Comparison of Methods for Estimating Daily and Hourly Diffus
2012年02月28 00:00:00 来源：中国空调制冷网
Daily and hourly diffuse radiations measured using a pyranometer and shading ring have been compared with the values calculated using several correlations. For the daily diffuse radiation, the correlation of Duffie &Beckman, Liu & Jordan, Erbs et al., and Bruno have been used while the hourly diffuse radiation was calculated using the correlations of Hottel, Orgill & Holland and Liu & Jordan. It has been uniformly observed that Liu & Jordan’s method may be considered a suitable method for the estimation of daily and hourly diffuse radiations in clear-sky conditions in the plain areas of northern India.
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