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How much water does iAVs use?
Evaporation is also dependent on many conditions such as climate, greenhouse structure, prevailing temps, insolation and RH plus surface area and crop(s).
In the 1986 iAVs Research, water usage was in the range of 1 to 3% per day, as shown below.
iAVs is extremely efficient.
The rate of water input (replacement of evapotranspiration losses) in the iAVs technique ranges from 1 to 3% of system capacity per day. The iAVs technique requires only 11 cubic meters of water per year for each 1.0 cubic meter of system capacity (at a 3% per day rate of loss).
Depending upon the crop, season, and the biofilter to tank volume ratio, this technique permits from 120 to over 300 crop applications with each unit volume of water. Each liter of water employed can produce, in fish and fruit, 0.7 grams of protein,7 kilo-calories of food-energy, and most essential vitamins.
The water efficiency of iAVs is at least 13 times that of UVI raft (DWC) aquaponics – and that doesn’t even account for their failure to factor rainwater into their water use data. Including annualized losses for evapotranspiration and incorporation into biomass (food) at 85% of total input and a seepage loss of 6%, each liter of water utilized by the iAVs technique can produce 6 g FW of fish and 17 g DW of vegetables.
Collectively, tilapia and tomato yields result in 0.7 g DW of protein and 7 Cal. (or 7,000 calories) per liter of water used.
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