Parabolic solar dish concentrator with sphere receiver is less studied. Wepresent an analytic function to calculate the intercept factor of the systemwith real sun bright distribution and Gaussian distribution, the resultsindicate that the intercept factor is related to the rim angle of reflector andthe ratio of open angle of receiver at the top of reflector to optical errorwhen the optical error is larger than or equal to 5 mrad, but is related to therim angle, open angle and optical error in less than 5 mrad optical error.Furthermore we propose a quick process to optimize the system to provide themaximum solar energy to net heat efficiency for different optical error undertypical condition. The results indicate that the parabolic solar dishconcentrator with sphere receiver has rather high solar energy to net heatefficiency which is 20% more than solar trough and tower system includinghigher cosine factor and lower heat loss of the receiver.
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