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Pineapple drying using a new solar hybrid dryer

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dc.contributor.author Gudiño-Ayala, David
dc.contributor.author Calderón-Topete, Ángel
dc.date.accessioned 2017-09-20T21:11:08Z
dc.date.available 2017-09-20T21:11:08Z
dc.date.issued 2014
dc.identifier.citation Gudiño-Ayala, D.; Calderón-Topete, A. (2014). Pineapple drying using a new solar hybrid dryer. In Energy Procedia 57 ( 2014 ) 1642 – 1650, 2013 ISES Solar World Congress. Cancún, México: Elsevier Ltd. es
dc.identifier.isbn 9781634396820
dc.identifier.uri http://hdl.handle.net/11117/4962
dc.description This paper presents the results of an experimental pineapple (Ananas comosus L.) drying study in a new solar hybrid dryer. The dryer is a direct and integrated type, with a black mate pan which measures 1.675 x 0.61 x 0.055 m (1.02m2). It uses a copper helical tube that conducts hot water, at 80°C, generating extra heat for the drying process; the tube is located at the bottom of the black pan. A caliber 6, transparent vinyl film is used as a cover and the walls and base of the dryer are isolated by 0.0254 m thick fiberglass. It is inclined 23° south and uses pump to recirculate water. The variety of pineapple used was honey, 1/4 of grown age. Each slice was 0.005 m thick, resulting in a mass density of 2.83 kg/m2 in the drying trays area. To be able to have useful comparisons, drying tests were performed during winter and spring of 2013, using both the hybrid dryer and the traditional solar dryer. Results showed that when initial humidity between pineapples is quite similar (this being one of the most influential factors in changing efficiency, time and other important process variables), evaporation efficiencies are higher in the traditional process; such efficiencies ranging between 22.7% and 24.0%; while the efficiency of the hybrid dryer ranges between 9.3% and 14.0%. This is basically due to the increase of energy loss when using both sunlight and heated water. On the other hand, the time the process took to reach the humidity goal (24.0% humid base or 0.32 dry based) was much faster when using the hybrid dryer. This dryer ended the process in a range of 6.0 to 6.8 hours while the traditional solar process took between 8.0 and 8.8 hours. It is also important to note that the final process was basically homogeneous throughout the dryer, especially when the drying trays on the top end of the dryer were placed 0.03 m further away from the top, and produced a fine quality product with only slight discoloration of the pineapples’ side which faced the sun. homogeneous throughout the dryer, especially when the drying trays on the top end of the dryer were placed 0.03 m further away from the top, and produced a fine quality product with only slight discoloration of the pineapples’ side which faced the sun. es
dc.description.sponsorship ITESO, A.C. es
dc.language.iso eng es
dc.publisher Elsevier Ltd. es
dc.relation.ispartofseries ISES Solar World Congress;
dc.rights.uri http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf es
dc.subject Solar Hybrid Dryer es
dc.subject Direct Dryer es
dc.subject Integrated Dryer es
dc.subject Evaporation Efficience es
dc.subject LP Gas es
dc.title Pineapple drying using a new solar hybrid dryer es
dc.type info:eu-repo/semantics/conferencePaper es
rei.revisor ISES Solar World Congress
rei.peerreviewed Yes es


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