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The world population is increasingly aware of environmental issues involving our planet. In search of solutions that will contribute to the conservation of the environment, you can use the renewable energies that are in great expansion, being the use of solar energy a solution for this purpose. This study aimed to evaluate the energy absorption capacity of a hybrid silver nanofluid and titanium dioxide used for direct solar absorption in a "Solar Wall." The experiments performed were exposed for 16 hours for several days. Various concentrations were analyzed, where a concentration of 23.2 ppm titanium dioxide was set, and silver varied to 0.40625 ppm, 0.8125 ppm, 1.625 ppm, and 3.25 ppm corresponding to a 3% molar fraction. 6%, 12% and 25% respectively. An analysis of the temperature profile was made, which showed a better utilization of the sample with a 12% molar fraction that obtained a temperature gain of 8.3 ° C corresponding to a 14.9% gain. An analysis of the stored energy ratio was analyzed, observing a good response of nanofluids at the early solar incidence and a maximum stored energy for the sample of 6%. The other metric analyzed was the specific absorption rate that reached a maximum value of 0.009293 KW / g. The work showed that for the preparation of hybrid nanofluid, not always increasing the silver concentration implied better results and through temperature profile analysis and energy analysis metrics, it was concluded that a silver concentration of 0.8125 ppm together With a concentration of 23.2 ppm (6% molar fraction) better gains are obtained for the use of nanofluid in the solar wall.

EXPERIMENTAL ANALYSIS OF A SOLAR HEAT SYSTEM USING HYBRID SILVER NANOFLUID AND TITANIUM DIOXIDE.