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국내 주요도시의 운량데이터를 이용한 전일사 산출 및 비교
유호천(Yoo Ho-Chun),이관호(Lee Kwan-Ho),박소희(Park So-Hee) 한국태양에너지학회 2008 한국태양에너지학회 논문집 Vol.28 No.4
Estimation of typical solar radiation is very important for the calculations concerning many solar applications. But solar radiation measurements are not easily available bemuse of the expensive measuring equipment and techniques required. Accordingly, for regions where no solar radiation is measured, solar radiation need to be estimated using other meteorological data. However, currently in Korea, there is no study on how to do this. In this paper, the global radiation of the six major cities in South Korea where the global radiation is measured using comparatively simple CRM model was calculated compared and analyzed. The comparison between the original coefficient and the site-fitted coefficient for these cities are as follows. Differences between the site-fitted coefficient and the original coefficient for six cities are small. Except for Gwangju, both calculations show strong correlation. In case of Seoul, the R²(coefficient of determination) were 0.747 and 0.749. In case of Busan and Daegu the figures were 0.817, 0.819 and 0.820, 0.821 respectively. For Gwangju, these were 0.618 and 0.622, Thus, the site-fitted coefficients were slightly higher for these four cities. On the other hand, Daejeon and Incheon was reported 0.773, 0.772 and 0.785, 0.783, respectively.
유호천(Yoo Ho-Chun),이관호(Lee Kwan-Ho),강현구(Kang Hyun-Gu) 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월
kDomestic studies on meteorologicaldata have been carried out, however they were mostly not constant but limited to fragment compilation. The studies on solar energy, among others, have been relatively active but the measurement of solar irradiance is also limited to some extent. This study, in an effort to identify the difference in data between solar radiance and cloud cover, was intended to compare and analyze the typical meteorological data developed by Korean Solar Energy Society with the solar irradiance calculated using the typical meteorological data and cloud cover data provided by current simulation program. Monthly average solar irradiance from the meteorological data (ISO TRY) of Korea's typical meteorological data which was actuallymeasured appeared to be far below the monthly solar irradiance from the American Department of Energy. The solar irradiance calculated based on cloud cover indicates very limited difference between the two data, so the solar irradiance measured by Korean typical metrologicaldata (ISO TRY) indicated the similar value, which demonstrates the solar irradiance data from Korean Meteorological Administration is more accurate than those US National Weather Center.
건물 에너지 성능 평가용 서울ㆍ울산 표준기상데이터에 관한 연구
유호천(Yoo Ho-Chun),이관호(Lee Kwan-Ho),박소희(Park So-Hee),박유라(Park Yu-Ra),김경률(Kim Kyoung-Ryul) 한국건축친환경설비학회 2007 한국건축친환경설비학회 논문집 Vol.1 No.1
An energy performance of a building and its power consumption are estimated by using a computer simulation program in order to save the energy during its planning step of the construction. Weather data is an important variable for the estimation value of the program for evaluating energy performance. However, in the program for evaluating energy performance, weather data for domestic areas are not always included or weather data for domestic areas limited to certain areas in Seoul. Thus, the study is a foundation study suggesting weather data that is applicable to a computer simulation program reflecting characteristics of Korean weather.
FS 통계분석을 이용한 서울, 부산의 표준 일사량 산정
유호천(Yoo Ho-Chun),이관호(Lee Gwan-Ho),박소희(Park So-Hee),김경률(Kim Kyoung-Ryul) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Applying the daily global solar radiation data measured at least 23 years, the typical solar radiation year for meteorological stations of two cities located in South Korea is generated using the Finkelstein-Schafer(FS) statistical method. Based on the typical solar radiation data obtained, the geographical difference of solar energy resource of these 2 stations was also analyzed. It is expected that the presented typical data for major cities, which has the highest solar energy potential in South Korea, will be useful to the designers of solar energy conversion and utilization devices.
FS 통계 분석을 이용한 서울, 부산의 표준 건구온도 산정
유호천(Yoo Ho-chun),이관호(Lee Gwan-ho),박소희(Park So-hee),김경률(Kim Kyoung-ryul) 한국건축친환경설비학회 2007 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
The paper discusses methods of selecting typical weather data and describes the generation of typical dry bulb temperature years (TRYs; Test reference years) for Seoul and Busan, in South Korea. The typical dry bulb temperature were selected using the Finkelstein-Schafer(FS) statistic, from 20 years of meteorological data recorded during the period 1981-2000. and It compared the daily average weather data and typical dry bulb temperature average data. The result which it compares, it has the shape where the relationship of two data is similar. Also it got the result which is interrelation. So the FS statistical method draws up Test reference year usefully, will be used.
