IDS96 10th INTERNATIONAL
DRYING SYMPOSIUM
30 July - 2 August 1996, Krak¨®w, Poland

IDS'96 Proceedings Contents
Preface iii
VOLUME A
Section I.
Keynote Lectures
1
Innovation in drying
A.S. Mujumdar
3
Combined impingement and through air drying of paper
W.J.M. Douglas, G. Chen
14
Modeling of strain-stress behavior for advanced drying
M. Hasatani, Y. Itaya
27
Flowsheet simulation and the use of CFD simulations in drying technology
T.A.G. Langrish
40
Deposit-free spray drying: dream or reality?
K. Masters
52
Environmental and safety issues in drying
M.A. Roques
61
Thermomechanical dewatering
E.-U. Schlünder
73
Section II.
Fundamentals of Drying
83
Wetting and drying process in fluidized bed granulation: consequences on particle growth mechanism R.-D. Becher, E.-U. Schlünder 85
Analysis of heat and mass transfer in drying processes of polymer solution using high-intensity infrared radiation
J.J. Chen, J.D. Lin
93
Universal drying curve
W. Ciesielczyk
103
Parameter estimation of Fick's law drying equation
W.R.W. Daud, M.H. Ibrahim, M.Z.M. Talib
111
Temperature and moisture distribution within materials undergoing shrinkage during drying
M.N.A. Hawlader, J.C. Ho, Zhang Qing
120
Steam drying of porous spheres; experiments and modelling J. Hager, R. Wimmerstedt 129
Presentation of drying kinetics in a fluidized bed by means of radial basis functions W. Kaminski, J. Stawczyk, E. Tomczak 137
A new apparatus to determine the drying behaviour of particulate solids at low moisture contents
A.M. Keech, R.B. Keey, I.C. Kemp
145
Drying induced stresses and their control
S.J. Kowalski, A. Rybicki
151
Drying behaviour of deformable porous media: a mechanistic approach to clay drying
B. Kroes, W.J. Coumans, P.J.A.M. Kerkhof
159
Approximate solutions of diffusion equation with non-zero and time dependent boundary concentration
T. Liu, W.J. Coumans
167
Fixed bed vacuum desorption of a multicomponent moisture in the vacuum drying
J.F. Nastaj
175
A complete coupled model of the combined microwave and convective drying of softwood in an oversized waveguide
P. Perr? I.W. Turner
183
Convective heat and mass transfer and evolution of the moisture distribution in combined convention and radio frequency drying
A. Poulin, M. Dostie, P. Proulx, J. Kendall
195
The new ways of defining heat and mass transfer coefficients during drying process
M. Stefanovic, V. Turanjanin, J. Vodnik, M. Stakic, M. Urosevic
205
Selective drying of porous material containing a two phase moisture
M. Steinbeck, E.-U. Schlünder
213
Moist air drying potential in convective drying processes
D. Voronjec, D. Antonijevic
221
A dynamic method for determination of desorption isotherms
E. Mitura
229
Section III.
Modelling and Simulation of Drying
233
Moisture diffusion in gelatin slabs by modeling drying kinetics
C. Bonazzi, A. Ripoche
235
A model for drying sheet materials
P. Chen
243
Simulation and scale-up of pneumatic conveying and cascading rotary dryers
I.C. Kemp, D.E. Oakley
250
Using computational fluid dynamics to model product quality in spray drying: air flow, temperature and humidity patterns
F.G. Kieviet, P.J.A.M. Kerkhof
259
Modelling of mechanical properties of dried materials
S.J. Kowalski, G. Musielak
267
Modelling gas-solid flow in a pneumatic-flash dryer
Z. Mindziul, A. Kmiec
275
Parameter estimation in cross-flow sliding bed drying
O.C. Motta Lima, J.C. Pinto, G. Massarani
283
A model for the flow of air and coarse particles in cyclones
M.A. Cremasco, R. Maciel Filho, S.A. Nebra
291
An equivalent thermal simile for freeze drying description and modelling
J.I. Lombrana, C. de Elvira, J. Izkara
300
Simulation of drying suspensions in a conical spouted bed
I.M. Oliveira, M.L. Passos
307
A new model for fluid bed drying
H. Groenewold, E. Tsotsas
315
Modelling of drum drying using neutral network and polynomial model
B. Heyd, G. Rodriguez, J. Vasseur
323
Drying of white sugar in a fluid bed: simulation and design of industrial scale dryers-coolers Z. Pakowski, J. Grochowski 331
Pseudo two-dimensional model for a pneumatic dryer
S.C.S. Rocha, A.E.A. Paixão
340
Drying of biomass particles in fixed and moving beds
J. Saastamoinen, R. Impola
349
Numerical simulation of drying in a cyclone
M.A. Silva, S.A. Nebra
357
Experimental evaluation of a spray dryer dynamic model
I. Solar, R. Pérez, V. Morales
365
Analysis and simulation of an industrial flash dryer in a Thai manioc starch plant
W. Tanthapanichakoon, C. Srivotanai
373
Modeling and optimization of the pneumatic rotary high temperature dryer inner structure
R.M. Topic, B.M. Vasiljevic
381
Section IV.
