## Mathematical Modeling of Solar Drying of Tomato Slices

 dc.Degree M.Sc en_US dc.Faculty Agriculture en_US dc.contributor.advisor Mohamed Ayoub Ismail en_US dc.contributor.author Ali, Amel Ahmed El Mamoun Ayoub dc.contributor.faculty Agricultural Engineering en_US dc.date.accessioned 2015-06-14T08:44:29Z dc.date.available 2015-06-14T08:44:29Z dc.date.issued 2015-06-14 dc.date.submitted 2015-06-14 dc.description 137page dc.description.abstract Solar drying experiments in thin-layer of tomato slices were conducted at Shambat, Faculty of Agriculture, University of Khartoum. The study was conducted to develop a mathematical model for tomato slices solar drying. Then the mathematical model was written into Pascal programming language. An indirect forced convective solar dryer was constructed and used in the experiments. Air was forced into the solar air heater or collector by a suction fan and the resulting hot air was then passed to the drying chamber where the tomato slices were placed in a thin-layer. The change in mass of tomato slices and the drying air parameters were recorded continuously at specified intervals during the experiment. Drying curves obtained from the data were examined to fit into two semi-theoretical mathematical models, Lewis and Page models. The results illustrate that in spite of the high initial moisture content of the tomato slices, the drying takes place only in the falling rate period. The consistency of the two selected models was tested by using statistical parameters, namely reduced chi-square (=539;2), root mean square error (RMSE) and modeling efficiency (EF). The results of these measures have confirmed the consistency of the developed model to describe satisfactorily the thin-layer solar drying characteristics of tomato slices. en_US dc.description.sponsorship UOFK en_US dc.identifier.citation University of khartoum en_US dc.identifier.uri http://khartoumspace.uofk.edu/handle/123456789/11940 dc.publisher UOFK en_US dc.title Mathematical Modeling of Solar Drying of Tomato Slices en_US dc.type Thesis en_US
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