%0 Journal Article %1 Vignola.McDaniels1989 %A Vignola, F. %A McDaniels, D. K. %D 1989 %J Solar Energy %K atmospheric direct factor, model, radiation, ratio surface tilted weighting %N 3 %P 183--190 %T Direct Radiation: Ratio Between horizontal and Tilted Surfaces %V 43 %X The ratio between direct radiation on a tilted surface and direct radiation on a horizontal surface is examined on a daily and monthly average basis. This direct ratio factor, often called Rb, is shown to vary with beam intensity. The atmospheric weighting model, presented in a previous paper, is shown to accurately estimate the direct ratio factor. A comparison is made between Rs calculated from hourly beam data from the Pacific Northwest, and R predicted using the atmospheric weighting model and other direct ratio models.

@article{Vignola.McDaniels1989, abstract = {The ratio between direct radiation on a tilted surface and direct radiation on a horizontal surface is examined on a daily and monthly average basis. This direct ratio factor, often called Rb, is shown to vary with beam intensity. The atmospheric weighting model, presented in a previous paper, is shown to accurately estimate the direct ratio factor. A comparison is made between Rs calculated from hourly beam data from the Pacific Northwest, and R predicted using the atmospheric weighting model and other direct ratio models.}, added-at = {2011-09-01T13:26:03.000+0200}, author = {Vignola, F. and McDaniels, D. K.}, biburl = {https://www.bibsonomy.org/bibtex/2f643c43d5c8455d9df34c83718ae9021/procomun}, file = {Vignola.McDaniels1989.pdf:Vignola.McDaniels1989.pdf:PDF}, interhash = {dddd106880c7e7f1034d292d20b515ae}, intrahash = {f643c43d5c8455d9df34c83718ae9021}, journal = {Solar Energy}, keywords = {atmospheric direct factor, model, radiation, ratio surface tilted weighting}, number = 3, owner = {oscar}, pages = {183--190}, refid = {Vignola.McDaniels1989}, timestamp = {2011-09-02T08:25:25.000+0200}, title = {Direct Radiation: Ratio Between horizontal and Tilted Surfaces}, volume = 43, year = 1989 }