RAYTRACING OPTICAL ANALYSIS OF A SOLAR FUNNEL COOKER€¦ · RAYTRACING OPTICAL ANALYSIS OF A SOLAR...
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RAYTRACING OPTICAL ANALYSIS OF A SOLAR FUNNEL COOKER
Carrillo-Andrés1, A., Rodríguez-García, E. 1, Apaolaza-Pagoaga, X. 1,
Ruivo, C. 2, Cejudo-López, J.M. 1
1 University of Málaga 2 University of Algarve
Third International Conference CONSOLFOOD2020
Advances in Solar Thermal Food Processing
22-23-24 January 2020
INSTITUTE OF ENGINEERING; UNIVERSITY OF ALGARVE; CAMPUS DA PENHA; FARO-PORTUGAL
CONSOLFOOD2020
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Optical Analysis of a Funnel Solar Cooker using Raytracing
CONSOLFOOD2020
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NREL Soltrace model of the funnel solar cooker
CONSOLFOOD2020
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NREL Soltrace model input data
CONSOLFOOD2020
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NREL Soltrace Ray-tracing of the funnel solar cooker
CONSOLFOOD2020
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Sun elevation and sun azimuth angles relative to the cooker
CONSOLFOOD2020
Sun elevation angle relative to the bisector
- +
Sun azimuth angle relative to the bisector
- +
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Optical efficiency with perfect optics, perfect geometry
CONSOLFOOD2020
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Optical efficiency with non perfect optics, perfect geometry
CONSOLFOOD2020
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CONSOLFOOD2020
Optical efficiency with non perfect optics and specular errors
104 mrad (6 deg)
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Effect of the specular errors on the optical efficiency
CONSOLFOOD2020
104 mrad (6 deg) 0 mrad (0 deg)
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Simple check on the cooking power at delta temp = 0 C
CONSOLFOOD2020
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Conclusions and perspectives
CONSOLFOOD2020
Optical efficiency is around 35% at peak The ‘sweet spot‘ is quite wide and located about 10 deg below the bisector angle of the funnel Specular errors do not reduce much the efficiency The raytracing results are compatible with the results from experimental testing Raytracing models support the understanding of experimental results Future work: transparent lid, elevation of the receiver, summer configuration of the cooker, other cookers, optimization of the reflector …