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A parabolic collector through system was developed for solarelectricity generating application in the 200-3500C temperature range insolar fields up to hundreds megawatts range. The design of new supportstructure of the collector includes concept studies, wind tunnelmeasurements and result in a structure with a central framework element.This new torque box design will have tower weight and less deformationdesign of the collector structure then the other designs considered. Therefore, all the collector elements are connected on one drive,which result in reduced total number of drives interconnecting pipes, thusreducing the installation cost and thermal losses. The present design has ahigh system efficiencies (Improving the efficiency of solar ener;ycollector, Developing an optimum plant operating strategy, Suggest areafor future developments) the most important goals of this project. The heat-loss testing and optical efficiency testing were carried out tocreate a collector/receiver efficiency curve that estimates the heat gain tothe heat transfer fluid flowing within the receiver. For solution of theenergy equation, temperature of the receiver tube is taken as 350K andambient temperature is assumed to be 300K. Various recirculation andtemperature fields were absorbed around the receiver tube for differentflow conditions. Effect of collector orientation on the average Nu numberfor the receiver tube was found negligible when the winds speed is low( Re、4.5 X 105 based on the collector aperture). But when the wind velocityis high, the collector effect on the variation of Nu around the glass coverof the absorber tube is considerable.