Feasibility Study And Performance Evaluation (simulation) Of Solar Dryer For Akaki Spare Part And Hand Tools Share Company Moulding Sand Drying Mechanism

ilica sand is sand that is used for molding processes. When a catalyst is added to it, itrndevelops the bonding characteristics of the raisin, which binds the silica sand together.rnIts moisture content (17.24% initial and 0.5% final moisture content) is extremely criticalrnsand additive that can be greatly impact casting quality. In this study flat plate solarrncollector was used because, it is the most important type of solar collector and it is simplernin design, has no moving parts and requires little maintenance. The analysis of heatrntransfer coefficient (losses) through flat plate collector was discussed and the techniquesrnthat used to reduce these losses also mentioned (by using insulation). Mathematicalrnmodeling of solar dryer and drying chamber was described. This paper presents designsrnand performance evaluation of solar dryer for silica sand with its cost estimation. In therndryer, the heated air from a separate solar collector is passed through a tray, and at thernsame time, vertical blackened wall of the drying chamber, which is exposed to solarrnradiation. The results obtained during the test period revealed that the temperatures,rnmoisture removed, drying rate and drying efficiency through dying chamber wererndecreasing during its upraise path. Initial cost of model solar dryer was estimated (2805rnETB). The number of dryer required is eleven so the total cost is equal to 30855ETB

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