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The oretical and experimental eprformabce of compound parabolic concentrators / Mohamed Hossam Mohamed Shehata Eldakamawy ; Supervised Abdalla Sayed Ahmed Hanafi , Mahmoud Abdelwahab Kassem

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Mohamed Hossam Mohamed Eldakamawy , 2015Description: 121 P. : charts , facsimiles ; 30cmOther title:
  • الأداء النظرى و العملى لمجمعات القطع المكافئ المركب [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering Summary: The compound parabolic concentrators (CPC) are promising low concentration non imaging solar collectors, with intermediate indicative working temperature range (60 - 300 {u00B0}C), that can operate monthly, seasonally or annually without the need of continuous tracking. They show competitive performance with flat plate collectors when used in applications of temperatures slightly above the ambient. Likely, the CPC collectors have lower cost and smaller pumping power consumption. Thereby, the present work presents a rigorous study of the optical, geometrical and thermal characteristics of CPCs with bare tubular absorbers. This investigation covered also the effect of truncation, number of frequent tilt adjustments and usage of heat transfer enhancement (HTE) techniques like twisted tape insertion on the performance of CPC. In all cases, the CPCs are oriented as usual in an East-West direction and facing south. Moreover, a CPC test rig was set up at the Faculty of Engineering campus, Cairo University, which helped to validate the transient model and gave a clear indication for the CPC performance under Egypt{u2019}s environmental working conditions. The designed CPC performed well as a solar water heater with a measured efficiency of around 46.7% during winter
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2015.Mo.O (Browse shelf(Opens below)) Not for loan 01010110066666000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2015.Mo.O (Browse shelf(Opens below)) 66666.CD Not for loan 01020110066666000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering

The compound parabolic concentrators (CPC) are promising low concentration non imaging solar collectors, with intermediate indicative working temperature range (60 - 300 {u00B0}C), that can operate monthly, seasonally or annually without the need of continuous tracking. They show competitive performance with flat plate collectors when used in applications of temperatures slightly above the ambient. Likely, the CPC collectors have lower cost and smaller pumping power consumption. Thereby, the present work presents a rigorous study of the optical, geometrical and thermal characteristics of CPCs with bare tubular absorbers. This investigation covered also the effect of truncation, number of frequent tilt adjustments and usage of heat transfer enhancement (HTE) techniques like twisted tape insertion on the performance of CPC. In all cases, the CPCs are oriented as usual in an East-West direction and facing south. Moreover, a CPC test rig was set up at the Faculty of Engineering campus, Cairo University, which helped to validate the transient model and gave a clear indication for the CPC performance under Egypt{u2019}s environmental working conditions. The designed CPC performed well as a solar water heater with a measured efficiency of around 46.7% during winter

Issued also as CD

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