Energy Consumption of a Pilot-Scale Spray Dryer
Autor: | B. H. Al-Busairi, C. G. J. Baker, H. E. Al-Mansour |
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Rok vydání: | 2011 |
Předmět: | |
Zdroj: | Drying Technology. 29:1901-1910 |
ISSN: | 1532-2300 0737-3937 |
DOI: | 10.1080/07373937.2011.595563 |
Popis: | Factors affecting the energy consumption of a pilot-scale spray dryer have been studied. The feedstock employed was instant coffee solution (50–150 gl−1). Its feed rate ranged from 0.83 to 1.9 mls−1 and the inlet air temperature from 473–533 K. The specific energy consumption E s (3,000–5,500 kJkg−1) decreased with increasing feed rate and temperature difference across the dryer and increased with solids concentration. Values of E s obtained were consistent with Baker and McKenzie's[ 10 ] adiabatic dryer model. The thermal loss factor η decreased with increasing evaporation rate. Attempts to correlate product moisture content with the operating variables met with limited success. |
Databáze: | OpenAIRE |
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