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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal Basic Information
Journal DOI :
Korea Institute of Ecological Architecture and Environment
Editor in Chief :
Volume & Issues
Volume 16, Issue 4 - Aug 2016
Volume 16, Issue 3 - Jun 2016
Volume 16, Issue 2 - Apr 2016
Volume 16, Issue 1 - Feb 2016
Selecting the target year
An Analysis on Building Shading Plan for a City Hall considering Energy Saving
Kim, Jin Lee ; No, Sang Tae ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 5~10
DOI : 10.12813/kieae.2016.16.2.005
Purpose: Recently, many public office buildings which were built by curtain wall increased rapidly, but the results of the investigation of the government, these buildings have been found that the heating and cooling thermal load is high, and showed low energy efficiency. Method: To evaluate the effects by applying outdoor louver and indoor blind, which can control solar radiation in order to reduce the heating and cooling load of public office building which was built by glass curtain wall. The heating and cooling load was calculated via Energyplus, building and outdoor louver, indoor blind were modeled by Google sketchup connected to Energyplus. Result: The results of this study were as follows; the case of applying various outdoor louver, the heating and cooling load all decreased as compared to the case without applying outdoor louver, the case of applying indoor blind, the heating and cooling load decreased as compared to the case without applying indoor blind, but indoor blind showed low energy performance comparing outdoor louver.
The Evaluation of Energy Efficiency of Apartment Units after Conversion of Balconies into an Integrated Part of Interior Living Space by Computing with ECO2 Software
Kim, Chang-Sung ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 11~16
DOI : 10.12813/kieae.2016.16.2.011
Purpose: International efforts to save Earth's environment against global warming and environmental pollution have been made in many countries. Energy consumption of buildings has been continuously increasing, and it has been over 40% of total energy consumption in the world. Energy consumption of buildings in Korea reaches 24% of total energy consumption. So, Korea government has executed building energy rating systems to control energy consumption of buildings. Method: This study was carried out to evaluate the energy performance of apartment unit plans according to converting balconies into living areas. For the study, six types of input models were made. Two input models(SP1 and SP 2) were the standard units that balcony areas were not converted into living areas, and four ones(EP 1, EP 2, EP 3 and EP 4) were the extended unit plans that balcony areas were turned into living areas. All of them were simulated with ECO2 software to assess building energy efficiency. Result: According to the results, the energy performance of the EP 2 and EP 4 models were 21. 8% higher than SP 1 model and 9.2% higher than SP 2 model.
Comparison of Sensitivity Analysis Methods for Building Energy Simulations in Early Design Phases: Once-at-a-time (OAT) vs. Variance-based Methods
Kim, Sean Hay ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 17~22
DOI : 10.12813/kieae.2016.16.2.017
Purpose: Sensitivity analysis offers a good guideline for designing energy conscious buildings, which is fitted to a specific building configuration. Sensitivity analysis is, however, still too expensive to be a part of regular design process. The One-at-a-time (OAT) is the most common and simplest sensitivity analysis method. This study aims to propose a reasonable ground that the OAT can be an alternative method for the variance-based method in some early design scenarios, while the variance-based method is known adequate for dealing with nonlinear response and the effect of interactions between input variables, which are most cases in building energy simulations. Method: A test model representing the early design phase is built in the DOE2 energy simulations. Then sensitivity ranks between the OAT and the Variance-based methods are compared at three U.S. sites. Result: Parameters in the upper rank by the OAT do not much differ from those by the Main effect index. Considering design practices that designers would chose the most energy saving design option first, this rank similarity between two methods seems to be acceptable in the early design phase.
Study of Design Strategy to Reduce Energy Consumption in a Standard Office Building
Yang, Ja-Kang ; Kim, Chul-Ho ; Kim, Kang-Soo ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 23~31
DOI : 10.12813/kieae.2016.16.2.023
Purpose: Recently energy consumption is rapidly increasing due to continuous development of social evolution in various field. In this situation, there is a lot of effort to reduce this energy consumption in many ways, especially in building energy. Preceding studies already started to analyze the housing area such as zero energy house and passive house by researching annual building energy consumption, but to apply the results of housing to office building is insufficient since it has different consumption tendency. Method: In this study, eQuest program was used for simulation and the base model is selected among standard office building in ASHRAE 90.1. Variables are divided into passive and active factors for comparison. Result: In passive factors, glazing system showed the highest energy saving rate by 21.3% with triple low-e glass and enhancing wall u-value showed the lowest energy saving rate by 3.6% with 0.15 m2/K. In active factors, VAV system showed 30.9% energy saving rate when compared to CAV system, and heat exchanger showed 10.2% energy saving rate. For regeneration energy part, photovoltaic panel generated 10.4% of base annual energy usage.
A Study on the Window Energy Rating Systems in Residential Buildings
Kim, Dong-Yun ; Lim, Hee-Won ; Shin, U-Cheul ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 33~41
DOI : 10.12813/kieae.2016.16.2.033
Purpose: The window energy rating system was developed in early 1990's and various kind of rating system has been implemented in advanced country such as Europe, Australia, Canada and the US since 2000. In Korea, the Energy Consumption Efficiency Rating Indication System has been implemented to promote supply of high efficiency window since July 2012. Normally, the window energy rating system based on heat balance which considers both thermal losses and solar heat gain is used and applied only to residential buildings. However, the system used nationally only considers thermal losses and is applied to every building regardless of its usage. Therefore, in this study, we indicated problems of domestic window energy rating system and looked for improvements. Method: We analyzed thermal performance of various windows through dynamic simulation applied to detached house and compared results with those of domestic and foreign rating system. Result : Thermal performance of south windows is more affected by SHGC than U-value, and that of north windows is also affected by SHGC a lot. The difference between the results of our study and current system is statistically significant. As a result, appropriate evaluation criteria which considers solar heat gain is required.
