• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.422-425
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• 2009

A sea water source cascade heat pump was designed and tested in this study. The system was designed to perform a single stage operation in summer, as well as a cascade operation in winter to ensure the high temperature lift. A steady-state simulation model was developed to analyze and optimize its performance. The simulation results show that the R717 exhibits best performance among combinations considered in this study. A R410A also exhibits the highest performance among HFCs with the smallest compressor displacement. A 15-RT R410A-R134a pilot system was installed in the 5-story commercial building at Samcheok City by the East Sea. A scroll type R410A compressor, a reciprocating type R134a compressor, plate type condenser/evaporator/ cascade heat exchanger and two electronic expansion valves were used to build a pilot. A titanium plate type heat exchanger is also used for the heat exchanging with a sea water. The heat source/sink water is supplied from the well below the seashore in the depth of 5 m. In the initial test of the system, supply water temperature was rising up to $67^{\circ}C$ using a sea water heat source of $9^{\circ}C$, while an ambient temperature was $4.5^{\circ}C$.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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• pp.275-280
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• 2008

Photovoltaic(PV) permit the on-site production of electricity without concern for fuel supply or environmental adverse effects. The electrical power is produced without noise and little depletion of resources. So BIPV(Building-Integrated Photovoltaic) system have been increased around the world. Hereby the relative installation costs of the system will be relatively low compared to traditional installations of PV in high-rise buildings. This paper examined possibility of BIPV system of cold facade type and analyzed of performance of BIPV system of cold facade type. The system is influenced by conditions such as irradiation, module temperature, shade and architectural component etc. If this BIPV system of 1.1kW is possible the natural ventilation in the summer case, the temperature of PV module decrease and then the efficiency of PV system increase generally. By the results, the annual averaged PR of BIPV system of cold facade type is about 73.1%.

• Animal cells and systems
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• 제14권3호
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• pp.225-236
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• 2010

We compared the composition of phospholipid fatty acids (PLFA) to assess the microbial community structure in the soil and rhizosphere community of non-transgenic watermelons and transgenic watermelons in Miryang farmlands in Korea during the spring and summer of 2005. The PLFA data were seasonally examined for the number of PLFA to determine whether there is any difference in the microbial community in soils from two types of watermelons, non-transgenic and transgenic. We identified 78 PLFAs from the rhizosphere samples of the two types of watermelons. We found eight different PLFAs for the type of plants and sixteen PLFAs for the interaction of plant type and season. The PLFA data were analyzed by analysis of variance separated by plant type (P<0.0085), season (P<0.0154), and the plant type${\times}$season interaction (P<0.1595). Non-parametric multidimensional scaling (NMS showed a small apparent difference but multi-response permutation procedures (MRPP) confirmed that there was no difference in microbial community structure for soils of both plant types. Conclusively, there was no significant adverse effect of transgenic watermelon on bacterial and fungal relative abundance as measured by PLFA. We could reject our hypothesis that there might be an adverse effect from transgenic watermelon with our statistical results. Therefore, we can suggest the use of this PLFA methodology to examine the adverse effects of transgenic plants on the soil microbial community.

• 태양에너지
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• 제18권2호
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• pp.105-113
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• 1998

일반적으로 열 다이오드(thermo-diode)란 임의의 한 방향으로만 열 전달이 가능하도록 설계된 열 전달 기구이나, 열 흐름이 원하는 방향으로 이루어지는 양방향 열 다이오드를 사용한다면 겨울철 난방과 여름철 냉방부하 감소에 모두 효과적으로 적용될 수 있다. 본 연구에서는 루프형 양방향 열 다이오드를 응용한 태양열 이용 시스템을 설계 제작하였으며, test cell을 이용한 옥외 실험을 수행하여 실용 가능성을 확인하였다.

• 한국의류학회지
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• 제13권4호
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• pp.412-426
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• 1989

This study investigated the relationship of consumer type to perferred and purchased Styles by clothing, life style, demographic, and information variables. Four consumer types were identified in study 1 (Kim, 1988). There were the casual, mannish, elegant, and feminine types. The present study used 20 line drawings representing the styles of summer '87 Data were obtained from questionnaires completed by 624 consumers $15\~69$ years of age living in Seoul, and analyzed by multiple discriminant analysis, and CROSSTABS. Descriptive profiles of the four categories were developed differently by clothing, life style and demographic characteristics. Casual and elegant types were preferred by middle-aged and married women, while mannish and feminine types were preferred by unmarried and younger women. The preferred design types of these groups were related more to preferences for clothing styles than purchased styles. All variables except occupation contributed to discriminate purchased styles.

• Journal of the Korean Wood Science and Technology
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• 제20권2호
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• pp.23-30
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• 1992

An experimental external external collector type, solar dehumidification dryer was retrofitted with a simple computer-based control system. Solar, solar-dehumidification, and air-drying of 3cm-thick douglas-fir were carried out to investigate the drying-conditions and characteristics of this system, and to analyze the energy efficiencies of each drying met hods in summer. The drying rate of solar-dehumidification was 12%/day, which was about 2 times and 3 times faster than that of solar-and air-drying, respectively. The amount of diurnal temperature fluctuation inside the solar-dryer was greatly reduced and the energy efficiency was enhanced from 25% to 60% by the dehumidifier.

