집광형 태양열 집열기의 순간효율측정 및 일일효율산출에 관한 연구 = The measurement of instantaneous efficiency & calculation of all-day Efficiency of the concentrating solar collector

다국어 초록 (Multilingual Abstract)

This study includes the measurement of instantaneously thermal efficiency of the concentrating solar collector with 2-axes type solar tracker which was developed lately by domestic solar collector maker. Because it has very low heat loss coefficient, it is useful for high operating temperature and low ambinent temperature..
Also this study includes the calculation of it's a11-day efficiency compared with flat plate type solar collector using the variables of operating temperature and clearance ratio when it is used for space heating. During the calculation, the meteorological data are used in accordance with houly mean data in Korea and specially direct radiation data are predicted according to monthly extraterristrial ratio data.
We found that the concentrating solar collector have high performence in winter season which low ambinent temperature and relatively high clearence ratio.