• Research Article

    Prediction of Wall Insulation Performance by Design Parameters of Low Emissivity Thin-film Composite Insulation

    저방사 박막 복합 단열재 설계인자에 따른 벽체 단열성능 예측에 관한 연구

    Seo, Jun-Sik, Hong, Seung-Hun, No, Sang-Tae

    서준식, 홍승훈, 노상태

    This increase in input per unit area due to the strengthening of energy design standards appears to accelerate the growth of insulation ... + READ MORE
    This increase in input per unit area due to the strengthening of energy design standards appears to accelerate the growth of insulation market. Therefore, in Korea, the construction of low radiation thin film composite insulation has been increasing in order to improve the thermal resistance of the air cavity and to reduce the thickness of the insulation. As building energy-saving designs become more popular in Korea (notification of Ministry of Land, Infrastructure and Transport), test reports of insulation tests on windows and walls must be approved for new construction. However, it is difficult to measure the thermal insulation performance of low-emissivity insulation only, and the insulation performance of low-emissivity insulation only is not satisfied because it does not satisfy the indices required for thermal insulation performance such as the energy performance index of the energy saving plan. Therefore, in order to derive reference data of low emissivity insulation, this study analyzed and measured the change of insulation performance according to the design factor of low emissivity insulation wall through numerical analysis and model test. - COLLAPSE
    October 2018
  • Research Article

    A Study on Modeling Analysis of Ground Source Heat Pump Based on Actual Data

    실측 데이터 기반의 지열히트펌프 모델링 분석에 관한 연구

    Ryu, Sung-Woo, Jeon, Jong-Ug, Kim, Kang-Soo

    류성우, 전종욱, 김강수

    Recently, the most widely used geothermal application field is heating and cooling, and ground source heat pumps are recognized as a good ... + READ MORE
    Recently, the most widely used geothermal application field is heating and cooling, and ground source heat pumps are recognized as a good alternative to the heating and cooling of buildings. The purpose of this study is to investigate the reason of the error and the method to reduce the difference by comparing and analyzing the data obtained from the simulation data of the target building where the ground source heat pump is applied. This study focused on reducing the error rate through EWT correction which has the greatest effect on the ground source heat pump. EWT is the temperature of the inlet tube at which the heat transfer medium enters the heat exchanger of the heat pump, and is affected by the geothermal environment. Correction of the input value through EMS reduced the length of the borehole which affects most of the underground heat exchanger by about 9%. The flow rate is corrected by an average of 3%, and the hole spacing is corrected by about 2.8%, and finally the thermal conductivity is corrected by about 2%. - COLLAPSE
    October 2018
  • Short Communication

    Analyzing Technical Elements of Zero Energy Building through the Case Study of the Main Certification in Korea

    국내 비주거용 건물을 대상으로 한 제로에너지건축물 본인증 사례와 기술요소 분석

    Jeon, Ji-Woon, Song, Gook-Sup, Jun, In-Ah, Won, Jong-Yeon

    전지운, 송국섭, 전인아, 원종연

    This report presented the process of ZEB (zero energy building) main certification for a office building based on Korean regulation. The total ... + READ MORE
    This report presented the process of ZEB (zero energy building) main certification for a office building based on Korean regulation. The total design strategies were included combining passive design, active design, renewable energy generation and BEMS (building energy management system). Finally, the primary energy consumption was calculated to 137.2 kWh/m2.y and CO2 emission was 27.0 kg/m2. The building energy efficiency rating was evaluated 1++ grade. Preliminary certification for ZEB was acquired through the energy consumption/generation calculation using the ECO2 official simulation program. The main certification for ZEB was acquired through the inspections for the design elements after the building construction. - COLLAPSE
    October 2018
  • Research Article

    A Study on the Definition of Energy Consumption Pattern in Single Person Household

