Mechanical engineering department at the university of technology grants MSC to the student Mariam Abdul-Ameer for her thesis ((The performance of a solar collector built on a small channel)). The thesis includes a practical and theoretical study that has been employed to verify the thermal performance of the design of a solar collector based on curvilinear miniature channels in the applications of mini-channel heat exchangers. It is essential that the design tools be accurate heat transferring and low pressure.The disccusion committee was chared by Prof.Dr.Waheed Shatte, and the membership of Asst.Prof.Dr.Najim ABD Jasim from michanical engineering department-University of Baghdad and Lect.Dr.Ali Dawood. Asst.Prof.Dr.Zainab Hasoon and Lect.Dr.Mohammed Fawzi as supervisors.