Experimental study and numerical modeling for drying grapes under solar greenhouse

Ilhem Hamdi, Sami Kooli, Aymen Elkhadraoui, Zaineb Azaizia, Fadhel Abdelhamid and Amenallah Guizani

Renewable Energy, 2018, vol. 127, issue C, 936-946

Abstract: Renewable energy, in particular solar energy, is becoming world widely spread. Solar energy is a non-polluting viable and economical source used in several fields such as drying. This work presents a combined numerical and experimental study of grape drying in a mixed mode using a solar greenhouse dryer. The experimental set up consists mainly of a solar air collector and a chapel-shaped greenhouse. The experiments were carried out in two steps. First, the solar collector was tested to study its performance before being coupled to the greenhouse. Second, the system was used to perform drying experiments. The variation of the product moisture content and the principal drying parameters were analyzed. The collector efficiency with a flow rate equal to 0.05 kg/s changed between 29.63% and 88.52% for the drying days. The moisture content of grape was reduced to 0.22 (g water/g dry matter) from its initial moisture content of 5.5 (g water/g dry matter) in 128 h.

Keywords: Grape; Solar greenhouse mixed dryer; TRNSYS simulation (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:127:y:2018:i:c:p:936-946

DOI: 10.1016/j.renene.2018.05.027

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