KIEAE Journal
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    • v.10 no.1
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    • pp.65-72
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    • 2010
  • The use of natural light has the potential for improving both the energy efficiency and indoor environmental quality in buildings. A light-pipe system can introduce daylight to spaces that would otherwise not be able to benefit from the advantages of daylight penetration. For the light-pipe system to be widely used in Korea, it is important to quantify its daylighting performance with due consideration regarding the effects imposed by the local climate conditions. This paper presents the evaluation results of existing semi-empirical models to predict daylighting performance of a light-pipe system. The evaluation of the existing models was based on the monitoring data obtained from a underground parking lot in which the light-pipe system was installed. Comparisons were made between the predicted and the monitored data obtained from the study. The results indicated that semi-empirical models which was developed using the experimental data obtained under the Korean climatic conditions had a good prediction performance. We also quantified the effects caused by sky conditions, solar altitudes, room dimensions, and the aspect ratio of a light-pipe system on both the daylighting performance of the light-pipe system and the indoor illuminance distributions of the space using the semi-empirical model. Finally, this paper provides the design guideline of the light-pipe system for its application to an underground parking lot space.