The final thesis defense at Kerbala University took place at the College of Engineering. Mr. Mohammad A. Salatan, an MS student, presented his thesis in front of an audience under the supervision of both Asst. Prof. Dr. Mohammad H. Abbod and Dr. Mohammad H. Ahmed.

The thesis defense committee is composed of the following individuals:

1. Prof. Dr. Ahssan Y. Hussein, professor at University of Baghdad (Committee chief).

2. Asst. Prof. Dr. Auday H. Kadham, lecturer at Technical College in Mussiab (Committee member).

3. Asst. Prof. Dr. Farhan L. Rasheed, lecturer at University of Kerbala (Committee member).

The goal of this research is to use ponds as a heat sink to absorb solar energy. The core principle is around the usage of nanoparticles (PCM) such as KCL and NACL, which are poured into the pond. This can improve the ability to store heat for a longer period of time. Reflective plates were installed on the pond’s side walls to maximize the quantity of heat received. The Solar Position Navigator was also connected to these plates. The effects of different concentrations of PCM, 11, 16, and 26%, on the thermal performance were investigated. For validation purposes, experimental data are obtained and compared to other existing counterparts. The findings revealed that the highest concentration has the greatest impact on performance. In addition, mirrored surfaces have a significant impact on improved results. Finally, as the water flow rate is reduced, the thermal gain increases.