Drying Equipment and Technology
389
Some aspects of waste slugdes drying in a fluid bed dryer
J. Adamiec
391
Investigation of drying a multistage dryer with a vibrofluidized bed
I. Borde, M. Dukhovny, T. Elperin, V. Katz
398
Performance and improvements in heat pump dryers
O. Alves-Filho, I. Strømmen
405
Hydrodynamic characteristics of a spouted bed dryer with a draft tube
T. Bartoszewicz, A. Kmiec, W. Ludwig
417
Pneumatic suspension drying
R. Blasco, G. Díaz, A. Reyes
427
Metal-oxide sludge drying in a spouted bed
M.A. Boizán, P.S. Chan, C.J. Lim, C.M.H. Brereton, N. Epstein
435
Research on double tube flash dryer for drying spent grain.
C.W. Cao, D.W. Liu, Z.E. Zhou
441
The application of thin-film evaporator for getting solid products from liquid solutions
J. Dziak, A. Skoczylas
447
A heat pump assisted closed-loop tunnel dryer
M.N.A. Hawlader, S.K. Chou, K.J. Chua
455
Comparison of various types of industrial dryers: design and operation
C.T. Kiranoudis, Z.B. Maroulis, D. Marinos-Kouris, G.D. Saravacos
463
Fluidized bed spray granulation and film coating. A new method for the investigation of the coating process on a single sphere
K.Ch. Link, E.-U. Schlünder
470
Development of instantaneous vacuum drying and jet milling system
Y. Maekawa, T. Yokoyama, M. Yoshikawa
481
Energy saving in industrial drying plants by partial recovery of the latent heat of the exhaust air
C.S. Moraitis, C.B. Akritidis
489
Impact of energy supply on properties of drops of alumina gel during drying process
F. Mercier, F. Kolenda, J.R. Puiggali, M.A. Roques
497
Analysis of evaporation rate in the spouted bed zones during drying of liquid materials using a three region model
W.P. Oliveira, J.T. Freire
504
Air pumping by rotary atomizers in spray dryers
D.E. Oakley, R.B. Keey
513
Leidenfrost phenomenon for impinging droplets at low pressures
Y.K. Pan, T. Li, Z.Y. Li, T. Kudra
521
Effects of product drying rate and ambient condition on the operating modes of heat pump dryer
S. Prasertsan, P. Saen-Saby, G. Prateepchaikul, P. Ngamsritrakul
529
Wall to bed heat transfer coefficient in a two-dimensional continuous spouted bed dryer
B. Ranganna, S.A. Sotocinal, G.S.V. Raghavan, T. Kudra
535
Microencapsulation by spray drying: influence of wall systems on the retention of the volatile compounds
M.I. R? Y.J. Liu
541
Development of biogas burner accessory system for solar drying
P.T. Paliniswamy,T. Pandiarajan, R. Viswanathan
550
Flow visualisation and instantaneous velocity measurements of spray dryer gas and spray flows using particle image velocimetry R.A. Stafford, O. Fauroux, D.H. Glass 555
Performance tests of a new 2-stage counter-current heat pump fluidized bed dryer
I. Strømmen, O. Jonassen
563
The analysis of swirl-impact dryer hydrodynamics
C. Strumillo, P. Kuts, I. Zbicinski
569
Convective heat transfer during coating of particles in two-dimensional spouted beds
O.P. Taranto, S.C.S. Rocha, G.S.V. Raghavan
577
Construction of a modular solar dryer
I Farkas, I. Seres, B. Ball?
585
Large pressurized fluid bed steam dryers
A.S. Jensen
591
Heat and mass transfer for drying of common salt in a vibrofluid bed
Z.Y. Li, Y.K. Pan
598
Experimental study of slurries drying on inert particles in spouted bed and fluidized bed dryers
A. Reyes, G. Díaz, R. Blasco
605
Design and development of a rotary heating equipment for sand in a particulate medium dryer
S.A. Sotocinal, G.S.V. Raghavan
613
Research on pulsofluidized bed drying
X.Y. Wang, C.W. Cao
621
A novel rotary dryer with through air combination
Y. Yamato
627
Application of pulse combustion to drying process
I. Zbicinski, J. Grad, C. Strumillo, I. Smucerowicz
631
Commercial fluidized bed paddy dryer
S. Soponronnarit, S. Prachayawarakorn, M. Wangji
638
Section V.
Drying of Wood
645
Evolution of air pressure in wood during the drying process in an evacuated kiln
P. Audebert, D. Zeddam, C. Basilico
647
Steam drying of wood chips in pneumatic conveying dryers
C. Fyhr, A. Rasmuson
655
Timber drying: trends in energy consumption and equipment utilisation within the UK timber industry
S. Jay, T. Oliver
663
The influence of the drying medium on high temperature convective drying of single wood chips
A. Johansson, A. Rasmuson
671
Moisture content profiles in sapwood boards on drying
G. Chen, R.B. Keey, J.C.F. Walker
679
Dependence of swelling of wood upon the drying history
B. Kolin, G. Danon, D. Ranisavljev
688
Heat and mass transfer in the drying of wood
M.E. de Paiva Souza, S.A. Nebra
695
Analysis and optimisation of fast timber drying processes through the use of computer simulations
M. Riepen, W. Gard
703
Mass transfer from wooden surfaces
J.-G. Salin
711
A study of heat and mass transfer during high temperature softwood drying using a comprehensive transport model
G.W. Slade
719
Capillary pressure: some static and dynamic views in semi-ordered media and their applicability to wood drying
G.W. Slade
727
Some remarks on vacuum drying kinetics
J. Swigon
734



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