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Abstract ▼ AI-Helper

Square slices of sea tangle was dried in hot air drier that could be controlled air temperature, relative humidity and air velocity. Under various drying conditions, drying and shrinking characteristics were investigated. 1) During drying sea, tangle, the constant rate period was nonexistant and the...

Square slices of sea tangle was dried in hot air drier that could be controlled air temperature, relative humidity and air velocity. Under various drying conditions, drying and shrinking characteristics were investigated. 1) During drying sea, tangle, the constant rate period was nonexistant and the falling rate could be devided into a 2 periods, namely, a first falling rate period and a second falling rate period. 2) The tip part was proceeded more shrinkage than base part, and under drying condition of air temperature $50^{\circ}C$, relative humidity $30\%$, air velocity 0.4m/s, when the moisture content was reduced to $20\%$, the shrinking ratio of tip part, middle part and base part were 57.5, 54.0 and $42.7\%$, respectively. 3) The drying shrinking and drying rate increased with decreasing relative humidity, but when the moisture content was reduced to $20\%$, the shrinking ratio increased with increasing relative humidity.