Parabolic-Trough/Flat-Plate Collector Performance Comparison

摘要

Surveys of industrial process energy requirements that may be met by the use of solar systems show that about one-third of all energy applications occur between 150 exp 0 F and 600 exp 0 F, and less than 3% occur below 150 exp 0 F. Performance comparisons have been made between flat-plate collectors of high quality and parabolic-trough collectors of current quality to identify the solar technology with the greatest potential for near-term impact over the temperature range that spans many process heat applications. The results indicate equal performance at temperatures as low as 110 exp 0 F. Since troughs are already functioning at 600 exp 0 F, the tentative conclusion is that parabolic troughs may reasonably be used for applications within the identified temperature range. (ERA citation 05:000550)