Dehumidification drying of high-moisture rough rice in a radial-flow, circular bin

Abstract

An experimental radial-flow, circular bin dryer with a dehumidifier was fabricated and tested for rough rice drying. Results showed that high-moisture paddy could be dried to 14% moisture content (wet basis) over a 24 h drying span at an average drying rate of 0.5%/h. The open-cycle system's specific moisture extraction rate and the dehumidifier's coefficient of performance were within the usual range of values cited for similar conventional systems or equipment. The quality of the dehumidifier-dried and naturally dried paddy was similar with respect to minimum grain fissuring. The system was found to be a technically feasible, more energy-efficient and safer alternative to electrical resistance heating in the conditioning of ambient air for drying under humid tropical conditions.

Source or Periodical Title

Drying Technology

ISSN

7373937

Page

2307-2326

Document Type

Article

Subject

Dehumidification, Dryer performance, Fissured grains, Low-temperature drying, Resistance heating, Rough rice

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