Performance evaluation of a nonimaging secondary reflector on a commercial parabolic trough concentrator

Hdl Handle:
http://hdl.handle.net/11285/622537
Title:
Performance evaluation of a nonimaging secondary reflector on a commercial parabolic trough concentrator
Issue Date:
2017-05-16
Abstract:

Parabolic trough concentrators are a proven technology in the field of solar power.  Solar radiation is reflected by a linear parabolic mirror and concentrated onto the surface of an absorber tube with the purpose of increasing the thermal energy of a fluid that flows within for commercial, industrial or residential applications.  The minimum diameter of an absorber tube relies exclusively from the light cone originating from the parabola, which is why, reducing its diameter increases the total average radiation.  The use of secondary reflectors are a viable way to increase the total radiation concentration at the absorber tube without sacrificing collection efficiency.  The performance of multiple tailored seagull-type secondary reflectors were evaluated under several conditions.  A Matlab script to design the various secondary reflectors was created to generate different secondary reflector designs.  The various secondary reflectors were evaluated by the simulation program SolTrace.  Compared to a simple absorber tube, the absorber tube with a secondary reflector experienced average radiation intensity over 600% of the original oversized absorber while only suffering an absorbed power loss of below 5%.  Under the scenario that included a glass tube surrounding the absorber and the secondary reflector size being limited as well by the glass tube,  the absorber experienced concentration increases from approximately 460% up to 600% and losses of approximately 10%.  The results show that the seagull-type secondary reflector can be implemented to improve performance of parabolic trough concentrators.

Keywords:
Solar; Thermosolar; Parabolic Trough; Solar Concentrator
Degree Program:
Maestria en Ingenieria Energetica
Advisors:
Carlos Iván Rivera Solorio
Committee Member / Sinodal:
José Luis López Salinas; Miguel Ángel Gijón Rivera
Degree Level:
Maestro de Ciencias
School:
Escuela de Ciencia e Ingenieria
Campus Program:
Campus Monterrey
Discipline:
Ingeniería y Ciencias Aplicadas / Engineering & Applied Sciences
Appears in Collections:
Ciencias Exactas

Full metadata record

DC FieldValue Language
dc.contributor.advisorCarlos Iván Rivera Solorioen
dc.creatorCos Garza, Salvador delen
dc.date.accessioned2017-05-19T22:07:39Z-
dc.date.available2017-05-19T22:07:39Z-
dc.date.issued2017-05-16-
dc.identifier.urihttp://hdl.handle.net/11285/622537-
dc.description.abstract<p>Parabolic trough concentrators are a proven technology in the field of solar power.&nbsp; Solar radiation is reflected by a linear parabolic mirror and concentrated onto the surface of an absorber tube with the purpose of increasing the thermal energy of a fluid that flows within for commercial, industrial or residential applications.&nbsp; The minimum diameter of an absorber tube relies exclusively from the light cone originating from the parabola, which is why, reducing its diameter increases the total average radiation.&nbsp; The use of secondary reflectors are a viable way to increase the total radiation concentration at the absorber tube without sacrificing collection efficiency.&nbsp; The performance of multiple tailored seagull-type secondary reflectors were evaluated under several conditions.&nbsp; A Matlab script to design the various secondary reflectors was created to generate different secondary reflector designs.&nbsp; The various secondary reflectors were evaluated by the simulation program SolTrace.&nbsp; Compared to a simple absorber tube, the absorber tube with a secondary reflector experienced average radiation intensity over 600% of the original oversized absorber while only suffering an absorbed power loss of below 5%.&nbsp; Under the scenario that included a glass tube surrounding the absorber and the secondary reflector size being limited as well by the glass tube,&nbsp; the absorber experienced concentration increases from approximately 460% up to 600% and losses of approximately 10%.&nbsp; The results show that the seagull-type secondary reflector can be implemented to improve performance of parabolic trough concentrators.</p>en
dc.language.isoengen
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/*
dc.titlePerformance evaluation of a nonimaging secondary reflector on a commercial parabolic trough concentratoren
dc.typeTesis de Maestríaes
thesis.degree.grantorInstituto Tecnológico y de Estudios Superiores de Monterreyes
thesis.degree.levelMaestro de Cienciasen
dc.contributor.committeememberJosé Luis López Salinasen
dc.contributor.committeememberMiguel Ángel Gijón Riveraen
thesis.degree.disciplineEscuela de Ciencia e Ingenieriaen
thesis.degree.nameMaestria en Ingenieria Energeticaen
dc.subject.keywordSolaren
dc.subject.keywordThermosolaren
dc.subject.keywordParabolic Troughen
dc.subject.keywordSolar Concentratoren
thesis.degree.programCampus Monterreyen
dc.subject.disciplineIngeniería y Ciencias Aplicadas / Engineering & Applied Sciencesen
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