A Study of Linear Fresnel Solar Collector Reflector …
369
5 Conclusion
In this work, an effort is made to show the development of LFC for various process
applications. The experimental units of LFC projects are illustrated along with their
detailed geometrical specifications.
This paper has reviewed various kinds of reflector field configurations. Design
aspects such as filed orientation, location, numbers, width, focal length, and space
between reflectors are studied. The following effects over the collector performance
are concluded on the basis of the study.
With regard to field orientation, for high latitudes location, East–West orientation is preferable, whereas, for the low latitude location which is nearer to the
tropics, North–South orientation is favorable. East–West orientations permit the
installation of wider reflectors. For North–South-oriented solar field, reflectors with
variable width do not contribute to increasing efficiency, whereas it adds an extra
manufacturing cost.
Full optimization, i.e., optimization for the location, width, and focal length of
each reflector is required to improve efficiency. Partial optimization provides only
marginal efficiency gain.
Curved reflector shows higher performance than a flat reflector. The concentration
features are almost the same when reflectors of parabolic and cylindrical shapes are
taken into consideration for a similar reference. Higher concentrations are achieved if
slightly bent reflectors are aimed toward the absorber central line. Daily solar power
is improved by increasing the mounting height of the absorber. It also increases
by increasing the width of the receiver and adding more reflectors. Plant cost is
substantially affected by the gap between reflectors and elevated receiver height.
References
1. Siddharth S, Khan MK, Pathak M (2015) Performance enhancement of solar collectors—a
review. Renew Sustain Energy Rev 49:192–210
2. Pushkaraj D, Sonawane VK, Raja B (2017) An overview of concentrated solar energy and its
applications. Int J Ambient Energy 39:1–6
3. Kalogirou SA (2004) Solar thermal collectors and applications. Prog Energy Combust Sci
30:231–295
4. El Gharbi N, Derbal H, Bouaichaoui S, Said N (2011) A comparative study between parabolic
trough collector and linear Fresnel reflector technologies. Energy Procedia 6:565–572
5. Lovegrove K, Stein WS (2012) Concentrating solar power technology: principles, developments and applications. Woodhead Publishing. ISSN 2044-9364
6. Starke AR, Lemos LFL, Colle S, Reinaldo RF, Cardemil JM, Escobar R (2016) A methodology
for simulation and assessment of concentrated solar power plants. Therm Eng 15(1):33–40
7. Fuqiang W, Ziming C, Jianyu T, Yuan Y, Yong S, Linhua L (2017) Progress in concentrated
solar power technology with parabolic trough collector system: a comprehensive review. Renew
Energy Sustain Energy Rev 79:1314–1328
8. Liddell Power Station, https://www.nrel.gov/csp/solarpaces/project_detail.cfm/projec
tID=269. Last accessed 18 April 2020
369
5 Conclusion
In this work, an effort is made to show the development of LFC for various process
applications. The experimental units of LFC projects are illustrated along with their
detailed geometrical specifications.
This paper has reviewed various kinds of reflector field configurations. Design
aspects such as filed orientation, location, numbers, width, focal length, and space
between reflectors are studied. The following effects over the collector performance
are concluded on the basis of the study.
With regard to field orientation, for high latitudes location, East–West orientation is preferable, whereas, for the low latitude location which is nearer to the
tropics, North–South orientation is favorable. East–West orientations permit the
installation of wider reflectors. For North–South-oriented solar field, reflectors with
variable width do not contribute to increasing efficiency, whereas it adds an extra
manufacturing cost.
Full optimization, i.e., optimization for the location, width, and focal length of
each reflector is required to improve efficiency. Partial optimization provides only
marginal efficiency gain.
Curved reflector shows higher performance than a flat reflector. The concentration
features are almost the same when reflectors of parabolic and cylindrical shapes are
taken into consideration for a similar reference. Higher concentrations are achieved if
slightly bent reflectors are aimed toward the absorber central line. Daily solar power
is improved by increasing the mounting height of the absorber. It also increases
by increasing the width of the receiver and adding more reflectors. Plant cost is
substantially affected by the gap between reflectors and elevated receiver height.
References
1. Siddharth S, Khan MK, Pathak M (2015) Performance enhancement of solar collectors—a
review. Renew Sustain Energy Rev 49:192–210
2. Pushkaraj D, Sonawane VK, Raja B (2017) An overview of concentrated solar energy and its
applications. Int J Ambient Energy 39:1–6
3. Kalogirou SA (2004) Solar thermal collectors and applications. Prog Energy Combust Sci
30:231–295
4. El Gharbi N, Derbal H, Bouaichaoui S, Said N (2011) A comparative study between parabolic
trough collector and linear Fresnel reflector technologies. Energy Procedia 6:565–572
5. Lovegrove K, Stein WS (2012) Concentrating solar power technology: principles, developments and applications. Woodhead Publishing. ISSN 2044-9364
6. Starke AR, Lemos LFL, Colle S, Reinaldo RF, Cardemil JM, Escobar R (2016) A methodology
for simulation and assessment of concentrated solar power plants. Therm Eng 15(1):33–40
7. Fuqiang W, Ziming C, Jianyu T, Yuan Y, Yong S, Linhua L (2017) Progress in concentrated
solar power technology with parabolic trough collector system: a comprehensive review. Renew
Energy Sustain Energy Rev 79:1314–1328
8. Liddell Power Station, https://www.nrel.gov/csp/solarpaces/project_detail.cfm/projec
tID=269. Last accessed 18 April 2020