Influence of the relative humidity and temperature on atmospheric water harvesting using Arduino controlled Peltier cell.

Abstract

Atmospheric water uptake is influenced by relative humidity and temperature, key factors in the performance of a prototype designed and assembled with temperature and humidity sensors and a condensation system based on the Peltier cell controlled by Arduino. To evaluate its efficiency, 50 experimental tests were carried out at the Abra “El Gavilán”, located at 3155 masl, Cajamarca - Peru. The results showed that water generation is directly influenced by relative humidity, reaching its maximum performance in environments with values higher than 95%, while moderate temperatures favor the condensation process. Likewise, it was shown that the operation time and the number of Peltier cells used play a key role in the amount of water collected, suggesting that the system can be optimized and scaled to improve its efficiency. Statistical analysis confirmed a positive correlation between relative humidity and water production, supporting the viability of this technology in regions with high humidity.