Want a comfortable workplace or livingroom with green walls that clean and freshen the air and helps you reduce your stress? Check out this green walls –FreshWall by Fresh Effect:
We’re a Finnish start-up company which specializes in active green walls which can purify air 100x better than traditional green walls. Few years ago we were in a need for easy way to get our green walls use GSM network to communicate with our servers. In the very first prototype we used ethernet shield for Arduino as we thought GSM is hard and problematic to do right. However we quickly found out that ethernet connection (or WLAN) wouldn’t work in the long run as it’s always hard to find ethernet wires close to our installation location. So we started thinking about using GSM. Back then we tested several options but once we found the breakout module for SimCom900 from Open-Electronics.org we didn’t look back. Open-Electronics also provides great library for the GSM shield to get started on the coding!
Via Open-Electronics.
“…the air is actively ventilated between the roots/pots of the plants. One one hand, this makes any claimed air-cleaning/filtering insignificant, since most of the air just bypasses the plant roots.”
I’m not sure about that. Adding a fan to a heatsink increases the heat transfer rate much more than the same heatsink with no fan, even though most of the air bypasses the heatsink. I don’t know exactly what mechanisms are involved with the root ventilation, but surely the water transpiration rate driven by a H20 concentration gradient, and that is going to depend on airflow. Same with any CO2, O2 or other gas transfer, I expect.