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윤재석(Jaesuk Yun),윤경식(Kyung Sik Yoon),이용섭(Yong-seop Lee),한경문(Kyoung moon Han),차혜진(Hye Jin Cha),신지순(Jisoon Shin),김영훈(Young-Hoon Kim),박혜경(Hye-Kyung Park),김형수(Hyung Soo Kim) 대한약학회 2017 약학회지 Vol.61 No.2
Narcotics, psychotropic substances, and marihuana are controlled by ‘Act on the control of narcotics, ETC’, ‘the 1961 Single Convention on Narcotic Drugs’, or ‘the 1971 Convention on Psychotropic Substances’. However, the abuse of new psychoactive substances (NPS) is an emerging problem in Korea. According to the United Nations Office on Drugs and Crime (UNODC), about 600 NPS are defined and rapid identification methods for NPS need to be developed. Nevertheless, several counter measures have been enforced in Korea. In the present study, 33 NPS including synthetic cannabinoids, phenethylamines, tryptamines, and aminoindanes were tested using Marquis, Duquenois-Levine, Zwikker, Madelin, and Liebermann reagents. Furthermore, we suggested a coloring test sequence for the preliminary identification of unknown substances.
김완철(Wan-Cheol Kim),이호준(Ho-Jun Lee),윤경식(Kyoung-Sik Yun),최승욱(Sung-Yug Choi),이장명(Jang Myung Lee) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.4
This paper proposes a modified and efficient method for tracking trajectory of moving objects in the dynamics image. This method could apply on the unmanned security system, the checker defected goods on Factory Automation and the unmanned automatic traffic control. Instead of using the expensive image processing board, an image grabber is used to transform the analog image to digital image. The low cost implementation expands the range of applications. To achieve the image processing in real time, a matrix method for detecting objects in this paper. After the segmentation process and finding a matrix coefficient, the matrix is multiplied by a coefficient - this is a convolution operation - and then the result is subtracted by the original background image. This subtracted value is used to determine the existence of objects.
공형진(Hyoung Jin Kong),강성재(Sung Jae Kang),윤경식(Kyoung Sik Yun),임효재(Hyo Jae Lim) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.3
Ground Source Heat Pump (GSHP) systems utilize geothermal energy as a thermal source or sink, for heating, cooling and domestic hot water. It is well known that GSHP is environmentally friendly, and saves energy dramatically. For this reason, many investigative researches have been conducted on commercial and governmental buildings. However, studies on residential GSHP are few, because of the small capacity and cost. In this study, we experimented with the characteristic performance of heating, cooling and seasonal performance factor for a residential GSHP system, which consisted of two 180 m deep u-tube ground heat exchangers, a heat pump and measurement instruments. The installed capacity of the heat pump was 5RT, and the conditioning area was 62.23 ㎡. From the experimental results, the cooling COP of the heat pump was 4.13, and the system COP was 3.51, while the CSPF was 3.32. On the other hand, the heating COP of the heat pump was 3.87, and the system COP was 3.39, while the HSPF was 3.39. Also, in-situ cooling COP and capacity were 93.7% and 96.4% compared with the EWT certification data, respectively, and that of heating were 98.3% and 95.7%, respectively.
가정용 지열원 열펌프 시스템을 이용한 바닥 난방 성능 연구
공형진(Hyoung Jin Kong),임효재(Hyo Jae Lim),윤경식(Kyoung Sik Yun),최재호(Jae Ho Choi),강성재(Sung Jae Kang) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.6
Residential ground source heat pump systems(GSHP) practically use the geothermal energy in providing building heating/cooling and hot water at the same time. The systems are not affected by ambient temperature and use constant temperature heat source and heat sink through the year, featuring as high efficiency and environmental friendliness. In this study, an analysis of the heating operation COP for GSHP floor heating system was conducted. Indoor average temperature was 25.1℃ with PB 6mm pipe and heating capacity of 2.1kW, and it was 22.3℃ with PB 12mm pipe and heating capacity of 2.2kW. Using capillary tube, Indoor average temperature became 26.5℃ with heating capacity of 4kW. During the heating operation, the calculated results showed heat extraction rate of 8.1kW, power consumption 3.1kW, and heating capacity of heat pump 11.2kW. In addition, the heating COP of heat pump was 3.6 and the heating COP of the system was 3.1.
강성재(Sung Jae Kang),공형진(Hyoung Jin Kong),윤경식(Kyoung Sik Yun),김갑득(Kap Duck Kim),임효재(Hyo Jae Lim),김일중(Il Jung Kim) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
Residential ground source heat pump systems(GSHP) practical use the geothermal energy of the building heating/cooling and hot water in same time. The system is consistent throughout the whole year heat pump geothermal energy(heat source) and the heat sink so as to use, energy use, it features by high efficiency and environmentally friendly. Ground source heat pump system utilizes the design of your home heating system through coefficient of performance(COP) by measuring the ground source heat pump expanded, the prevalence is considered an important little effect. Heat pump COP is the 3.80 to 4.80. System COP 3.10 and SPF 3.37. COP 24% heating capacity a 20% decrease has shown when EWT decreased 15%. In addition, the effectiveness of the ground heat exchanger for heating your home by comparing the optimal design for the floor heating system should be accompanied by a study.
지중 순환수 온도변화에 따른 지중 열교환기 성능 및 길이 변화 연구
공형진(Hyoung Jin Kong),강성재(Sung Jae Kang),윤경식(Kyoung Sik Yun),임효재(Hyo-Jae Lim),한지원(Ji-Won Han) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
This study was residential geothermal heat pump systems, of the heating operation according to out door temperature and variation EWT and length of ground heat exchangers of heating load change analyzed. EWT was according to the out door temperature was affected by the indoor heating load, then affected by the operation time. The results of this experiment show system maximum COP 6.0 to the minimum 2.9. moreover average COP is 3.47 and it was the heat extraction of average 15.2㎾ analyzed. Also EWT depending of change to the ground heat exchanger length was largest 55.2% to the lowest 9.5%.