Field Visit Study of Newly Constructed Supportive Housing 'The Brook' in Decayed Area of New York, USA
Lee, Yeunsook ; Park, Jaehyun ; Qi, Ting ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 43~52
DOI : 10.12813/kieae.2016.16.2.043
In the 21st century, Korea had radical economic development with accelerating urban sprawl, and following declination with social polarization. City declination makes socially vulnerable people unstable and increase homelessness. The projects revitalizing decayed area utilize local idle spaces to build new facility with creative supportive programs. The purpose of this study is to analyze inclusive characteristics of a supportive housing 'The Brook'. A field visit walk through observation and in-depth interview were utilized as research methods. The information of a representative supportive housing field will promote understanding the concept, and create base for further research. As results, state and knowhow of information concerning housing first policy, active government investment, space planning, management, social integration, service providing, architecture and so on offered to facilitate inclusive insights. In conclusion, the characteristics of supportive housing were realistically analyzed through a field research. This research is significant to introduce initially the effective supportive housing which has been practiced for 30 years in USA to that needs alternatives for the socially vulnerable in Korea.
Preferred Features of Communal Shared Housing of the Urban Young Adults and Adults Housing Poor - Focused on Single Household Living in the Deprived Area of Seoul-
Ko, Ji-Yeong ; Lee, Yeun-Sook ; An, So-Mi ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 53~66
DOI : 10.12813/kieae.2016.16.2.053
Purpose: This study aimed to find out the characteristics of the communal shared housing preferred by the housing vulnerable single-person household young adults and adults. It also intended to identify overall characteristics of the young adults and adults and compare and analyze the differences. Method: The the questionnaire using face-to-face interview was conducted. The research subjects were 100 housing vulnerable single-person household young adults and adults, who were living in Gosiwon, Jjokbang, detached houses below the minimum housing standards, multiplex housing units and multi-household houses in Seoul. The research was conducted on the general characteristics, housing environmental characteristics, preferred characteristics of space planning and non-physical elements on the communal shared housing, and the collected data was analyzed using the SPSS statistical package. Result: Out of 15 categories on the communal shared housing, there were common preferences to 6 categories and differences in 7 categories between young adults and adults. At a time with the need for customized housing welfare by life cycle, these research findings are expected to provide basic data to realize customized housing welfare for the housing vulnerable and develop appropriate housing alternatives.
Case Analysis of Japanese Excellent Rural Housing for Improvement of Settlement Environment in Agricultural Region
Baek, Seung-Kwan ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 67~77
DOI : 10.12813/kieae.2016.16.2.067
Purpose: The purpose of this study is to suggest a implication and improvement which can provide direction when proposing prospective housing policies which comply the peculiar and changing needs of rural communities. Method: Accordingly this study reviewed for rural housing regulations and policies that appear in the process of developing Japanese Excellent Rural Housing. According to the case study, municipal organizations have implemented independent housing programs base on the Promotion of Rural Residence Act for returning farmers. Result: They provide service to provide returning farmers comprehensive counseling and information about employment, child-rearing and education, housing, and etc. The service program is run by a cooperative way. In addition the Japanese Excellent Rural Housing projects nowadays focus on promoting voluntary establishments of local communities by providing comprehensive plans for local community formation and interaction for harmony between existing residents and returning farmers. In the case of Korea, targeting existing residents and returning farmers for settlement environment in rural areas need jobs, child care, education, and comprehensive housing counseling. In addition, this suggests the need for linkages between the various community programs and residents.
A comparative analysis of the total window thermal transmittance simulation result according to the evaluation method of effective conductivity(λ
) of frame cavity - Focused on unventilated frame cavity simulation results of single window -
Lee, Yong-jun ; Oh, Eun-joo ; Kim, Sa-kyum ; Choi, Gyeong-seok ; Kang, Jae-sik ;
KIEAE Journal, volume 16, issue 2, 2016, Pages 79~85
DOI : 10.12813/kieae.2016.16.2.079
Purpose: It is difficult to calculate frame U-value because of the two reason. First is selection of air properties in cavity. Second is calculation method in window frame. For this reason, it is important to decide cavity properties in window frame. However, international standards offered different method(ISO 15099, ISO 10077) and air properties was changed according to the two methods. The aim of this study was to suggest method for deriving accurate frame U-value using international standard methods and CFD simulation. Method: First, this study conducted analysis calculation method of ISO 15099 and ISO 10077. And, CFD simulation conducted based on same condition. Finally, ISO calculation and CFD simulation results were verified through comparison with real experiment results. Result: The results show that effective conductivity of ISO 15099 was the highest value. ISO 10077 and CFD result followed. The convergent values of ISO 10077 was the highest. ISO 15099 and CFD followed. ISO calculation reflecting CFD simulation results will reduce error with experimental results.