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金斗千 陸軍士官學校 1976 한국군사학논집 Vol.16 No.-
In the literature different values are found for the optimum tilt angle of a solar collector as a function of latitude only. In this study the criterion for optimizing the collector tilt is formulated more rigidly and the best tilt was obtained as a function of latitude, weather data and energy demand pattern. For small installation the optimum tilt is equal to the latitude as the previous rules. However, for lager scale installation the variation of output with tilt should always be studied under the well-defined objective function. A general method for doing this is introduced and sample calculation is carried out for Seoul region.
김두천,최진희,원영수,Kim, D.C.,Choi, J.H.,Won, Y.S. 대한설비공학회 1989 설비공학 논문집 Vol.1 No.3
The ASHRAE Simplified Energy Analysis Procedure using the Modified Bin Method(SEAP) is compared with the hourly calculation program, HASP/ACLD. The HASP/ACLD model office building with VAV system in Seoul is used as the basis for comparison. And the parameters considered are glass to wall area ratio and internal heat gains. The results show that SEAP predictions of annual energy use agree with HASP/ACLD predictions within 5% deviation. But there is a large difference in cooling and heating energy as glass to wall area ratio is varied. The SEAP cooling energy is 65-85% and the heating energy is 104-160% of the HASP/ACLD results. This is probably due to the solar heat gain data. the data related to the SEAP must be developed prior to use it.
간역열부하계산용(簡易熱負荷計算用) Bin기상(氣象)데이터
김두천,최진희,Kim, Doo Chun,Choi, Jin Hee 대한설비공학회 1988 설비저널 Vol.17 No.1
The purpose of this research is to produce bin weather data for Seoul from Standard Weather Data. The intended use of these data is for input to recently developed models for simplified energy calculations and for generating variable-base degree-day information. The data produced under this study include $3^{\circ}C$ bin data covering the full range of dry-bulb temperatures with mean coincident wet-bulb and daytime coincident solar radiation, wet-bulb bins down to freezing temperature, wind speed bins with prevailing directions, and heating and cooling degree hours to nine different temperature bases. All of these data are tabulated in six separate time periods and total daily categories for monthly and annual periods.
김두천,서진석,Kim, D.C.,Seo, J.S. 대한설비공학회 1992 설비공학 논문집 Vol.4 No.4
A simplified TAC method was developed for the selection of solar atmospheric transmittance data fundamental to the calculation of design solar radiation for the peak cooling load calculation using ETD method. The summer and autumn solar atmospheric transmittance data of the 11 major cities in Korea were obtained. Based on the simplified TAC method, the atmospheric transmittance data were selected by the TAC 2.5% of July instead of the TAC 2.5% of June through September for summer and the TAC 5.0% of October instead of the TAC 2.5% of October and November for autumn. Results show that the atmospheric transmittance data at solar noon were in the range of 0.61-0.66 for summer and 0.78-0.82 for autumn except for Pusan and Incheon.
김두천,Kim, Doo-Chun 대한설비공학회 1984 설비저널 Vol.13 No.4
이 자료는 건물의 연간 에너지소요량의 산정을 위한 동적열부하계산용 전산프로그램의 입력자료인 서울의 평균년 기상데이터로서, 한국과학재단 연구보고서인 "서울지방의 표준기상데이터에 관한 연구"로 부터 발췌한 것이다.
김두천,김정희,Kim Doo Chun,Kim Jung Hee 대한설비공학회 1987 설비저널 Vol.16 No.4
Accurate solar radiation data are fundamental to the design of HVAC systems and solar driven devices. Unfortunately, the total radiation data on a horizontal surface has been only reported by meteorological office. Consequently, there is interest in development of model to estimate the solar radiation data. Based on the statistically estimated TAC data which were obtained from measured hourly values collected over a period of ten years at Seoul, the solar radiation model was determined. Atmospheric transmittance for this model was presented in the form of polynominal.