• KIEAE Journal
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• 제11권5호
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• pp.107-117
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• 2011

This paper aims to analyze architectural planning factors that could contribute to reductions in electricity consumption in the household of apartments, to apply energy saving methods at the design phase. These six architectural planning factors were orientation, building type (flat, tower block), standard floor access type (corridor access type, stair case type, EV hall access type), household location (floor), household opening type (one side opening, right angle opening, two sides opening or three sides opening), and bay on the facade (one bay, two bays, three bays, four bays), and these were derived from literature review. Household electricity consumption data were gathered from 2168 households with a total area of 135~150$m^2$ of 6 apartment complexes over 1000 households in Seoul. The annual characteristics of electricity consumption according to architectural planning factors were analyzed. And, variances between groups with respect to the mean of summer, winter, and annual electricity consumption according to each architectural planning factors were analyzed using ANOVA and t-test. The results showed that an annual electric energy saving of over 1000kWh was facilitated by these planning factors. In addition, high energy efficiency architectural planning factors based on the analysis were as follows: southwest orientation, flat type, corridor access type and staircase type, household loation below the 20th floor, two sides opening and three sides opening, and 2 bays and 3 bays.

• 한국자원식물학회지
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• 제19권2호
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• pp.227-231
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• 2006

본 연구는 2종류의 하우스, 즉 1-2W 형 하우스와 무기둥하우스에, 시설억제재배, 촉성계배, 반측성재배 그리고 여름재배의 4 재배시기에 8개의 오이 품종을 재식하여, 재배시기에 따른 품종들의 암수꽃의 발생, 개체 당 과실수에 따른 퇴화 과실수, 그리고 수량을 조사 비교하여 각 작형에 알맞은 품종들을 추천하기 위해 수행하였다. 시설억제재배에서는 낙합계나 흑진주계 또는 입추백다다기오이가 생육 및 수량이 양호하였고, 촉성재배에서는 겨우살이청장오이, 입추백다다기오이 그리고 가을낙합오이가 추천된다. 반측성재배에서는 청장계 오이나 낙합계 오이가 비교적 양호한 수량을 보였으며 여름재배에서는 남부청장오이나 가을낙합오이가 양호하였다.

• 복식문화연구
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• 제7권5호
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• pp.33-45
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• 1999

Examine the dress which the Emperor actually wore in Gun-ryung 42nd year of Ching dynasty, comparison of 《Cheong-hoi-jeon-do》 with the Emperors year-round dress in Gun-ryung the 41st year was made and summarize the result as follows. It was used almost similar to the code of 《Cheong-hoi-jeon-do》. Though the materials and colors were more diverse than those of the previous year, it seems that actual use of material was plain under the influence of mourning. All the materials for summer hat were rattans. And velvet was the material for the patrol hat, but actually used before they change to summer material after fur use was over according to the season, which can be said as more reasonable use than the code. Materials of coat were more diverse than the precious year and also they put on ko-hemp cloth which was not found in the previous year. This can be understood that they expressed their guilt-consciousness to the dead as dress material by wearing ko-hemp cloth during the summer after periiod of mourning was over. And they put on the ko-hemp, the Emperors ordinary dress, much longer time than the previous year and this seems to be coherent to the meaning of wearing ko-hemp cloth. They followed the Emperor\`s Jo-bok1 one for the Kae-bok which were not systematized and Jae-dae used Jo-dae2 as the Emperor\`s Jae-bok in 42nd year. This was the same as the Jae-bok code of the previous year. Jo-ju did not follow the code of 《Cheong-hoi-jeon-do》, but made a wide variety. For the belt, the same as 41st year, it marked the gem decoration style on the Jae-bok belt as a square type and mourning dress by using the round type. The Emperors dress in 41nd year showed one side of the patrol clothes by the patrol of San-dong. On the contrary, it was also the chance to see one side of funeral garments in 42nd year. In Gun-ryung 42nd year, the Emperor put on the funeral garments for hundred days. Accordingly even in parts, we can see that the Emperor wore two kinds of dress for hundred days, that is, color dress and white dress and white dress. While on duty, in other words, everyday dress was only blue color and also the same color for the belt and shoes. But didn\`t put on Jo-ju. When they were in mourning, they wore white dress and belt as a funeral garments, which were called Hyo-bok, Hyo-bok.

• 복식문화연구
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• 제24권5호
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• pp.531-543
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• 2016

The purpose of this study is to classify fashion lifestyle types for color planning and to propose color planning of spring & summer by fashion lifestyle by analyzing preferred colors by fashion lifestyle type. The survey was conducted on women between the ages of 30 and 59 using a separately prepared questionnaire and color sample table and also through one-on-one interviews. The results of this study are as follows. First, the participants' fashion lifestyles were divided into three categories: information individuality type, display type, and practicality type. Second, regarding basic colors: the basic color consistently used for a long time, it was found that there were significant differences in preferred hue and tone according to the types of fashion lifestyles. Specifically, the most preferred hue of all the fashion lifestyle types was achromatic color N and the most preferred tone was V. Third, regarding color trends: the trendy color occupying a market transiently, there were significant differences in preferred hue and preferred tone according to the types of fashion lifestyle. The most preferred hue of all the fashion lifestyle types was B. The most preferred tone of the information individuality type and the display type was V, and that of the practicality type was B. The study found that, in color planning, fashion lifestyles can function as an effective tool to subdivide consumers. Based on the empirical results of this study, I propose that color planning should be based on the type of fashion lifestyle.