2012 HQfood

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High quality food drying

Particular work is focusing on quality aspect of food drying at medium scale along with the collaboration of INNOTECH company(http://www.innotech-ing.de/). Problems of air distribution and pressure drop exist when drying is conducted even at medium scale. These parameters directly influence the food quality by uneven temperature distribution. No matter what method one use, drying of food requires two things: consistent heat and uniform air circulation. Both are tricky but not impossible to achieve. Many researchers made different air flow arrangements in different dryers but these are not effective when drying large mass of food due to uneven temperature distribution and pressure drop. To enhance the quality, the designing of appropriate air flow arrangement is undertaken to build up a dryer which will be capable to handle variety of food items in controlled drying conditions.


Batch drying of potato slices: kinetic changes of color and shrinkage in response of uniformly distributed drying temperature. Agric Eng Int: CIGR Journal, Volume 17, Issue 3 (2015), Pages, 296-308. Waseem Amjad, Oliver Hensel, Anjum Munir.

Thermodynamic analysis of drying process in a diagonal-batch dryer developed for batch uniformity using potato slices - Journal of Food Engineering
Volume 169, January 2016, Pages 238-249 Waseem Amjad, Oliver Hensel, Anjum Munir, Albert Esper, Barbara Sturm.

Spatial homogeneity of drying in a batch type food dryer with diagonal air flow design   -   Journal of Food Engineering, Volume 144, January 2015, Pages 148-155 Waseem Amjad, Anjum Munir, Albert Esper, Oliver Hensel

Design, development and experimental results of a solar distillery for the essential oils extraction from medicinal and aromatic plants   -   Solar Energy, Volume 108, October 2014, Pages 548-559 Anjum Munir, Oliver Hensel, Wolfgang Scheffler, Heike Hoedt, Waseem Amjad, Abdul Ghafoor

responsible : Dr. Wasseem Amjad

Doctoral Thesis   27-Jul-2016 :

Design and development of a diagonal-airflow batch dryer for spatial drying homogeneity