The study looked at how temperature affects the efficiency of a solar panel with a heat collector. They found that as temperature rises, the panel's performance decreases by 0.08% per degree. By cooling the panel from 60°C to 25°C, they saw a 23% increase in power output, an 18% increase in voltage, and a 3% increase in efficiency. Overall, the combined solar panel and heat collector system was 13% more efficient than using the heat collector alone.