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Anotace knihy

A hybrid solar dryer was designed and constructed using direct solar energy and a heat exchanger. The drying chamber was located directly under the solar collector. The dryer was operated during normal sunny days as a solar dryer, and during cloudy day as a hybrid solar dryer. Drying was also used at night with stored heat energy in water which was collected during the time of sun-shine and with electric heaters located at water tank. The efficiency of the solar dryer was raised by recycling about 65% of the drying air in the solar dryer and exhausting a small amount of it outside the dryer. Under Mid-European summer conditions it can raise up the air temperature between 30 to 40°C above the ambient temperature. The solar dryer was tested for drying of ripe banana slices. The capacity of the dryer was to dry about 30 kg of banana slices in 8 hours in sunny day from an initial moisture content of 82% to the final moisture content of 18% (wb). In the same time it reduced to only 62% (wb) moisture content in open sun drying method. The colour, aroma and texture of the solar dried products were better than the sun drying products.

Parametry knihy

Zařazení knihy Knihy v angličtině Technology, engineering, agriculture Agriculture & farming

• Plný název: Hybrid Solar Drying System
• Podnázev: New Hybrid Solar Dryer connected with a Heat Storage Unit to save Energy, reduce Time and dry Agricultural Products with a High Quality
• Autor: Baher Amer
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 184
• EAN: 9783639302714
• ISBN: 3639302710
• ID: 06837260
• Nakladatelství: VDM Verlag
• Hmotnost: 277 g
• Rozměry: 229 × 152 × 11 mm
• Datum vydání: 20. October 2010

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