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The concept of smart windows that can change the properties of windows and doors in response to external stimuli has recently been introduced. Smart windows provide superior energy savings and control of indoor environments. This concept can advance sustainable architecture, and it will make it possible to connect with the fourth industry, which has developed recently. However, unlike the relevant hardware, is advancing rapidly, research on methods of adjusting smart windows is slow. Therefore, in this study, an analysis of energy use over time was conducted on electrochromic windows, one of the main types of smart windows. Through this analysis, the optimal properties of electrochromic smart windows were identified, and an operation schedule was created. In addition, energy saving rates were derived through a comparison with existing architectural windows.
Jae-Hyang Kim; Jongin Hong; Seung-Hoon Han. Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings. Sustainability 2021, 13, 1815 .
AMA StyleJae-Hyang Kim, Jongin Hong, Seung-Hoon Han. Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings. Sustainability. 2021; 13 (4):1815.
Chicago/Turabian StyleJae-Hyang Kim; Jongin Hong; Seung-Hoon Han. 2021. "Optimized Physical Properties of Electrochromic Smart Windows to Reduce Cooling and Heating Loads of Office Buildings." Sustainability 13, no. 4: 1815.
The paper aims to evaluate the psychological factors of the comfort performance of the hanok. This is to guide restoration and improvement in consideration of the intangible variables that provide the quality of the hanok. Through this process, we ultimately intend to build an integrated residential performance evaluation system that includes factors related to the quality of residents’ lives, such as the comfort of their surrounding and indoor environment, as well as the functionality and convenience of the hanok, a representative type of Korean traditional architecture. The test method to evaluate the comfort performance of hanok is largely divided into the physical perception element, which is a quantitative indicator, and the psychological cognitive element, which is a qualitative indicator. Physical perceptive factors are composed of nine quantifiable factors that can be measured by numerical values, namely humidity control, condensation, insulation, thermal comfort, air permeability, solar radiation, solar lighting, sound insulation, and air cleanness. This is a perceptual concept of viewing a building as it is, and a quantitative evaluation method of measuring data in the field using environmental sensors and equipment. Psychological cognitive factors that are evaluated based on the experiences of users (residents) living in hanok, are classified into five categories, of scenery, beauty, deodorization, usability, and health. This study was conducted through a questionnaire between experts and users (residents), limited to the psychological factors among methods of evaluating the comfort performance of hanok. As a result, it can be seen that environmental factors are the main variables that influence the degree of satisfaction with the psychological perception factor. This might be a merit factor of general hanok, and weight could be given when creating an integrated standard in the future.
Mi-Hyang Lee; Deuk-Youm Cheon; Seung-Hoon Han. A Technical Assessment of Comfort Performance of Hanok Using Comparative Field Surveys between Experts and Users. Sustainability 2020, 12, 10315 .
AMA StyleMi-Hyang Lee, Deuk-Youm Cheon, Seung-Hoon Han. A Technical Assessment of Comfort Performance of Hanok Using Comparative Field Surveys between Experts and Users. Sustainability. 2020; 12 (24):10315.
Chicago/Turabian StyleMi-Hyang Lee; Deuk-Youm Cheon; Seung-Hoon Han. 2020. "A Technical Assessment of Comfort Performance of Hanok Using Comparative Field Surveys between Experts and Users." Sustainability 12, no. 24: 10315.
Previous research has shown Dye-Sensitized Solar Cells (DSSCs) to have excellent applicability for building exterior materials and windows, because they can be controlled in terms of Visible Light Transmittance (VLT) and color, and thus have good variability. However, windows with solar cells may not show ideal energy generation efficiency. This depends on a variety of factors, such as window composition, shadow, and light scattering. In this paper, through mock-up tests, the energy generation of DSSCs with various transmittances and colors was measured. Red, Green, and Blue (RGB)-based DSSCs of 7, 10, and 20% VLT were used, and Pmax values were measured for solar radiation for comparison. As a result of the comparison, performance estimates were made for each color and VLT when used as a window. In this study, the electrical energy generated by DSSCs was measured in an environment applied to a real window, not a virtual environment. Therefore, the study is meaningful, in that data that can estimate performance when applying various types of DSSCs in a real-world window environment were created.
