An Analysis of the Influence of Geography and Weather on Parabolic Trough Solar Collector Design

The potential performance of single-axis tracking parabolic trough solar collectors as a function of optical energy distribution and receiver size has been calculated for 11 sites using typical meteorological year input data. A simulation based on the SOLTES code was developed which includes the three-dimensional features of a parabolic trough and calculates the thermooptical tradeoffs. The capability of the thermo-optical model has been confirmed by the comparison of calculated results with the experimental results from an all-day test of a parabolic trough. The results from this 11 site analysis indicate a potential performance superiority of a north-south horizontal axis trough and, in addition, a high quality (optical error, σ_system≤0.007-radian) collector should be of the same geometric design for all of the sites investigated and probably for all regions of the country.