Jong-Yeob Kim

A Study on Establishment of the Basic Plan to Construct an Integrated Management System of National Building Energy

Energy consumption of building is given a sizable portion in total national energy conservation and if current trends continues, energy conservation level will rise as level of developed country. For this reason, a basic plan is proposed for integrated management system to manage energy conservation of buildings using a link with energy information and building information. Specifically, the questionnaire investigation conducted by building energy expert is performed to determine the projects along with time schedule and demands level of management system. In addition, to investigate study on energy usage information and management situation the management architecture of energy supplier is also studied.

Condensation Reduction Study of an Apartment Underground Elevator Hall with respect to Dehumidifier Locations

1 서울과학기술대학교 에너지환경대학원, 서울과학기술대학교 건축학부, 한국토지주택공사 토지주택연구원 Graduate School of Energy and Environment, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea School of Architecture, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea Environment Energy Research Group, Land and Housing Institute, Daejeon 305-731, Republic of Korea (Received January 31, 2014; revision received February 28, 2014; Accepted: March 2, 2014)

Research on Improvements of Green Building Rating System Based on Field Survey and Resident Satisfaction Survey of Green-certified Apartment Complexes - Focused on the Land Use and Transportation, Energy, Material and Resources, Ecological Environment -

The purpose of this study is to explore the validity of green building certification and regulations and to improve the design guidelines and green building rating system based on green-certified score, field survey, resident satisfaction survey of green-certified apartment complex. The 6 green-certified apartment complexes in metropolitan area were selected for this study. The findings are as follows ; 1)It found that eco-friendly environment factor has higher correlation with green-certified score and resident satisfaction than the other factors, such as land use and transportation, energy, indoor environment. 2)Defects of unit and outdoor space after occupancy have impacts on the satisfaction for eco-friendly environment factors due to a link between residential satisfaction and satisfaction for eco-friendly environment factors. Thererfore, post management system with relation to green-certified score is required for manage the green-certified apartment complexes consistently. 3)Authors also suggested improvements on community center and facility, pedestrian road in apartment complexes, bicycle parking lot and bicycle road, separating the household recyclables from the garbage, offering the users manual, and aquatic biotope and land biotope.

A Development and Evaluation of an Web-based Apartment Buildings Energy Information System

The energy use of building operational stage is about 25% of total energy supply in Korea. The intensification of insulation at the design stage and the efficient instruments were used to reduce energy use of the buildings. These efforts are limited at the energy saving side, the residents voluntarily participation in the energy-conservation is more effective. To achieve this purpose, energy use information program (of the individual users) has been developed to lead the energy users actively participating in the energy-conservation program to share at the web. Also, by investigating the necessity and the will of usage of the program and applying a pilot program, the collectability of valid data and the usability have been evaluated.

A Study on Measurement of the Indoor Air Quality in Modular Mock-up Housing

Recently, It has been much interest in modular housing construction. so, The purpose of this study was to investigate the characteristics of the indoor air quality in modular mock-up housing. We measured indoor air quality(formaldehyde, benzene, toluene, ethylbenzene, xylene, styrene) of two modular mock-up units that built-in furniture is installed and uninstalled. As a result, the pollutants of built-in furniture installed unit were emitted more than built-in furniture uninstalled unit. But after bake-out and ventilation, emission concentrations of two modular mock-up units were similar and were below Indoor Air Quality recommendation standards. Built-in furniture is likely to affect the emission concentration of toluene

An Economic Analysis of Steel Framed Modular Housing: Compared with Case of Urban Type Living Housing of Wall-slab

The technology-intensive unit modular method of factory production method is attracting attention by the limit of the labor-intensive and field centered wet construction method. In recent years, the unit modular method has been applied to the construction of schoolhouse and BOQ(bachelor offices` quarters), dormitories, etc. But the modular method still is not used in housing construction by the lack of verification of resident performance and construction cost. Therefore, this study analyzed the economics of modular house to vitalize the constructed residential building by modular method and to develop the modular method. According to the study results, the construction cost of the modular house was analysed more about 6.2% expensive than that of the existing housing. However, if the construction duration of modular house is shortened or the productivity of modular house is increased, the construction cost of modular house will be similar to the that of the existing house.

The Analysis on Energy Performance Index of the Green Building Certified Apartment Buildings in Korea

ABSTRACT Although many certification works have been carried out since Green Building Certification was enforced in 2002, analyses of the effects and efforts to improve this system are still poor. In the certification system, the energy performance was usually assessed by Energy Performance Index(EPI) of the Energy Saving Design Standards for Buildings. However, due to the inadequacy of analyses on current situation of the Index, there are difficulties to reform it. In this research of green-certified apartments, the author examined correlations between energy performance indexes and aimed to improve the Index by analyzing the scores based on point distribution of respective fields. The average EPI score of green-certified apartments was 74.68, and there was wide variations in min 63.4 and max 90. Furthermore, the average score of energy consumption, which was allotted the most points, was 7.04 out of 12. Therefore, betterments in the Index such as reinforcement in grade ranges and adjustment of the calculation method are necessary.Key words: Green Building Certification, Apartment Buildings, Energy Conservation, Energy Performance Index(EPI)

A Study on the Application of Integrated Management System for Building Energy Efficiency

Energy consumption of building is given a sizable portion in total national energy conservation. From this reason, the integrated management system of national building energy was proposed to manage energy usage and of which feasibility study was demonstrated in Seoul at 2010. Expansion of the application availability for the aforementioned system, energy policies etc. have focused on the building sectors and future uses and developments are investigated. Specially, energy consumption and building documentary DB are useful to validate energy usage for each building and define to remodelling effect before and after. Furthermore, in this study, a number of developments and applications of the system and future uses of energy usage data can be identified.

A Design Criteria of Ventilation Holes to Reduce a Vapor Condensation on the Balcony Walls in Apartment Housings

LH has installed sashes to the balcony to save energy and increase residential space. Then, it is very difficult to protect a condensation of vapor on the walls in the winter time, because the space is closed and the wall surface temperature becomes very low in a balcony. We have tried to get the optimal thermal design methods to reduce the condensation on the walls. The one of the chosen method is to make holes on the walls, and then the condensation shall be reduce because the dew point temperature will be lower due to the effect of dehumidify. In this case, it is just necessary to find as like that how many holes should be perforated through the wall, whats their size, and where is their positions. In this study, a computational fluid dynamics was applied to analyze the temperature, the pressure and the velocity distribution for an incompressible flow in the balcony spaces. And field tests were also carried out to get the data to compare to the simulation results. Finally the design criteria of the ventilation holes in the balconies was suggested by analysis of the computer simulation models.