Jae-Hyang Kim; Seung-Hoon Han. Energy Generation Performance of Window-Type Dye-Sensitized Solar Cells by Color and Transmittance. Sustainability 2020, 12, 8961 .
AMA StyleJae-Hyang Kim, Seung-Hoon Han. Energy Generation Performance of Window-Type Dye-Sensitized Solar Cells by Color and Transmittance. Sustainability. 2020; 12 (21):8961.
Chicago/Turabian StyleJae-Hyang Kim; Seung-Hoon Han. 2020. "Energy Generation Performance of Window-Type Dye-Sensitized Solar Cells by Color and Transmittance." Sustainability 12, no. 21: 8961.
The purpose of this research is to examine whether eum-taek, a feng shui theory for the dead, can be applied to Korean modern architecture. In the first step, common environmental factors that are valued in both feng shui and ecological architecture were derived, and then this research reviewed how properly the traditional site assessment method evaluated them; for example, metaphorized basic concepts of the evaluation theory based on territorial settings can be applied to evaluate common environmental factors. For the second step, this paper reviewed whether the evaluation method for feng shui presented in the previous step was applied equally between yang-taek and eum-taek theories, investigated the differences between them in general, and derived environmental factors to be utilized for evaluation in the field of architecture. As a result, it was found that the major concepts presented in the previous step have been commonly used evaluation criteria, regardless of the categories from traditional theories. The third step was to simulate whether sites selected by each theory actually have similar environmental conditions. The simulation analysis found that all analysis sites were able to obtain a higher sun exposure time than the Korean average; therefore, it was considered that their locations could have environmental advantage, in terms of solar radiation and thermal environment. The simulation results confirm that the target sites have a living environment that would be easy for humans to live in. Finally, the simulation results confirm that the eum-taek site has a living environment that is comfortable for humans to live in. If studies of the site assessment method are carried out considering yang-taek and eum-taek with different evaluation categories, the modern applicability of feng shui may increase.
Seung-Ju Choe; Seung-Hoon Han. Applicability of Feng Shui Concepts for Korean Eum-Taek Sites Verified Using Three-Dimensional Digital Mapping and Simulations. Sustainability 2020, 12, 8904 .
AMA StyleSeung-Ju Choe, Seung-Hoon Han. Applicability of Feng Shui Concepts for Korean Eum-Taek Sites Verified Using Three-Dimensional Digital Mapping and Simulations. Sustainability. 2020; 12 (21):8904.
Chicago/Turabian StyleSeung-Ju Choe; Seung-Hoon Han. 2020. "Applicability of Feng Shui Concepts for Korean Eum-Taek Sites Verified Using Three-Dimensional Digital Mapping and Simulations." Sustainability 12, no. 21: 8904.
Windows with various colors are important design elements used widely ranging from traditional architecture to contemporary buildings to express the architectural façade, the interior atmosphere, and so on. Recently, there is a possibility that solar cells can be used to replace windows with various colors. In particular, attempts to manufacture windows using Dye-Sensitized Solar Cells (DSSCs) are actively underway. Accordingly, there is a need to determine physical and environmental performances of DSSCs. This study attempted a methodological approach to evaluate indoor environmental performance of windows and DSSCs. The concept of color gamut overage normally used in the field of displays was utilized to evaluate color expressions. In addition, a standard visual inspection table suggested by the International Ophthalmological Society was used to evaluate the recognition of shapes. This study compared performances between RGB color windows and DSSCs using the two above previous concepts. Measurement data showed that most DSSCs performed poorly in comparison with architectural color windows. However, some DSSCs showed good enough performances that could be used as alternatives of architectural color windows. Green DSSCs with VLT 18% had a color gamut similar to clear glasses. Blue DSSCs with VLT 18% were found to have similar or better shape recognition than current architectural color windows. Based on these results, limitations of DSSCs as alternatives of architectural color windows and their future development directions are suggested.
