2022 年 13 巻 1 号 p. 152-157
Most Filipinos living in remote rural and island communities rely on unsafe drinking water sources due to a lack of reliable water supply. With this, an atmospheric water generator (AWG) can become an alternative water source by condensing and collecting water vapour present in the air. However, previous research on the design of AWG devices was conducted outside the Philippines and most studies did not design the longitudinal profile of the fins and intake fan component of the device. This study designed the longitudinal fin profile of the fins and intake fan speed based on the climatic conditions of Manolo Fortich, Bukidnon and analysed the performance of the device by conducting a field experiment. The study designed the extended fins and varied the intake fan speed by conducting a parametric analysis using existing heat and mass transfer equations. The study then conducted a field experiment of the AWG device by placing the device in a secure open space. Results of the design showed that the 9 cm fin length was optimal for the device and that higher intake fan speed were more suitable for high relative humidity (RH) and high air temperature conditions. Results from the field experiment showed that higher water productivity was observed at higher RH level compared the lower RH levels. The study concludes that a longer length of copper fins and greater magnitude of intake fan speed does not necessarily translate to higher water productivity and that higher water production rates were observed during high RH levels.