%0 Journal Article %1 Suehrcke.McCormick1989 %A Suehrcke, H. %A McCormick, P. G. %D 1989 %J Solar Energy %K curves daily insolation, integrated radiation, short-time solar utilizability %N 6 %P 339--345 %T Solar radiation utilizability %V 43 %X The nonlinear behaviour of many solar energy systems requires consideration of the fluctuating nature of solar radiation. Utilizability curves constructed for this purpose consider the radiation fluctuation on the basis of hourly or daily insolation values. Solar collectors, however, do not see radiation fluctuations in terms of hourly or daily insolation values, but respond to instantaneous radiation fluctuations caused by clouds. The fluctuation of instantaneous and short-time integrated radiation has been shown to differ significantly from that of daily insolation. This paper presents utilizability curves constructed from the cumulative probability distribution of instantaneous terrestrial insolation values. It is shown that hourly and daily utilizability curves give a conservative estimate of long-term performance. Experimental measurements of the collector performance further suggest the use of instantaneous utilizability curves in place of daily curves. The effect of the collector time constant on utilizability is discussed.

@article{Suehrcke.McCormick1989, abstract = {The nonlinear behaviour of many solar energy systems requires consideration of the fluctuating nature of solar radiation. Utilizability curves constructed for this purpose consider the radiation fluctuation on the basis of hourly or daily insolation values. Solar collectors, however, do not see radiation fluctuations in terms of hourly or daily insolation values, but respond to instantaneous radiation fluctuations caused by clouds. The fluctuation of instantaneous and short-time integrated radiation has been shown to differ significantly from that of daily insolation. This paper presents utilizability curves constructed from the cumulative probability distribution of instantaneous terrestrial insolation values. It is shown that hourly and daily utilizability curves give a conservative estimate of long-term performance. Experimental measurements of the collector performance further suggest the use of instantaneous utilizability curves in place of daily curves. The effect of the collector time constant on utilizability is discussed.}, added-at = {2011-09-01T13:26:03.000+0200}, author = {Suehrcke, H. and McCormick, P. G.}, biburl = {https://www.bibsonomy.org/bibtex/2bee16fd3f28de851c85675ba6192cae0/procomun}, file = {Suehrcke.McCormick1989.pdf:Suehrcke.McCormick1989.pdf:PDF}, interhash = {52848946f5e365329528ef8c672b0eee}, intrahash = {bee16fd3f28de851c85675ba6192cae0}, journal = {Solar Energy}, keywords = {curves daily insolation, integrated radiation, short-time solar utilizability}, number = 6, owner = {oscar}, pages = {339--345}, refid = {Suehrcke.McCormick1989}, timestamp = {2011-09-02T08:25:25.000+0200}, title = {Solar radiation utilizability}, volume = 43, year = 1989 }