Jae-Hyang Kim; Seung-Hoon Han. A Quantification Procedure for Interior Performance of Architectural Openings Associated with Dye-Sensitized Solar Cells. Sustainability 2019, 11, 6461 .
AMA StyleJae-Hyang Kim, Seung-Hoon Han. A Quantification Procedure for Interior Performance of Architectural Openings Associated with Dye-Sensitized Solar Cells. Sustainability. 2019; 11 (22):6461.
Chicago/Turabian StyleJae-Hyang Kim; Seung-Hoon Han. 2019. "A Quantification Procedure for Interior Performance of Architectural Openings Associated with Dye-Sensitized Solar Cells." Sustainability 11, no. 22: 6461.
The purpose of this study was to examine the applicability of feng shui ideas for sustainable space planning and evaluation in the Korean contemporary architecture system. This study compares theories of feng shui and ecological architecture, draws implications in terms of its practicability with an accreditation system, and explores the possibility of replacing elements from ecological architecture with those of feng shui. First, this study analyzed the terrain, climate, and environment by selecting target sites for planning a hanok, the traditional Korean residence, as a suitable location (called myeong-dang). Simulation assessments were then performed with three-dimensional (3D) mapping techniques to derive the scientific basis of the traditional concept considered in the selection of these spots. Our result from the analysis showed that the terrain element played protective roles for the climate of the region as an environmental control system. Therefore, it can be concluded that feng shui thoughts could be applied to a contemporary architecture system.
Seung-Ju Choe; Seung-Hoon Han. Applicability of Feng Shui Thoughts for Sustainable Space Planning and Evaluation in Korea Verified Using Three-Dimensional Digital Mapping and Simulations. Sustainability 2019, 11, 5578 .
AMA StyleSeung-Ju Choe, Seung-Hoon Han. Applicability of Feng Shui Thoughts for Sustainable Space Planning and Evaluation in Korea Verified Using Three-Dimensional Digital Mapping and Simulations. Sustainability. 2019; 11 (20):5578.
Chicago/Turabian StyleSeung-Ju Choe; Seung-Hoon Han. 2019. "Applicability of Feng Shui Thoughts for Sustainable Space Planning and Evaluation in Korea Verified Using Three-Dimensional Digital Mapping and Simulations." Sustainability 11, no. 20: 5578.
Hanok is a building style in Korean traditional architecture that presently supports a specialty of urban scenery and residential environment for regeneration in Korea. However, it is difficult to review or evaluate for the performance of Hanok, and there is no definite standard that can be applied to it yet. Therefore, it is necessary to establish the evaluation system of the residential performance of Hanok, and its concept model of the habitability performance needs to be derived in order to develop an evaluation system for the residential performance of Hanok. For this study, its evaluation factors have been classified into three major aspects such as the architectural space, the village complex, and the sustainability. This study, then, has attempted to build an evaluation system composed of proven assessment items or factors and performed AHP (Analytic Hierarchy Process) analyses with certified experts in the Hanok field and applied the relative importance among the evaluation items. Finally, this research has proposed an evaluation model of the habitability performance of Hanok. As a result of applying the assessment model for weighted habitability performances, the proposed evaluation system has been implemented as the inherent value of Hanok and its objectivity to be a major sustainable form of regeneration for contemporary residency in Korea.
Mi-Hyang Lee; Deuk-Youm Cheon; Seung-Hoon Han. An AHP Analysis on the Habitability Performance Toward the Modernized Hanok in Korea. Buildings 2019, 9, 177 .
