PEMODELAN PENGERINGAN SLAB CABAI SECARA FLUIDISASI

Bregas Siswahyono Tatag Sembodo, Fadilah Fadilah

Abstract

It is the advantage of fluidized drying that the heat and mass transfer rate between solid and gas phase are relatively higher than other methods. The objectives of this research were to find fluidized driying curve of chili slabs, effective diffusivity coefficient (De), mass transfer coefficient of water (ky) and mathematical model of fluidized drying of chili slabs. It was also to find any influential factors of De and ky through dimensionless number analysis. The experiment was performed by flowing the hot air through chili slabs in the fluidized glass column, which was equipped with blower, thermometer and flowmeter. The rate of drying air was varied in order to obtain its effects. The results showed that the drying curve consisted of two sections, constant and falling rate. The increase of drying air rate from 942.14 to 1087.08 cm3 /s had no effect significantly on drying rate. Comparing the mathematical model with the data indicated that it was fitting each other.

Full Text:

PDF

References

Abid, M., Gilbert ,R and Laguerie, C., (1990), ”An Experimental and Theoretical Analysis of The Mechanism of Heat and Mass Transfer During The Drying of Corn Grains in a Fluidized Bed “, Int. Chem.Eng., 30 (4), pp. 632-642.

Desresier, N.W., (1988), “Teknologi Pengawetan Pangan”, terjemahan oleh Maljohardjo, M., 3 ed., hal. 207-209, Penerbit Universitas Indonesia, Jakarta.

Dutta, S.K., Nema, V.K., and Bhardwaj, R.K., (1988), “Drying Behaviour of SphericalGrains”, I. J. Heat and Mass Transfer ,31 ,p. 855-861

Reyes, A., Alvarez, P,I., and Marquadt, F.H., (2002), “Drying of Carrots in a Fluidized Bed: I. Effects of Drying Conditions and Modelling”, Drying Technology, 20, pp. 1463-1483.

Srinivasakannan, C. and Balasubramaniam, N., (2002), “A Simplified Approach to The Drying of Solids in a Batch Fluidised Bed”, Braz. J. Chem. Eng., 19, pp. 293-298.

Treybal, R.E., (1985), “Mass-Transfer Operations” ,3 ed., pp. 655-716, McGrawHill International Book Company, Tokyo.

DOI: https://doi.org/10.20961/ekuilibrium.v7i2.49513

Refbacks

  • There are currently no refbacks.