Experimental and CFD Investigation of a Modified Uneven-Span Greenhouse Solar Dryer in No-Load Conditions under Natural Convection Mode

An uneven-span modified greenhouse dryer was constructed and tested in no-load conditions under natural convection mode the weather of Marrakech, Morocco, for two distinct days. Moreover, a CFD evaluation performed as tool to visualize air temperature distribution inside dryer. For validating model, variations along hours day were compared experimental results. A good agreement is obtained between computed measured with difference not exceeding 8.46°C, correlation coefficient ( r ) root mean square percentage deviations id="M2"> e 0.94 8.17, respectively. Furthermore, maximum be 56°C 52°C while minimum relative humidity 17% 12%, day-1 day-2, The benefice using asphalt floor covering material revealed an efficient way heat at low solar radiations. performances evaluated by net gain variation validate effectiveness This latter found equal 46% 48% days,