By Tadeusz Kudra
Presents Drying Breakthroughs for an Array of Materials
Despite being one of many oldest, so much energy-intensive unit operations, business drying is likely to be the least scrutinized approach on the microscopic point. but within the wake of today’s international strength concern, drying study and improvement is at the upward thrust.
Following within the footsteps of the generally learn first variation, Advanced Drying applied sciences, moment Edition is the direct final result of the new out of the ordinary development in drying literature and new drying undefined. This variation presents an evaluative assessment of latest and rising drying applied sciences, whereas putting higher emphasis on making the drying procedure extra strength effective within the green age.
Draws at the Authors’ 60+ Years of mixed Experience
Fueled via the present power situation and turning out to be client call for for enhanced caliber items, this completely up-to-date source addresses state of the art drying applied sciences for varied fabrics comparable to high-valued, heat-sensitive prescribed drugs, nutraceuticals, and a few meals. It additionally introduces cutting edge strategies, akin to heat-pump drying of meals, which permit either business perform and examine and improvement initiatives to save lots of power, lessen carbon footprints, and hence increase the base line.
Four New Chapters:
- Fry Drying
- Refractance Window Drying
- Mechanical Thermal Expression
Requiring no earlier wisdom of chemical engineering, this single-source reference may still help researchers in turning the laboratory curiosities of at the present time into the innovative novel drying applied sciences of tomorrow.
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Extra info for Advanced drying technologies
Mechanical effect of inert particles due to wall-to-bed and particleto-particle impact, and attrition due to circulation of the bed. ). Thermal effect due to convective and contact heat transfer that depends mainly on heat transfer rate, bed hydrodynamics, properties of drying material, and dryer configuration. The effect of material accumulation, which depends on rheological properties of the material being dried and bed loading, and therefore it can be important only for some materials. 5) where ∆ HT , ∆ M , and ∆ A are the heat transfer, mechanical, and accumulation effects, respectively.
Most of the developments in this field have occurred in the last three or four decades. As the general standard of living around the world rises along with the population of the world, it is obvious that the need for drying technologies will increase. New demands will be made on better energy efficiency, lower environmental impact via legislative measures, utilization of renewable energy for drying, better-quality products at lower total costs. Currently the major driving force for innovative drying techniques is the need to produce better-quality products at higher throughputs.
1998) report on fluid bed temperatures lower by 15°C than the temperature of the outlet air. 1) where R ϭ 462 J/(kgK) is the gas constant for water vapor, P s and P g are the water vapor pressure at the material surface and in the gas core, respectively, and ϕ is the parameter that quantifies distribution of the wet coat on the surface of inert particles given by the mass of wet material that adheres to the unit surface area of inert particles. 2) To calculate drying time, one should first identify the variation of the water vapor pressure at the material surface with the average temperature of inert particles and material moisture content.