Figure 5 display the velocity profile of the new ICS-SWH. An increase in velocity, compared to the four fin design, was observed resulting in an increase of the maximum velocity of 2%. The main velocity pattern occurs between 1.90mm/s to 3.8mm/s compared with a 1.86mm/s to 3.72mm/s for the five and four fins collectors respectively.

The longitudinal temperature stratification of the five fin collector is shown in Figure 6. Stratification occurs from a maximum water temperature of 295.9°K to a minimum temperature of 293.8°K at the top and bottom of the collector respectively resulting in a 2.1°K temperature difference from top to bottom. This corresponds to a 19% decrease in stratification.

2.95e+02 2.95e+02 2.94e+02 2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02

2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02 2.94Є+02 2.93e+02 2.93e+02 2.93e+02 2.93e+02 2.93e+02 2.93e-t02

Figure 6: Longitudinal water temperature stratification — 5 fins, side view, after 20mn