Development of Compound Parabolic Concentrator based on Flat Plate Receiver Solar Air Heater and Phase Change Material. NTU-JRE [Internet]. 2024 Jan. 23 [cited 2024 Jul. 3];6(1):1-9. Available from: https://journals.ntu.edu.iq/index.php/NTU-JRE/article/view/642