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채호진,이정교 한국공간디자인학회 2019 한국공간디자인학회논문집 Vol.14 No.2
(Background and Purpose) Recently, the South Korean cafe market has become over-saturated. Cafes are places where people not only drink coffee and relax but also spend time for meetings, working on personal duties, and leisure activities. Recently, there has been a tendency to visit exotic cafes and consume new experiences within the individual’s daily lifestyle. However, most cafes do not reflect the needs of consumers and their lifestyles, and they offer only fragmentary services, under-performing and failing to satisfy customers with their uniqueness or differentiation. Therefore, the purpose of this research is to conduct a study on cafe spaces, to provide a new concept of service that all cafe should have, with a differentiated affective design applied to a positive function and the five senses. (Method) This research derives the spatial meaning of cafe spaces and the necessary elements of affective space expression directing characteristics through prior research and theoretical reflection, and utilizes them as elements of design expression. Through these parameters and factors, we propose the evaluation model for assessing the affective design of cafes, and derive the correlation and justification of elements including five senses and affective space designs. Based on the factors analyzed, this research aims to extract the necessary expression elements in the cafe space and propose the case analysis model through the five senses that can be applied to the space. (Result) According to the case analysis, it was revealed that each cafe's space was designed to fit the consumers' demand for something new, instead of a ordinary store presentation. It was also indicated that the cafe sought differentiation through service and sharing emotional experiences that it could not experience in other cafes even if the direction of expression differed. Depending on the meaning of the space and the purpose of the consumers' visit, different elements of expression were first provided through space research to reveal their unique characteristics. (Conclusion) We could see that among the characteristics of the space based on five senses and six elements of expression of affective design, there were expressions that should be prioritized according to the purpose of the visitor or the location of the place. However, design expression focused on only one direction could be directed into a consistent and unique cafe space, but it was also reflecting that the many spaces did not reflect the various demands of the consumers. Therefore, the meaning of this research is our hope to be able to offer this research as fundamental data and understanding of affective design in the future and wish to enlighten affective design cafe space research that requires five-sense of this era. (연구배경 및 목적) 최근 우리나라 카페시장은 과포화 상태에 이르고 있다. 카페는 사람들이 단순히 커피를 마시고 휴식을 취하는 것은 물론이고, 만남, 개인 작업, 여가활동을 하며 시간을 보내는 곳이기도 하다. 최근에는 독창적인 이색카페를 찾아다니며 새로운 경험과 각 개인의 라이프 스타일속으로 일상화하는 소비를 하고 싶어 하는 경향이 두드러지고 있다. 그러나 카페는 이용객들의 니즈와 그들의 라이프 스타일을 반영하지 못할뿐더러, 독특함과 차별화로 고객에게 만족감을 주지 못하면서, 단편적인 서비스만을 제공하는 곳이 대부분이다. 그러므로 본 연구는 카페가 가지고 있어야 할 순기능과 오감요소를 적용한 차별화된 감성디자인 표현이 적용된 새로운 개념의 서비스를 제공하는 카페 공간에 관하여 연구를 진행하는 것이 목적이다. (연구방법) 본 연구는 선행연구 및 이론고찰을 통해 카페 공간의 공간적 의미와 감성 공간 표현 연출특성 필요 요소를 도출하여 감성디자인 표현 요소로 활용한다. 이러한 인자요소를 통해 카페의 감성디자인 평가를 위한 상관관계의 평가모형을 제안하며 오감과 공간 감성디자인 요소들의 상관적 관계와 당위성을 도출한다. 그리고 분석한 요소들을 바탕으로 카페 공간에 필요한 표현요소를 추출하고, 공간에 적용할 수 있는 오감요소를 통해 사례 분석 모형을 제안한다. (결과) 사례 분석 결과 각 카페 공간들은 일률적인 매장 연출에서 벗어나 새로운 것을 요구하는 소비자들의 원츠에 맞게 연출하려고 하였다. 또한 카페가 추구하는 공간의 감성이 다르지만 다른 카페에서 경험할 수 없는 감성적 경험의 공유와 서비스를 통해 차별화를 추구하려고 했다는 것을 알 수 있었다. 특히 각 카페 공간들은 공간의 의미나 방문객의 방문 목적에 따라 각기 다른 표현요소들을 우선으로 공간연구를 통해서 제공하여 독특함을 가지고 있음을 알 수 있었다. (결론) 카페 공간에서 오감을 바탕으로 한 공간의 특성, 감성디자인의 표현 요소 6가지 중, 방문자의 목적이나, 그 장소의 위치에 따라 우선시해야 하는 표현요소들이 있음을 알 수 있었다. 하지만 하나의 방향으로만 집중된 디자인 표현은 일관성과 독특성 있는 카페 공간으로 연출이 될 수 있으나, 그 공간들은 니즈들의 다양한 원츠를 반영하지 못함을 알 수 있었다. 그러므로 본 연구를 통해서 앞으로 차별화된 감성 공간 요구의 특성 이해 및 기초자료로 활용되길 바라며, 현시대에 필요한 오감이 적용된 감성디자인 카페 공간 연구가 활성화되길 바라는 것이 의의라 할 수 있다.
