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Multi-Purpose Dryer Pilot Plant

[+] Author Affiliations
Louis Onwulri Chinedu

Kaji and Company Nigeria Ltd.

Paper No. IMECE2005-79559, pp. 577-587; 11 pages
doi:10.1115/IMECE2005-79559
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Part A
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4221-5 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

In engineering design and construction, a mathematical model with which the process parameters can be studied is of extreme utility. A reliable model will often present or minimize costly mistakes in prototype development and be utilized for the process air variable (Air flow rate, drying air temperature, drying air humidity), product variables (product throughput and size distribution), dimensional variables (width, length, height of drying, number of passes, dryer configuration can be controlled. While ambient air conditions, aerodynamic properties of the drying material, exposed surface area of the product, drying rate characteristics and equilibrium moisture contents are specific and cannot be controlled. This report incorporates the design work of, and for the construction of a multi-purpose dryer. Economic consideration lent a batch operating try dryer to the choice type. A choice feed of cassava chips (70% moisture content) to produce dried chips (1% moisture content for onward production of cassava flour is used. The drying is done adiabatically, employing heated air blown over the trays at a controlled dry bulb temperature of 110°C and wet–bulb temperature of 45 °C putting together available drying equations and simplification, a pilot plant producing 3.564kg of dried chips per batch time of 1.2936 hours (excluding loading and unloading time) is being designed under achievable operability. On and economic analysis, a pay–back time of 2.53 years is conceived. This report will be subdivided into choice of process route, process design, process economic and recommendation. It will incorporate also by useful tables, appendices and the design flow diagrams.

Copyright © 2005 by ASME

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