DIFFERENTIAL ANGSTROM MODEL FOR PREDICTING INSOLATION FROM HOURS OF SUNSHINE

被引:10
作者
YEBOAHAMANKWAH, D
AGYEMAN, K
机构
[1] Department of Physics, University of Papua New Guinea
关键词
Statistical Methods - Regression Analysis;
D O I
10.1016/0038-092X(90)90158-9
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The Ångstrom model for predicting insolation is limited in scope beacuse it gives equal weighting to sunshine hours recorded at any time of the day. The differential Ångstrom model presented in this paper removes this limitation and relates insolation, qj, in the jth hour to the sunshine duration, nj, of the same period by the equation: qj = aj + bj. By regression analysis of monthly data, the set of constants aj and bj for each hour of each month of the year can be determined. Thus, using the appropriate set of a and b regression coefficients, any sunshine data can be transformed to insolation. The sum of the equation over a day gives the daily insolation from which monthly means can be calculated. The method has been applied to the 1986 and 1988 sunshine data recorded at the University of Papua New Guinea to predict the observed insolation to within 3.5%. The differential Ångstrom method has applications in places which have much recorded data on hours of sunshine but have limited observed insolation data. © 1990.
引用
收藏
页码:371 / 377
页数:7
相关论文
共 27 条
[1]  
AHMAD QA, 1983, RENEW SOLAR ENERGY J, V5, P86
[2]  
[Anonymous], 1924, Q J ROY METEOR SOC, DOI DOI 10.1002/QJ.49705021008
[3]   A CORRELATION FOR ESTIMATION OF GLOBAL SOLAR-RADIATION [J].
BAHEL, V ;
BAKHSH, H ;
SRINIVASAN, R .
ENERGY, 1987, 12 (02) :131-135
[4]  
DELISLE JF, 1966, NEW ZEAL J SCI, V9, P992
[5]  
Garnier B., 1968, J APPL METEOROL, V7, P796, DOI 10.1175/1520-0450(1968)0072.0.CO
[6]  
2
[7]   THE EMPIRICAL RELATION BETWEEN SOLAR RADIATION AND HOURS OF SUNSHINE [J].
GLOVER, J ;
MCCULLOCH, JSG .
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 1958, 84 (360) :172-175
[9]   CALCULATION OF MONTHLY MEAN SOLAR-RADIATION FOR HORIZONTAL AND INCLINED SURFACES [J].
HAY, JE .
SOLAR ENERGY, 1979, 23 (04) :301-307
[10]  
HOUGHTON HG, 1954, J METEOROL, V11, P1, DOI 10.1175/1520-0469(1954)011<0001:OTAHBO>2.0.CO