    한국 1인 가구 거주자 생활패턴을 고려한 에너지 소비패턴 유형 정의

    Kim, Sol, Jung, Sung-Won, Kim, Da-Hee

    김솔, 정성원, 김다희

    The purpose of this paper is to define a clusters of occupant’s energy consumption pattern and analyze its energy consumption by clusters. ... + READ MORE
    The purpose of this paper is to define a clusters of occupant’s energy consumption pattern and analyze its energy consumption by clusters. A study method was performed using K-modes clustering to analyze categorical variable. Then, they simulated using EnergyPlus, which resulted in energy consumption. As a result, there are 7 clusters of occupant’s energy consumption pattern in single-person household in South Korea. Comparison of 7 clusters resulted in differences in age, gender, income, and care needs, which caused difference in energy consumption. The result of this study could be used as a basis for the study of residential energy and as information on energy saving solution. - COLLAPSE
    October 2018
  • Research Article

    Development Study on the Measuring Equipment of Solar Heat Gain Performance for Smart Skin

    스마트 스킨의 일사획득성능 측정을 위한 측정 장비 개발 연구

    Kim, Seok-Hyun, Cho, Soo

    김석현, 조 수

    For energy saving in building, the manufacturer of architectural material has improvement the performance of window. But recently the designer and constructor ... + READ MORE
    For energy saving in building, the manufacturer of architectural material has improvement the performance of window. But recently the designer and constructor prefer to wide part of window at building envelope because of fine view of building. The wide part of window at building envelope has raised to thermal performance for energy saving. So many researcher and productor enhanced window performance by various effort. For the control of solar heat gain, the smart skin was developed from smart glass like an electrochromic glass and suspended particle display. Also the performance of solar heat gain on transmitting envelope of building became important for energy analysis. The measuring equipment of that performance was proposed too. This method was regulated to Korea industrial standard. But the use of solar simulator has some problem that difference between solar simulator and natural sunlight. This mean is that the effect of natural sunlight through window or smart skin do not confirmed about an energy consumption in building. Therefore authors studied many research and previous study about the solar heat gain performance of smart skin and measured the solar heat gain performance of glass through using the measuring equipment of the solar heat gain performance by use sunlight. The authors of this study were development of measuring equipment of SHGC. By the operation pretest of measuring equipment, the application of the measuring method was confirmed. And the results of measuring about solar heat gain coefficients showed to requirement of improvement about equipment for smart skin. - COLLAPSE
    October 2018
  • Research Article

    Development of a Operating Method for Variable Water Flow Rate Control Method in Geothermal Heat Pump System

    지열시스템 순환펌프 변유량 제어를 활용한 운영 방안 개발

    Shin, Ji-Hyun, Choi, Dong-Hee, Cho, Young-Hum

    신지현, 최동희, 조영흠

    The purpose of this study is to develop an operating method of geothermal heat pump system to prevent waste of energy due ... + READ MORE
    The purpose of this study is to develop an operating method of geothermal heat pump system to prevent waste of energy due to inefficient operation. As the interest in energy saving is increasing, the development and use of renewable energy systems is increasing. In korea, While the geothermal system with excellent performance is installed, the other heat source system is used as the main heat source, or the system operates in the partial load state, resulting in waster of energy by controlling the fixed flow rate of the geothermal circulation water. Therefore, the purpose of this study is to develop an operating method of several geothermal heat pump system through the variable water flow rate control method of circulation pump. The proposed operating method is tested through simulation. - COLLAPSE
    October 2018
  • Research Article

    Economic Analysis of Geothermal Heat Pump System through Application of Operating Data

    운영현황 분석을 통한 지열 히트펌프 시스템의 경제성 평가

    Shin, Ji-Hyun, Lee, Jin-Hyun, Cho, Young-Hum, Kim, Yong-In

    신지현, 이진현, 조영흠, 김용인

    In this study, economic analysis is carried out by applying the geothermal input/output temperature, power consumption and performance information based on the ... + READ MORE
    In this study, economic analysis is carried out by applying the geothermal input/output temperature, power consumption and performance information based on the actual operating data of the geothermal heat pump system. The economic is analyzed and compared with the chiller-heater system and geothermal heat pump system which applied the existing economic analysis method. As a result, the initial investment cost of geothermal heat pump system was higher than that of the chiller-heater system but the operation cost was reduced. It is also confirmed that the payback period is shortened when the economic is analyzed according to the operating data as compared with the existing economic analysis method of the geothermal heat pump system. In this study, the economic analysis result changes according to application of operating data and application of operating data is necessary for accurate economic analysis. - COLLAPSE
    October 2018
Journal Informaiton Agriculture and Life Sciences Research Institute Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
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