Design and performance evaluation of a solar-assisted biomass drying system with thermal storage

被引：45
|
作者：
Leon, M. Augustus [2 ]
Kumar, S. [1 ]
机构：
[1] Asian Inst Technol, Energy Field Study, Klongluang 12120, Pathumthani, Thailand
[2] Dalhousie Univ, Dept Mech Engn, Halifax, NS B3H 3J5, Canada
来源：
DRYING TECHNOLOGY | 2008年 / 26卷 / 07期
关键词：
air heating; biomass gasifier stove; chilli drying; hybrid drying system; unglazed solar collector;
D O I：
10.1080/07373930802142812
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A solar biomass hybrid air heating system that does not require a conventional auxiliary heater but can still provide a daily load fraction exceeding 90% and supply hot air at a steady temperature and flow rate continuously for 24h a day has been developed. The system, which combines an unglazed transpired solar collector, rock bed, and a biomass gasifier stove with heat exchanger, was evaluated by drying chilli using air at 60 degrees C and 90m3/h. The chilli was dried from 76.7% moisture (w.b.) to 8.4% over 32.5h of continuous drying. The dryer reduced the drying time by 66% compared to open sun drying and provided 91.6% load fraction during the 24-h operation. The temperature of hot air supplied was stable at 60 +/- 3 degrees C for about 21h during the entire drying duration.
引用
收藏
页码：936 / 947
页数：12
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