Design and fabrication of parabolic trough solar collector for thermal energy applications
Other Title(s)
تصميم و تصنيع مجمع شمسي حوضي ذو القطع المكافئ لتطبيقات الطاقة الحرارية
Dissertant
Thesis advisor
Chiad, Baha Tumah
Qasim, Nusayr Karim
Comitee Members
al-Wattar, Abbas Jasim Hammadi
Abd Allah, Manal M.
al-Haddad, Rad M. S.
Iltaif, Abd al-Husayn Khudayr
al-Hamdani, Ali Hadi Abd al-Munim
University
University of Baghdad
Faculty
College of Science
Department
Department of Physics
University Country
Iraq
Degree
Ph.D.
Degree Date
2011
English Abstract
This work presents the design, construction and investigation of experimental study of a Parabolic Trough Solar Collector (PTSC).
It is a construction of a matrix of mirrors to form the parabolic reflector (1.8 2.8 m).
They are aligned by a laser beam.
Solar tracker has been constructed (using two-axis) to track PTSC according to the direction of solar radiation.
Synthetic oil is used as a heat transfer medium because of its capability to have load of high temperature (400 oC).
The storage tank has been fabricated of stainless steel of size 50 liter with two loads: the first load is designed as a solar cooker and the second one for space heating.
Three types of experimental tests have been achieved using non-coated metallic, coated metallic and evacuated glass receiver.
The experimental tests have been carried out in Baghdad with climatic conditions (33.3o N, 44.4o E) during selected days of the months of October, November and December.
The performance of PTSC is evaluated by using outdoor experimental measurements including the useful heat gain, the thermal instantaneous efficiency and the energy gained by the storage tank fluid.
The value of each of these parameters is observed to be maximum, whenever evacuation is used.
The storage tank fluid temperature is increased from 30 oC at 9:30 am to be 135 oC at 13:30 pm without drawing-off heat transfer fluid (HTF), when the maximum HTF outlet temperature from evacuated receiver was 150 oC in typical December days.
The heat loss coefficient of the evacuated receiver has been found 7.5 W/oCm2, while the heat loss coefficients were 18.3 W/oCm2 and 20.6 W/oCm2 for non-coated and coated metallic receivers, respectively, and the most heat losses occur through storage tank.
The average thermal efficiency for the collector is approximately 61% when evacuated receiver is used.
The heat losses which occurred at high temperatures which, decreased the average thermal efficiencies to 51% and 40%, are respectively the selectively coated and non-coated metallic receivers.
It was also found that the obtained characteristic curve of the tested collector is considerably higher than that of a typical collector which can be attributed to the lower thermal losses of the evacuated glass envelope.
Generally, the performance results of this collector which is fairly acceptable, considering that it is the first attempt to fabricate such collector locally and evaluated in Iraq environment.
The final results establish the technical feasibility of using PTSC for applications requiring thermal energy at temperatures up to 150 oC for solar irradiance about 400- 500 W/m2
Main Subjects
No. of Pages
101
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Theoretical part.
Chapter Two : Experimental part.
Chapter Three : Results and discussion.
References.
American Psychological Association (APA)
Mutlak, Falah Abd al-Hasan. (2011). Design and fabrication of parabolic trough solar collector for thermal energy applications. (Doctoral dissertations Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-608187
Modern Language Association (MLA)
Mutlak, Falah Abd al-Hasan. Design and fabrication of parabolic trough solar collector for thermal energy applications. (Doctoral dissertations Theses and Dissertations Master). University of Baghdad. (2011).
https://search.emarefa.net/detail/BIM-608187
American Medical Association (AMA)
Mutlak, Falah Abd al-Hasan. (2011). Design and fabrication of parabolic trough solar collector for thermal energy applications. (Doctoral dissertations Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-608187
Language
English
Data Type
Arab Theses
Record ID
BIM-608187
