THE IMPACT OF HEAT STORAGE MATERIAL INTEGRATION IN AN EVACUATED TUBE COLLECTOR: Original scientific paper. Chem. Ind. Chem. Eng. Q. [Internet]. 2025 Dec. 10 [cited 2025 Dec. 16];32(2):99-109. Available from: https://www.ache-pub.org.rs/index.php/CICEQ/article/view/1501