Assessing the performance of the evacuated tube solar collector using smart curtain through (PSO based PID) controller and Nano fluids

This research revealed control on Nano fluid temperature in the evacuated tube solar collector system, where fluids used ETSC as working to increase heating system thermal efficiency. Smart curtain was shadow and of or cooling condition which is moved by stepper motor programmed move through Arduino board using an artificial intelligence method such (PSO based PID) controller . Where curtain's main idea polarization sun's radiation, work refers parameters: first parameter second sun radiation falling collector, one output defined (distance parameter).