AMA StyleMi-Hyang Lee, Deuk-Youm Cheon, Seung-Hoon Han. An AHP Analysis on the Habitability Performance Toward the Modernized Hanok in Korea. Buildings. 2019; 9 (8):177.
Chicago/Turabian StyleMi-Hyang Lee; Deuk-Youm Cheon; Seung-Hoon Han. 2019. "An AHP Analysis on the Habitability Performance Toward the Modernized Hanok in Korea." Buildings 9, no. 8: 177.
Currently, user demands for Hanok, the Korean traditional building type, are increasing in Korea, and their use as residences and accommodations are especially booming, while public facilities are rarely built in the style of Hanok these days. One of the most critical reasons for the issue is that Hanok lack usability and are difficult to maintain as a public facilities. Therefore, it is improvement of the usability of Hanok is needed for them to be accepted as public buildings and to set up the maintenance strategy for the style of the wooden structure. This research has defined public buildings in Hanok and classified them into three types according to structural standards. Then, this study analyzed the characteristics of each type, and suggested a checklist for Hanok usability, employing it to analyze the most recent exemplar Hanoks built as results in the governmental research project, monitored them in aspects of the facility management focused on the wooden structure and suggested strategies for sustainability by deriving eight factors in usability and another eight major types of defects to review the current status of the maintenance for the wooden structure. Finally, this study proposed the main direction for Hanok maintenance to establish its strategies for sustainability.
Jeong-Hyuk Jeong; Deuk-Youm Cheon; Seung-Hoon Han. A Better Maintenance Strategy, a More Sustainable Hanok: Towards Korean Traditional Public Facilities. Buildings 2019, 9, 11 .
AMA StyleJeong-Hyuk Jeong, Deuk-Youm Cheon, Seung-Hoon Han. A Better Maintenance Strategy, a More Sustainable Hanok: Towards Korean Traditional Public Facilities. Buildings. 2019; 9 (1):11.
Chicago/Turabian StyleJeong-Hyuk Jeong; Deuk-Youm Cheon; Seung-Hoon Han. 2019. "A Better Maintenance Strategy, a More Sustainable Hanok: Towards Korean Traditional Public Facilities." Buildings 9, no. 1: 11.
Seung-Hoon Han; Mi-Hyang Lee; Deuk-Youm Cheon. Assessment Indexes for Habitability Performances Applicable to Hanok Focused on Household Types. KIEAE Journal 2018, 18, 5 -14.
AMA StyleSeung-Hoon Han, Mi-Hyang Lee, Deuk-Youm Cheon. Assessment Indexes for Habitability Performances Applicable to Hanok Focused on Household Types. KIEAE Journal. 2018; 18 (4):5-14.
Chicago/Turabian StyleSeung-Hoon Han; Mi-Hyang Lee; Deuk-Youm Cheon. 2018. "Assessment Indexes for Habitability Performances Applicable to Hanok Focused on Household Types." KIEAE Journal 18, no. 4: 5-14.
Seung-Hoon Han; Deuk-Youm Cheon; Mi-Hyang Lee; Ok-Kyun Im. A Study on the Establishment of an Evaluation System for Integrative Comfort Performance of Hanok Residence. Journal of the Korean Housing Association 2013, 24, 27 -35.
AMA StyleSeung-Hoon Han, Deuk-Youm Cheon, Mi-Hyang Lee, Ok-Kyun Im. A Study on the Establishment of an Evaluation System for Integrative Comfort Performance of Hanok Residence. Journal of the Korean Housing Association. 2013; 24 (3):27-35.
Chicago/Turabian StyleSeung-Hoon Han; Deuk-Youm Cheon; Mi-Hyang Lee; Ok-Kyun Im. 2013. "A Study on the Establishment of an Evaluation System for Integrative Comfort Performance of Hanok Residence." Journal of the Korean Housing Association 24, no. 3: 27-35.