The global scarcity of potable water remains a pressing human challenge, given that 97% of the Earth's water is saline. Therefore, solar desalination that uses cheap solar energy is the best way to prepare fresh water. This study employs a solar desalination apparatus featuring 28 steps, with dimensions of 30 mm in height, 110 mm in width, and 840 mm in length. The present work was conducted to improve and increase this device's efficiency and water output by examining magnetic field impact using 𝐹e3𝑂4 ferrofluid. Also, the ultrasonic phenomenon's effect to increase the device's efficiency is carried out. To increase the daily production rate of fresh water, the mentioned device has been tested and optimized in various configurations including 1) Simple configuration, 2) incorporating magnetic filing sheets, 3) utilizing two solenoids at different turns of 275 and 1000, 4) employing 𝐹e3𝑂4 nanofluid, 5) with 𝐹e3𝑂4 nanofluid and magnetic filing sheets, 6) with 𝐹e3𝑂4 nanofluid, solenoids at different turns of 275 and 1000, 7) involving the ultrasonic phenomenon, 8) utilizing 𝐹e3𝑂4 (Iron (III) Oxide ) nanofluid, solenoids, and ultrasonic phenomenon, experimentally tested and optimized. After examining the results, it was found that mode 8, which includes the combined effect of 𝐹e3𝑂4 nanofluid, solenoid, and ultrasonic phenomenon, had the highest water production rate compared to the simple mode and it could be a cost-effective choice. The device's efficiency from 55.2% in mode 1 has reached 63.4%,72.9%,74.3%,80.2%,87.5% respectively in mode 2,3,5,6, 8 and the basin temperature has reached the highest value of 66.8°𝐶𝐶 at 2 PM in mode 8. According to the test results, it could be concluded that the use of sonicated water with 𝐹e3𝑂4 Ferrofluid under magnetic field effect has led to a significant increase in the device efficiency. تفاصيل المقالة