LOW-COST SOLAR FOOD DRYER: DESIGNING, BUILDIND AND EVALUATING ITS APPLICABILITY

Favorite this paper
How to cite this paper?
Details
  • Presentation type: Pôster
  • Track: Process Engineering and Emerging Technologies (ET)
  • Keywords: Araticum pulps; Small producers; Sun drying;
  • 1 Universidade Estadual de Campinas
  • 2 Universidade de São Paulo
  • 3 Instituto Federal da Bahia

LOW-COST SOLAR FOOD DRYER: DESIGNING, BUILDIND AND EVALUATING ITS APPLICABILITY

Rafael Fernandes Almeida

Universidade Estadual de Campinas

Abstract

Solar energy is considered clean, as it does not release any waste into the atmosphere. Its use to replace electrical energy in the process of drying fruits in agro-industrial enterprises brings economic and environmental benefits. In terms of social inclusion, the use of solar energy allows greater participation of small producers in the industrial processing of fruits, which can also reduce post-harvest waste. This research aimed to design and build a solar dryer and evaluate its usability dehydrating araticum pulps (Annona crassiflora Mart.), while also evaluating the potential of the city of Barreiras, in western Bahia, Brazil, as a favorable region for sun drying. The equipment was built mainly with styrofoam box and aluminum foil, with a capacity of approximately 30 L, aiming to optimize the action of sunlight and protect the products from insects and bad weather. Araticum pulps were subjected to the drying process in the equipment, which was placed under sunlight from 10 am to 4 pm in Barreiras. Every 30 minutes, temperature and relative humidity of the chamber and the product weight were determined. The estimated cost of the dryer was BRL 99.41, 89 % or more less than cost of commercial dryers. During the drying process, the chamber was in average temperature of 58.62 °C and relative humidity of 37.35 %. 360 minutes of drying were enough to make the wet basis moisture content of the pulp change from 81.18 ± 2.44 % to 2.32 ± 0.28 %, which was the moisture equilibrium of the fruit. It was noted, therefore, taking araticum as an example of a product from the region, that the constructed dryer, associated with the climatic conditions of the municipality of Barreiras, represented an environmentally friendly equipment with potential to be used by small producers for drying agro-industrial products.

Questions (33 topics)

Share your ideas or questions with the authors!

Did you know that the greatest stimulus in scientific and cultural development is curiosity? Leave your questions or suggestions to the author!

Sign in to interact

Have a question or suggestion? Share your feedback with the authors!

Author

Rafael Fernandes Almeida

É uma boa ideia. Possuo outro trabalho na qual construí um secador solar de exposição indireta e sequei maçã na mesma cidade. Foi eficiente!! Anotado.

Author

Rafael Fernandes Almeida

Pensei nisso, mas como já está havendo publicações... Vamos ver. Obrigado!

Amanda Mellissa B Oliveira

Concordo com a ideia da patente. Sugiro que se informe a respeito, porque o seu trabalho é excelente!

Author

Rafael Fernandes Almeida

Realmente. Foi o tempo que tive para fazer, mas é uma boa sugestão!

Author

Rafael Fernandes Almeida

Estão dizendo isso. Vamos ver!

Author

Rafael Fernandes Almeida

I understand. I will remember this suggestion for an upcoming presentation. Thanks!

Author

Rafael Fernandes Almeida

Realmente. Ótima sugestào!!

Author

Rafael Fernandes Almeida

Ótima ideia