REFFERENCES 
Allen, T. Particle Size Measurement Volume 2: Powder Sampling and Particle Size 
Measurement. Dordrecht: Kluwer Academic Publishers, 1996 
Amrein, D. L. "Tips for selecting highly efficient cyclones." Chemical Engineering, 
102(5)., 1995 
Banerjee, B. Tea production and Processing, New Delhi: Oxford and IBH 
Publications Co. (pvt) Ltd., 1993. 
Cocker, A. C. "Understand Cyclone Design" Chemical Engineering Progress, 1993, 
89(12), pp.51-55. 
Coulson, J. M., Richardson, J. F. Chemical Engineering, Volume 2: Unit Operations, 
New York: Pergamon Press, 1991. 
Coulson, J. M., Richardson, J. F., Sinnot, R. K. Chemical Engineering, Volume 6: An 
Introduction to Chemical Engineering Design, New York: Pergamon Press, 1985. 
Davis, H. Visual Basic 6, Berkeley: Peachpit press, 2000. 
Fayed, M. E., Otten, L; Handbook of Powder Science and Technology, New York: 
Van Nostrand Reinhold Company Inc., 1984. 
Hoffmann, A. C , de Groot, M., Hospers, A. "The Effect of the Dust Collection 
System on the Flowpattern and Separation Efficiency of a Gas Cyclone." The 
Canadian journal of Chemical Engineering, Vol. 74, Aug 1996, pp. 464-470. 
Hoffmann, A. C , de Jonge, R., Arends, H., Hanrats, C. "Evidence of the 'Natural 
Vortex Length' and its Effect on the Separation Efficiency of Gas Cyclones." 
Filtration & Separation, September, 1995, pp.799-804. 
Kang, S., Kim, J., Kang, S. "Discussino on the Grade - Efficiency Curves 
Experimentally Obtained in the Air - Cyclone and the Fibrous Filter." Advanced in 
Filtration andSeparation.\995, Vol. 9, pp. 250-254. 
Kirthisena, D. The Application of Fluidized bed Technology to the drying of Tea, Sri 
Lanka: Tea Research Institute of Sri Lanka, St. Coombs, Thalawakelle, Sri Lanka, 
1973. 
Lapple, C. E. Processes use many collector types, Chemical Engineering, 58, ppl44-
151. 
Leith, D., Licht, W. A.I.Ch E. Symposium Scr. 68:196, 1972. 
Leith, D., Mehta, D. "Cyclone Performance and Design." Atmospheric Environment; 
1973, vol.7, pp. 527-549. 
Miller, I., Freund, J. E Probability and Statistics for Engineers. Prentice-Hall, New 
Jersey, 1965 
Molerus, O., Gluckler, M. "Development of a cyclone separation with new design." 
Powder Technology,^, 1996, pp. 37-40. 
Mycock, J. C , Mckenna, J. D., Theodore, L. Handbook of Air Polution Control 
Engineering and Technology. CRC Press Inc., 1995. 
Onkto, J. S. "Cyclone separator scaling revisited." Powder Technology, 87, 1996, pp. 
Onkto, J. S. "Multivariate Fractional Efficiency." Aerosol Science and 
Technology, 31, 1999, pp. 194-197. 
Overcamp, T. J., Mantha, S. V. "A Simple Method for Estimating Cyclone 
Efficiency." Environmental Progress, 1998, Vol. 17, No.2, pp.77-79. 
Overcamp, T. J., Scrlett, S. E. "Effect of Reynolds Number on the Stokes Number of 
Cyclones." Aerosol Science and Technology, 19, 1993, pp. 362-370. 
Perr'y, H. Perry's Chemical Engineering Handbook, 6 l h Edition, New York: 
McGraw-Hill Inc., 1984. 
Siler, B., Spotts, J. Using Visual Basic 6, Indianapolis: Que, 1998. 
Smith, J. E., Jordan, M. L. "Mathematical and Graphical Interpretation of the Log-
Normal Law for Particle Size Distribution Analysis." Journal of Colloid Science, 19, 
1964, pp. 549-559. 
Sproull, W. T. (1970) Air Pollution and Its Control, Exposition Press, New York. 
Strauss, W. Industrial Gas Cleaning.Oxford: Pergamon Press, 1975. 
Wright, P. Biginning Visual Basic 6, Olton: Wrox press, 1998. 
Yoshida, H. "Three-dimensional simulatio of air cyclone and particle separation by a 
revised-type cyclone." Collides and Surfaces, 109, 1996, pp. 1-12. 
"Analysette 22 COMPACT" Laser Particle Sizer, Operating Instructions. Idar-
Oberstein: Fritsch GmbH, 1998. 
The Tea Research Center of Sri Lanka. Handbook on Tea, Sri Lanka: Research 
Institute of Sri Lanka, St. Coombs, Thalawakelle, Sri Lanka, 1986. 
World Health Organization. Hazard Prevention and Control in the Work 
Environment: Airborne Dust, WH0/SDE/0EH/99.14, World Health Organization, 
Geneva, Switzerland, 1999. 
93-104.