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Published byFranklin George Modified over 6 years ago
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LOW COST, IN-TANK HEATING AND TEMPERATURE CONTROL
FOR SMALL FARM BIOFLOC SHRIMP GROWING Enertrex Corporation At the Shrimp Academy, September 8-12, 2016
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What we do Contract Research and Development (primarily private clients) (and Implementation Projects) Aquaculture (process development and fish health) Small farm energy efficiency and economic improvement Bioconversion (wastes to gas and food, rapid composting) Scientific / engineering specialized equipment Computer software and hardware for medical application
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Why we do this- Solving practical industrial / commercial problems
Utilizing staff hands-on experience Today’s presentation and participation- identify bottlenecks in Biofloc operations Help us to understand the important issues And develop useful R&D projects and collaborations
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Yes, we do grow Biofloc shrimp and tilapia!!
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Some Of Our Activities In Aquaculture / Biofloc
Floculation Control
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Some Of Our Activities In Aquaculture / Biofloc
Laboratory Scale Studies
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Some Of Our Activities In Aquaculture / Biofloc
Instrumentation & Control
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Some Of Our Activities In Aquaculture / Biofloc
Particle Control & Waste Digestion
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Small Tank Biofloc Tilapia
Heating Tube In Place Before Operation
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Midsize Tank Biofloc Shrimp
Jumper Net Heater Tubing Air Lines Thermowell
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1000 Gallon Biofloc Shrimp Heater Tubing
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Tank Heating System Why did we do this? Cost Speed Flexibility
Redundancy at low cost Application to existing and new operations
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The Concept Heat Exchange (tubing) In Tank Split Loop, Single Pump
Two Temperature Controllers One “Rough” One “Fine”
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Heat Flow “Worst Case Winter”
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Split Loop
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Split Loop With Control
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Expanding To Multiple Tanks
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Thermostat “Rough” Heater Pump
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Return Temperature Lines Controller & Valves
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Thermowell & Controller
Polyethylene (“food grade”) tubing (same tubing as used for heat exchangers)
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Heat Exchange Tubing In Place
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Heat Exchange Tube Remove
Over a year later
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Estimating Heater Tubing Length
It Is All In The Numbers Our Setup An Example By Extrapolation
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Better Ways To Build This Type Of System
Independent pumps (conventional hydronic scheme) Closed system, add surge tank(s) Use multiple heaters for redundancy Use slow-to-close solenoid valves or variable speed pumps Multiple fuels for further redundancy Avoid iron
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Better Ways To Build This Type Of System
Independent pumps (conventional hydronic scheme) Closed system, add surge tank(s) Use multiple heaters for redundancy Use slow-to-close solenoid valves or variable speed pumps Multiple fuels for further redundancy Avoid iron
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Upsides Easy to clean Low first and operating costs Safety
Water as fluid Electrical separation Flexible capacity
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Downsides PE tubing tends to float Floc accumulation on tubing surface
Tubing might occasionally get in the way
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Some Questions For You! Can you imagine how this approach might be used? Anybody done it for less $ ? Anybody done the same thing?
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Some Of Our Other Ongoing And Future Work
Low Cost, Automated Data Collection & Control Biofloc Particle Control “Bio-stability” Advanced Low Cost Bio-sensing Biological Starters, Enhancers Biosecurity
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Next Steps Exchanging experience gained
What would you like to see next? Will you help us with a short survey?
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Further Details Watch our web site in a week or so www.enertrex.com
Go to the Biofloc Systems area (Heating system and contributed files from this Shrimp Academy soon, more later in September)
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Contact Us: contact@enertrex.com Mailing Address PO Box 557681
Chicago, Illinois 60655
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