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The purpose of this study is to analyze the scope of the expected improvement effect of office buildings and educational research facilities according to green remodeling. Thus, in order to quantitatively grasp the architectural performance of the existing buildings, the building thermal performance, the airtightness, the indoor environment, and the air quality were measured using equipment. The analysis indicated that the envelope performance and the indoor environment were unsatisfactory compared to the current legal standards, and for indoor air quality, CO2 and formaldehyde were measured to be dissatisfactory in some buildings. The energy analysis results indicated that the improvement range differed according to the renovation history for each building, resulting in differences in the energy-saving rate for each alternative. The reduction rates of primary energy consumption using energy simulation were 38.5–67.4% for office buildings and 23.7–66.3% for educational research facilities, and the payback periods were 14 to 27 years for office buildings and 12 to 30 years for educational research facilities. These results are expected to contribute to the activation of green remodeling because they can be used as indicators to predict the expected construction cost, the payback period, and the expected effect required for green remodeling.
Seunghoon Nam; Jaemoon Kim; Duwhan Lee. Current Status of Aged Public Buildings and Effect Analysis Prediction of Green Remodeling in South Korea. Sustainability 2021, 13, 6649 .
AMA StyleSeunghoon Nam, Jaemoon Kim, Duwhan Lee. Current Status of Aged Public Buildings and Effect Analysis Prediction of Green Remodeling in South Korea. Sustainability. 2021; 13 (12):6649.
Chicago/Turabian StyleSeunghoon Nam; Jaemoon Kim; Duwhan Lee. 2021. "Current Status of Aged Public Buildings and Effect Analysis Prediction of Green Remodeling in South Korea." Sustainability 13, no. 12: 6649.
In this study we propose a recurrent EER (Energy Efficiency Retrofit) policy model incorporating Deming's PDCA (Plan-Do-Check-Act) cycle, considering the policy characteristics of EER as a way to reduce GHG (greenhouse gas) emissions. To make this recurrent EER policy model feasible in practice, not as a mere theory, we supplement it with practical plans and policy tools that are being implemented in major countries where the EER policy is active. In developing this policy model, the methods for evaluating EER performance and implanting the EER policy are manifested to reflect the objectives and characteristics of EER policy. Applying this policy model to South Korea’s EER policy, which is in its infancy, we suggest major ways to improve policy and to operate the recurrent EER policy model: the establishment of quantitative EER performance goals, a system to evaluate energy savings before and after EER, and a subsidy policy for activation of EER is needed. Also, technical council and institutional support are needed to reflect the analyses of the data collected on energy consumption and to prepare supplemental plans, such as the system for improving directions, new technology, environmental changes, and technical support when planning the next EER.
Jaemoon Kim; Sungmin Lim. A direction to improve EER (Energy Efficiency Retrofit) policy for residential buildings in South Korea by means of the recurrent EER policy. Sustainable Cities and Society 2021, 72, 103049 .
AMA StyleJaemoon Kim, Sungmin Lim. A direction to improve EER (Energy Efficiency Retrofit) policy for residential buildings in South Korea by means of the recurrent EER policy. Sustainable Cities and Society. 2021; 72 ():103049.
Chicago/Turabian StyleJaemoon Kim; Sungmin Lim. 2021. "A direction to improve EER (Energy Efficiency Retrofit) policy for residential buildings in South Korea by means of the recurrent EER policy." Sustainable Cities and Society 72, no. : 103049.
The purpose of this study was to analyze energy performance along with the effect on the improvement in the indoor environment and air quality through the empirical case of the Full Energy Efficiency Retrofit (EER) in Korea. To increase the improvement effect objectivity, changes before/after the Full EER were measured and compared through various special equipment. The Full EER implementation through energy diagnosis, indoor environment, and air quality measurement led to the derivation of seven areas of improvement. Considering the efficiency of energy cost, the optimal full EER model of alternatives based on the area was selected, and passive design techniques were applied to enhance improvement effect during design and construction. After building the Full EER, the Predicted Mean Vote (PMV)/Predicted Percentage of Dissatisfied (PPD) satisfied the criteria (before the Full EER: unsatisfied) regarding the indoor environment. Concerning indoor air quality, more than 30% improvement was observed in all the items except CO2, and criteria were met. Considering changing heat source equipment, improvement in energy performance was compared by converting the usage of energy into carbon emission; it was reduced by 5.9% and 2.7% on a cooling/heating basis, respectively, and by approximately 12% ($14,000) regarding annual energy consumption cost. This result is expected to facilitate future Full EER activation by mitigating uncertainty regarding energy consumption cost for the Full EER improvement effect and demonstrating additional improvements related to the indoor environment and air quality.
Jae Moon Kim; Seung Hoon Nam. IEQ and energy effect analysis according to empirical Full Energy Efficiency Retrofit in South Korea. Energy and Buildings 2020, 235, 110629 .
AMA StyleJae Moon Kim, Seung Hoon Nam. IEQ and energy effect analysis according to empirical Full Energy Efficiency Retrofit in South Korea. Energy and Buildings. 2020; 235 ():110629.
Chicago/Turabian StyleJae Moon Kim; Seung Hoon Nam. 2020. "IEQ and energy effect analysis according to empirical Full Energy Efficiency Retrofit in South Korea." Energy and Buildings 235, no. : 110629.