유호천(Yoo Ho-Chun),노경환(Noh Kyoung-Hwan) 한국태양에너지학회 2009 한국태양에너지학회 학술대회논문집 Vol.2009 No.11월
In express bus which has no window, the air quality inside the bus is very critical for the passengers who staying for an extended time. Air conditioning system using natural energy is expected to significantly improve the air quality while the bus runs the suburban area. But the express buses today usually attempt to ventilate using air conditioning system, rather than natural ventilation. In this study, analysis of existing ventilation opening and the new ventilation system on roof, using computer simulation. As a result, two cases using existing ventilation device was found to be effective for partial ventilation only, while the air in front remains standstill. The new system proved to have promoted more dynamic ventilation in most of space.
유호천(Yoo Ho-Chun),이선동(Lee Seon-Dong) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
The eyes of the world have been on the climate change, and numerous problems resulting from climate change have caused the eco-system and industries to suffer the huge damage and loss. Should such climate change be able to be predicted, a basic data to deal with the potential problems as well as to develop the preventive measure could possibly be provided. This study, in an attempt to identify the variance tendency of hourly solar irradiance in Incheon, Seoul and Busan, was intended to break down the dry-bulb temperature recorded during 1986 to 2005 for 20 years with hourly data for the purpose of comparison and analysis. As a result of comparing and analyzing them after setting the hourly solar irradiance for 20 years as the base year meterological data, Busan recorded the highest value, which was followed by Seoul and then Incheon. Viewing the variance of solar irradiance, irrespective of the location, the highest value was recorded in May, while it declines during June to August due to increasing rain and cloud cover.
대한민국 40년간의 기온변동추이와 표준기상데이터 비교분석
유호천(Yoo Ho-Chun),강현구(Kang Hyun-Gu) 한국건축친환경설비학회 2010 한국건축친환경설비학회 논문집 Vol.4 No.2
Extreme weather events and the contamination of global environments caused by global warming are becoming severe. A lot of computer simulations for use in evaluating the function of building energy to reduce energy consumption in a building are being developed and supplied. It is essential to use standard meteorological data of each region for the evaluation of building energy using such computer simulations. This study analyzed the temperature trend over the 40 years (1996-2005) since the nation began the weather forecast and conducted comparative analysi.s on some kinds of standard meterological data currently being used. As for the nation's climatic change over the 40 years, its average temperature had risen about 1.7 , and the number of cooling degree days had increased about 25 while that of heating degree days had decreased about 40. As a result of analyzing the 4 kinds of standard meteorological data currently being used, it was confirmed that there is a difference between the value of meteorological data for DOE being used unofficially and the other 3 values, and the remaining 2 data which was prepared based on Korea Meteorological Administration showed a value similar to that of standard meteorological data provided by Korea Solar Energy Society. It is pointed out as a problem that the meteorological data for DOE, the unofficial data currently being used, showed a distribution of temperatures lower than other meteorological data and the ommission of the amount of solar radiation.
유호천(Yoo Ho-Chun),이관호(Lee Kwan-Ho),강현구(Kang Hyun-Gu) 한국태양에너지학회 2009 한국태양에너지학회 논문집 Vol.29 No.6
The research on meteorological data in Korea has been carried out but without much consistency and has been limited to some areas only. Of relatively more importance has been the area in the utilization of the solar energy, however, the measurement of the global solar horizontal irradiation has been quite limited. In the current study, the actually measured value of the global solar horizontal irradiation from the meteorological data and the theoretically calculated value of the global solar horizontal irradiation from the cloud amount will be analyzed comparatively. The method of analysis will employ the standard meteorological data drafted by the Korean Solar Energy Society, the standard meteorological data from the presently used simulation program and the corresponding results have been compared with the calculated value of the global solar horizontal irradiation from the cloud amount. The results of comparing the values obtained from MBE(Mean Bias Error), RMSE(Root Mean Squares for Error), t-Statistic methods and those from each of the standard meteorological data show that the actually measured value of the meteorological data which have been converted into standard meteorological data with the help of the ISO TRY method give the monthly average value of the global solar horizontal irradiation. These values compared with the monthly average value from the IWEC from the Department. of Energy of the USA show that the value of the global solar horizontal irradiation in the USA is quite similar. In the case of the values obtained from calculation from the cloud amount, the weather data provided by TRNSYS, except only slight difference, which means that the actually measured values of the global solar horizontal irradiation are significant This goes to show that in the case of Korea, the value of the global solar horizontal irradiation provided by the Korea Meteorological Administration is will be deemed correct.