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RISS 인기검색어
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- 저자 : 정광섭(Chung, Kwang-Seop) (검색결과 168 건)
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공기조화, 냉동 분야의 최근 연구 동향 -2002년 및 2003년 학회지 논문에 대한 종합적 고찰 -
정광섭,김민수,김용찬,박경근,박병윤,조금남,Chung Kwang-Seop,Kim Min Soo,Kim Yongchan,Park Kyoung Kuhn,Park Byung-Yoon,Cho Keumnam 대한설비공학회 2004 설비공학 논문집 Vol.16 No.12
A review on the papers published in the Korean Journal of Air-Conditioning and Refrigerating Engineering in 2002 and 2003 has been carried out. Focus has been put on current status of research in the aspect of heating, cooling, air-conditioning, ventilation, sanitation and building environment/design. The conclusions are as follows. (1) Most of fundamental studies on fluid flow were related with heat transportation in diverse facilities. Drop formation and rivulet flow on solid surfaces were interesting topics related with condensation augmentation. Research on micro environment considering flow, heat transfer, humidity was also interesting to promote comfortable living environment. It can be extended considering biological aspects. Development of fans and blowers of high performance and low noise were continuing research topics. Well developed CFD technologies were widely applied for analysis and design of various facilities and their systems. (2) Heat transfer characteristics of enhanced finned tube heat exchangers and heat sinks were extensively investigated. Experimental studies on the boiling heat transfer, vortex generators, fluidized bed heat exchangers, and frosting and defrosting characteristics were also conducted. In addition, the numerical simulations on various heat exchangers were performed and reported to show heat transfer characteristics and performance of the heat exchanger. (3) A review of the recent studies shows that the performance analysis of heat pump have been made by various simulations and experiments. Progresses have been made specifically on the multi-type heat pump systems and other heat pump systems in which exhaust energy is utilized. The performance characteristics of heat pipe have been studied numerically and experimentally, which proves the validity of the developed simulation programs. The effect of various factors on the heat pipe performance has also been examined. Studies of the ice storage system have been focused on the operational characteristics of the system and on the basics of thermal storage materials. Researches into the phase change have been carried out steadily. Several papers deal with the cycle analysis of a few thermodynamic systems which are very useful in the field of air-conditioning and refrigeration. (4) Recent studies on refrigeration and air-conditioning systems have focused on the system performance and efficiency enhancement when new alternative refrigerants are applied. Heat transfer characteristics during evaporation and condensation are investigated for several tube shapes and new alternative refrigerants including natural refrigerants. Efficiency of various compressors and performance of new expansion devices are also dealt with for better design of refrigeration/air conditioning system. In addition to the studies related with thermophysical properties of refrigerant mixtures, studies on new refrigerants are also carried out. It should be noted that the researches on two-phase flow are constantly carried out. (5) A review of the recent studies on absorption refrigeration system indicates that heat and mass transfer enhancement is the key factor in improving the system performance. Various experiments have been carried out and diverse simulation models have been presented. Study on the small scale absorption refrigeration system draws a new attention. Cooling tower was also the research object in the respect of enhancement its efficiency, and performance analysis and optimization was carried out. (6) Based on a review of recent studies on indoor thermal environment and building service systems, it is noticed that research issues have mainly focused on several innovative systems such as personal environmental modules, air-barrier type perimeterless system with UFAC, radiant floor cooling system, etc. New approaches are highlighted for improving indoor environmental conditions and minimizing energy consumption, various activities of building energy management and
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PLS 회귀분석을 통한 서울디지털산업단지 이용자 만족도 영향요인 규명
정광섭(Chung, Kwang-Seop),박규용(Park, Gyu-Yong),이주형(Lee, Ju-Hyung) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.6
국내의 산업단지는 노후화와 환경문제 등으로 인하여 점점 더 경쟁력을 상실하고 있는 실정이다. 첨단산업단지로의 재편을 위해 공공 및 환경디자인의 질적 향상과 경쟁력 강화를 위한 방향성 정립이 시의적으로 필요하다. 본 연구는 서울디 지털산업단지의 이용자 만족도에 영향을 미치는 계획요인을 PLS 회귀모형을 통해 규명하고자 하였다. 분석결과, 총 32개의 계획요인 중 중요도(VIP)값이 1.0 이상으로 매우 의미 있는 디자인 계획요인이 12개로 나타났으며, 0.9~1.0 사이의 비교적 중요한 계획요인이 8개로 도출되었다. 이들 계획요인은 디자인개선사업 시행 시 정량적 우선순위를 가늠할 수 있는 전략적 디자인 계획요인으로 판단할 수 있으며, 서울디지털산업단지의 경쟁력 강화에도 도움이 될 것으로 사료된다. Domestic industrial complexes have more loss competitiveness due to their deterioration length and environmental problems. Therefore, it is necessary to suggest the direction of realignment as advanced industrial estates and establish new alternative plans for improving the quality of public and environmental designs as well as reinforcing the competitive power. This study examined the design planning factors affecting the service users’ satisfaction in the Seoul Digital Industrial Complex through a PLS regression model. The research result showed that 12 crucial design planning factors out of a total 31 planning factors have a more than 1.0 VIP. In addition, 8 comparatively important planning aspects that were measured between 0.9 and 1.0 were also investigated. These factors were the strategic design planning factors estimating the quantitative priority while enforcing the design improvement project and they should be considered as a useful material for strengthening the competitive power of the Seoul Digital Industrial Complex.
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LCC기법을 이용한 공동주택 단지의 난방배관 열손실에 대한 경제성 분석 연구
정광섭(Chung Kwang-Seop),김영일(Kim Young-Il),박동식(Park Dong-Sik),김성민(Kim Sung-Min) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.6
We are at an interesting juncture in our power and energy generation history. Not only we are to reduce our dependence on foreign sources of fuel and energy sources, but we must also develop inexpensive and indigenous sources of power and energy that are safe, reliable, and environmentally benign. The objective of this research is to save heating energy consumption of apartments which accounts for about 7% of the total energy consumption. To minimize heat loss during the transportation of heat from supplier to consumer, several pipe insulation materials were tested and analyzed. Economic analysis was done using LCC(life cycle cost) method. The results show that the life cycle cost of polyethylene insulation is 9% less than the glass wool insulation, and 17% less than the NBR elastomeric flexible cellular insulation.
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지역난방 공동주택에서 외기온도가 난방부하 패턴에 미치는 영향에 관한 연구
정광섭(Chung Kwang-Seop),김성민(Kim Sung-Min) 대한건축학회 2009 대한건축학회논문집 Vol.25 No.2
During the last decade, an increasing interest in district heating system has emerged. In this paper, the physical measurements and data monitoring by internet were carried out with regard to heating energy consumption at the three apartment housings with district heating system in Ilsan district, Korea. Measurements were made of the thermal factors such as the pressure of heating pipe, flow rates, hot water temperature and etc. The purpose of this paper is to evaluate comprehensively the effect of variable outdoor temperature upon the heating load pattern in apartment housings with district heating system in order to develope the design criteria of this system and to understand the heating energy consumption pattern of user. Furthermore, the paper sets up the database of heating energy consumption in order to forecast the heating energy demand of apartment housings. As the result of the study, it can be seen that average heating load per unit area decrease to the rate of 7.1% according to the rise of 1℃ of the average outdoor temperature. Thus, it suggests the basic data for assessing the design criteria of heating energy consumption based on the field measurements and survey in district heating system.
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