Within the indirect heating channels, 3.25 mm wide square rods separated by 5 mm provided the best balance between design simplicity and heat transfer (Figure ). These components can be readily purchased and rapidly installed into the collector by using glue. Figure shows the final experimental set up. Finally, to test simulations effectiveness, the cylindrical collector heating was analyzed experimentally by replacing the collector with a thermal probe. It was estimated that a cylindrical collector temperature up to 95±3°C can be achieved by setting the heater temperature to 150 o C (Figure ). Experimental and simulation demonstrate a correlation of over 92%, which only slightly varies as the collector temperature increases.