Yesterday I have seen TED talk about OpenAG and immediately thought “this is cool, I want to build this”. I don’t expect to grow cheaper food, I just like geeky things.
I have read almost whole OpenAG website but I have not found anything about power consumption of food computer.
According to build instructions in Github, the power consumption isn’t negligible. One FC requires 200W heater, 90W LEDs, roughly 15 W for air pump/stone and approx. 5W for Raspberry and Arduino. I did not count power consumption for pH/temp/humidity sensors.
- One month have 30 days = 720 hours.
- Always on air pump/stone will consume 10.8 kWh (15W * 720hours).
- I am not sure how many hour per day are LEDs turned on. I assume 12 hours per day = 27.9 kWh (90W * 310hours).
- Heater with fan is turned on 5 hours a day (this is just wild guess) = 30 kWh (200W * 150hours).
- Always on Raspberry PI and Arduino = 3.6 kWh (5W * 720hours).
- Total: 72.3 kWh per month.
Is there anyone who measured consumption of his/her FC? How many hours per day are LEDs and heater turned on? Can anyone confirm my result?
Since FC is quite small, you can grow very limited amount of food per month. So I suppose food computer v1.1 is just really cool tech project. I don’t think someone will build it for cheap food.
Maybe if all used electronics are designed for 12V DC, you can easily use photovoltaic panels and lower grid power consumption. Though I am not sure how much.
Nevertheless I like this idea and want to build one FC