{"id":1148,"date":"2023-05-10T12:05:55","date_gmt":"2023-05-10T09:05:55","guid":{"rendered":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=1148"},"modified":"2023-05-10T12:05:55","modified_gmt":"2023-05-10T09:05:55","slug":"discussion-of-a-masters-thesis-in-the-department-of-mechanical-engineering-2","status":"publish","type":"post","link":"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=1148","title":{"rendered":"Discussion of a master&#8217;s thesis in the Department of Mechanical Engineering"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><strong>\u00a0\u00a0 It was conducted on Wednesday, 3\/5\/2023, in hall of Dr. Munther Al-Droubi the discussion of the master&#8217;s thesis of the student Yousif Fateh Midhat, which is tagged:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n<p><strong>&#8220;Thermo-hydraulic Performance Analysis of a Tubular<\/strong> <strong>Solar Air Heater<\/strong><a name=\"_Toc125224147\"><\/a><a name=\"_Toc124331548\"><\/a> <strong>with and without PCM<\/strong><strong> as thermal energy storage&#8221;.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>\u00a0 The discussion committee consisted of names listed below:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><strong>\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>Prof. Dr. Dhamyaa Saad Khudur \u2013 University of Mustansiriyah \/ College of Engineering \/ Department of Mechanical Engineering \u2013 Chairman.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>Asst. Prof. Dr. Luma Fadhil Ali &#8211; University of Baghdad \/ College of Engineering \/ Department of Mechanical Engineering \u2013 Member.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>Lec. Dr. Issam Hasan Alaameri &#8211; University of Baghdad \/ Presidency of Baghdad University \u2013 Member.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>Asst.Prof. Dr. Issam M. Ali Aljubury &#8211; University of Baghdad\/ College of Engineering\/ Department of Mechanical Engineering &#8211; Supervisor<\/strong><strong>. <\/strong><\/p>\n<p><strong>\u00a0The thesis was summarized as follows:<\/strong><\/p>\n<p><strong>\u00a0\u00a0\u00a0\u00a0 <\/strong><strong>The present study investigates the thermo hydraulic performance of a new designed solar air heater (SAH), with and without employing phase change material (PCM), as an attempt to achieve higher thermal efficiency in comparison with the conventional SAH of the flat absorber, and extend its longer operational time. Three SAHs have been designed and tested in Baghdad, Iraq. These heaters were conventional SAH with a flat plate absorber (FPSAH), jacketed-tubes absorber solar air heater (JTSAH), and jacketed-tubes absorber of jackets filled with a PCM (JTSAH\/PCM). Outdoor tests were conducted in three clear days from November 27<sup>th<\/sup>, 2021 to December 30<sup>th<\/sup>, 2021, and carried out from 8 AM to the end of operating time when air temperature difference becomes neglected. Each SAH was tested in three air flow rates, 0.011, 0.033, and 0.055 kg\/s. Extra thermal power during day hours can be stored in the PCM to be used after sunset. The JTSAH\/PCM gave additional operational time after sunset for 4 hours, 2.5 hours, and one hour at <\/strong><strong>0.011, 0.033, and 0.055 kg\/s<\/strong><strong> flow rates<\/strong> <strong>respectively. Experimental results showed that the JTSAH gave a temperature difference higher than the FPSAH at any air flow rate and any time. The maximum temperature difference obtained was 35 <\/strong><strong>\u00b0C <\/strong><strong>at the FPSAH, <\/strong><strong>39.7 \u00b0C <\/strong><strong>at the JTSAH, and 32 <\/strong><strong>\u00b0C at the JTSAH\/PCM <\/strong><strong>at 0.011 kg\/s. It was observed that the maximum daily thermal efficiency obtained by <\/strong><strong>JTSAH\/PCM<\/strong><strong> (78%), compared with the <\/strong><strong>JTSAH (75%), and<\/strong><strong> FPSAH (55 %) at 0.055 kg\/s. Also, the JTSAH\/PCM showed a daily exergy efficiency of 2.8%, higher than the FPSAH and the JTSAH by 1.6 %, and 0.6 %, respectively, at 0.011 kg\/s. The JTSAH\/PCM saves about 1652 $\/year, with an increment by 52 $\/year, and 476 $\/year higher than the JTSAH, and FPSAH, respectively, at 0.055 kg\/s.<\/strong><\/p>\n<p><strong>\u00a0\u00a0 After scientific discussions by the discussion committee members on the contents of the thesis in-depth and expressing their observations, directives, and defense by the student, the thesis was accepted and the student was awarded the M.SC in mechanical engineering sciences with a grade of <\/strong><strong>excellent<\/strong><strong>.\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n<p><strong>\u00a0\u00a0\u00a0 On this occasion, we thank the student Youssef Fateh Medhat for his outstanding efforts throughout the study period, wishing him continued success. We also thank the supervisor and members of the discussion committee for their diligent and distinguished effort, in a manner appropriate to presenting the thesis in the best way and in accordance with the scientific level presented<\/strong><strong>.<\/strong><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1149\" src=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-300x225.jpg 300w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-1024x768.jpg 1024w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-768x576.jpg 768w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-1536x1152.jpg 1536w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2-600x450.jpg 600w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/11111-2.jpg 1600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1150\" src=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-300x132.jpg\" alt=\"\" width=\"300\" height=\"132\" srcset=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-300x132.jpg 300w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-1024x449.jpg 1024w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-768x337.jpg 768w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-1536x674.jpg 1536w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1-600x263.jpg 600w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/22222-1.jpg 1600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1151\" src=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1-300x166.jpg\" alt=\"\" width=\"300\" height=\"166\" srcset=\"https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1-300x166.jpg 300w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1-1024x565.jpg 1024w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1-768x424.jpg 768w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1-600x331.jpg 600w, https:\/\/en.coeng.uobaghdad.edu.iq\/wp-content\/uploads\/sites\/69\/2023\/05\/44444-1.jpg 1305w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\u00a0<\/strong><\/p>\n<p><strong>\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u00a0\u00a0 It was conducted on Wednesday, 3\/5\/2023, in hall of Dr. Munther Al-Droubi the discussion of the master&#8217;s thesis &#8230; <a class=\"cz_readmore\" href=\"https:\/\/en.coeng.uobaghdad.edu.iq\/?p=1148\"><i class=\"fa fa-angle-left\" aria-hidden=\"true\"><\/i><span>\u0627\u0644\u0645\u0632\u064a\u062f<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":1152,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[7,4,36,31],"tags":[],"class_list":["post-1148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-constant-links","category-important-links","category-mechanical-engineering","category-thesis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - 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