Energy Consumption of a Pilot-Scale Spray Dryer

Autor: B. H. Al-Busairi, C. G. J. Baker, H. E. Al-Mansour
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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