development of a generalist, integrative and predictive ......tankid specie occupation grow absorb...
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Development of a generalist, integrative
and predictive model for aquaponics
Benoît Stalport 20/11/2019
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NUMERICAL
MODEL
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What are models ?
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« All models are wrong, but some are useful » - George Box
Model VS Measurements
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• Balance equations are based on two fundamental principles of
thermodynamics : the mass conservation and the energy conservation
• « Nothing is created, nothing is lost, all is transformed »
𝑑𝑚
𝑑𝑡= 𝑄𝐼𝑁 - 𝑄𝑂𝑈𝑇 + 𝑄𝑁𝑃
SYSTEM
𝑄𝐼𝑁 𝑄𝑂𝑈𝑇𝑚𝑆𝑌𝑆
𝑄𝑁𝑃𝑊ℎ𝑒𝑟𝑒:
Q =dm
dt
𝑑𝑡 → 0
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Fish
Plants
Water
Water
Atmosphere
Bacteria
Aquaponic system =
= any object with a mass
= Q = dm/dt
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Individual-Based
Plants species
Fish species
Predictive
Accurate
Compatible with the app
Modular and generalist
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Methods
Attributes
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Methods
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PlantObject
ID
TankID
Age
FruitMass
PlantMass
LeafArea
LightIntensity
Specie
Introduce
Sell
Grow
Absorb
Transpirate
PumpObject
ID
FromTankID
ToTankID
MaxFlowRate
Configuration
Consumption
State
Activate
Deactivate
+ Feedings, Chemicals, Electrics,
etc.
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BactPopObject
ID
TankID
Specie
Occupation
Grow
Absorb
Excrete
TankObject
ID
RoomID
Capacity
Volume
FreeSurface
InsideSurfaces
UnitLiterPrice
ChemicalsConc.
pH
DO
EC
Temperature
LiterPrice
RoomObject
ID
Temperature
RH
CO2
WindSpeed
FishObject
ID
TankID
Age
Mass
Length
Specie
Introduce
Sell
Eat
Grow
Excrete
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Plants growth Evapotranspiration Fish growth
Economics EnergyMicrobiology Nutrients
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Modelled nutrients concentrations in the fish tank
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CALIBRATION VALIDATION
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