ACOUSTIC DRYING OF GREEN RICE
作者:
H.S. Muralidhara,
D. Ensminger,
期刊:
Drying Technology
(Taylor Available online 1986)
卷期:
Volume 4,
issue 1
页码: 137-143
ISSN:0737-3937
年代: 1986
DOI:10.1080/07373938608916315
出版商: Taylor & Francis Group
关键词: Acoustic drying;energy;sonic whistles;surface diffusion
数据来源: Taylor
摘要:
The effects of acoustic drying of rice in a fluidized bed were evaluated at frequencies of 12 kHz and 19 kHz and air temperatures of 20.5° C and 40° C. The intensity levels were 132 and 128 dB respectively, intensities that are considerably lower than the 145 dB and higher usually applied in drying experiments of this type. The results confirmed that the effectiveness of acoustic drying is more pronounced at the lower temperatures, a significant fact especially in drying heat sensitive materials. The rate of water removal increased when acoustical energy at either frequency was applied with room temperature air. Increase in drying rate was not obvious when acoustic energy was applied at 40° C at the intensity levels of these experiments.
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