Short for PA#, The version number is represented by #.
This project aims to design and create the world’s first Thermoelectric Plate based portable air cooling devices with a target of handheld and at least 1 hour running time.
The budget has been limited to less than 1000HKD per prototype. And the manufacturing price of raw material (excluding shipping) should be lower than 100HKD.
The design of PA1 to PA5 did not have any prototype as there are still design problems inside the sketch that made the sketch not possible to manufacture. Reference design sketches are included as reference.
The PLA made Wind Directional Tunnel was introduced to PA25 for concentrating the wind outlet for much cooler feel. The image was not included in this report. The Wind temperature and speed is much better than the previous prototype. However, the wind is not cold enough to feel like an air-conditioner. The cooled air generated by this prototype only feels a little bit cool under hot summer days.
The PA26 design with 18650 (made in Japan) and SABC3.3 (Ultra compact version of SABC3) . This version has a size similar to PA11 with cold wind blowing outward from the top. PA26 has built in 3.7V 3200mAh battery x4 with charging current max out at 5V 2A (SABC 3.3). Battery array output at max 7.4V 6A but the TEC-12705 usually draw around 2A max under idea conditions. This is the final development version of the Portable Air Conditioner Project.
This project has successfully invented the portable air conditioner with cold breeze without the need of water.