Potassium-based dry sorbents for removal of sulfur dioxide at low temperatures
채호진,김재창,이수출,이수재,조민선,정석용,류춘용,권용목,황병욱,이중범 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.36 No.-
The SO2 sorption properties of dry potassium-based sorbents, prepared by impregnation of varioussupports with potassium carbonate, were investigated at the various water vapor concentrations at alevel of 5000 ppm of SO2. It was found that alkali metal-based sorbents promoted with potassiumcarbonate could be used as a sorbent for SO2 sorption at low temperatures (between 30 8C and 60 8C). Inparticular, the potassium-based sorbents showed an excellent SO2 sorption capacity of about 310 mgSO2/g sorbent in the presence of water vapor, while in the absence of water vapor, their SO2 sorptioncapacities decreased.
다이옥신 배출 저감 기술 현황: 활성탄 주입 기술을 중심으로
채호진(Ho Jin Chae),조성빈(Seong Bin Jo),김태영(Tae Young Kim),이수출(Soo Chool Lee),김재창(Jae Chang Kim) 한국에너지기후변화학회 2020 에너지기후변화학회지 Vol.15 No.2
The incineration ratio of municipal waste is gradually increasing for the treatment of the rapidly increasing waste. Waste incineration has the risk of releasing various pollutants, but among them, the emission of dioxin is the most strongly regulated. The formation mechanism of the dioxins are classified by gas phase synthesis at high temperatures (homogeneous pathway) and de Novo synthesis at relatively low temperatures (heterogeneous pathway). High temperature synthesis is closely related to furnace, and low temperature generation is closely related to energy recovery units and/or air pollution control devices (APCDs). In order to minimize the generation of dioxins in the furnace, it was considered that homogenization of the waste, optimization of operating conditions, using inhibitors, etc. And the APCDs was considered including activated carbon injection method, decomposition method by catalytic reaction, and decomposition method using other electrical technique. In this paper, we will look around the recent technological trends in these emission reduction technologies, and discuss the latest research trends focused on the use of activated carbon injection + bag filter system, which are currently the most widely used emission reduction technologies.
채호진(Ho Jin Chae),이수출(Soo Chool Lee),이예지(Yeji Lee),김재창(Jae Chang Kim) 한국에너지기후변화학회 2020 에너지기후변화학회지 Vol.15 No.1
Dioxin was first known to the world as an impurity agent of the defoliants used in the Vietnam War. It is known to be one of the most dangerous environmental pollutants that cause hormone imbalance even at very low concentrations, leading to the deterioration of reproductive function and malformation of reproductive organs. Among various sources of dioxins, solid waste incinerators are known to be the largest emission sources. In Korea, dioxin emissions have been regulated in waste incinerators since 1999, and waste incineration facilities have been forced to reduce dioxin emissions through various methods. In order to minimize the emission of dioxin from the incineration facilities, the reducing technologies are classified as follows: the homogenization of the waste (step 1), the minimization of dioxin generation through complete combustion in the incinerator (step 2), the suppression of dioxin re-synthesis in the incinerator and post-treatment processes (step 3), and finally, the installation of the flue gas treatment utilities for reducing dioxin (step 4). In order to reduce dioxin emissions considering economic efficiency, it is desirable to optimize the unit processes from a medium-integrated point of view. When designing a new incineration facility or deriving improvement points of existing facilities, it is important to select suitable flue gas treatment utilities, considering the characteristics of each unit process before the flue gas treatment steps. In this paper, we introduce the various methods before the flue gas treatment steps and the flue gas treatment utilities, respectively.
폐플라스틱 열분해 유화공정 잔류물의 성상분석에 의한 재활용 가능성 평가
채호진(Ho Jin Che),이수출(Soo Chool Lee),박노국(No-Kuk Park),김세정(Se Jeong Kim),김태윤(Tae Yoon Kim),김태진(Taejin Kim) 한국에너지기후변화학회 2019 에너지기후변화학회지 Vol.14 No.2
The purpose of this study is to evaluate the recyclability of carbon-based solids released as residues of the waste plastic low-temperature pyrolysis process. Waste plastic low-temperature pyrolysis process is a process to produce hydrocarbon oil from waste plastic made of polypropylene (PP), polyethylene (PE), polystyrene (PS) among the household wastes by the pyrolysis liquefaction process at 350°C. The final products from the pyrolysis process are pyrolysis oils and carbon-rich solids. In general, the solids are all buried in landfills, which can cause environmental pollution in the long run. Therefore, this study investigated the recyclability of these solid residues by analyzing their element composition. Solid properties were analyzed using TGA, XRD, XRF and SEM. It was found that 30% of the residue discharged from the low-temperature pyrolysis process of waste plastic was composed of carbon, approximately 40% of recyclable hydrocarbons, and about 30% of metal oxides. Metal oxides were found to contain mainly calcium, titanium, iron, and silica etc. Because the residue includes various impurities, the residue itself is somewhat difficult to use as a high value-added recycled raw material, and it may be used as the adsorbents/absorbents for removing heavy metals and trace contaminants. In addition, when a large amount of residue is secured, it respected to can be used as a raw material for producing syngas or recycling oils through gasification or liquefaction.