✍ Scribed by Donald Rapp; A.A.J. Hoffman
No coin nor oath required. For personal study only.
An examination of normal incidence solar intensity t NISI) data taken at Fort Hood, Texas, from September 1974 through November 1975 has shown repetitive patterns for intensities in clear weather. A correlation is developed which predicts the NISI at any hour of any day of the year in clear weather with a high degree of accuracy. A study of N1SI during cloudy weather has yielded a correlation for J.~, the fraction of clear day NISL as a function of cloud cover and visibility. The result is a semi-empirical model which provides a unique prediction of the NISI at all times for all weather conditions. Using this model, it should be possible to convert long-term data on cloud cover and visibility to long-term NISI patterns.
Insolation Solar intensity Climate
📜 SIMILAR VOLUMES
The design of systems for utilization of solar energy as an alternate energy source necessitates reasonable estimates of the expected insolation in any region of interest. Climatological data on sky cover and visibility are routinely available in most areas, but good insolation data are not. From a
A new procedure is developed for estimating availability of solar energy in localities where adequate data are not available. The hourly variations in solar intensity with day of the year during clear weather (essentially no clouds and unlimited visibility) are shown to follow regular repeatable pat
Proper design and sizing of a solar energy heating and/or cooling system involves an assessment of the local availability of solar energy and its relationship to local climate. A study is made of availability of solar energy at Fort Hood, Texas for the period 1961 1969. Hourly values of climatologi