1. LOW COST, IN-TANK HEATING AND TEMPERATURE CONTROL
FOR SMALL FARM BIOFLOC SHRIMP GROWING
Enertrex Corporation
At the Shrimp Academy, September 8-12, 2016

2. 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

3. 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

4. Yes, we do grow Biofloc shrimp and tilapia!!

5. Some Of Our Activities In Aquaculture / Biofloc
Floculation Control

6. Some Of Our Activities In Aquaculture / Biofloc
Laboratory Scale Studies

7. Some Of Our Activities In Aquaculture / Biofloc
Instrumentation & Control

8. Some Of Our Activities In Aquaculture / Biofloc
Particle Control & Waste Digestion

9. Small Tank Biofloc Tilapia
Heating Tube In Place Before Operation

10. Midsize Tank Biofloc Shrimp
Jumper Net
Heater Tubing
Air Lines
Thermowell

11. 1000 Gallon Biofloc Shrimp
Heater Tubing

12. Tank Heating System Why did we do this? Cost Speed Flexibility
Redundancy at low cost
Application to existing and new operations

13. The Concept Heat Exchange (tubing) In Tank Split Loop, Single Pump
Two Temperature Controllers
One “Rough”
One “Fine”

14. Heat Flow
“Worst Case
Winter”

15. Split Loop

16. Split Loop With Control

17. Expanding To Multiple Tanks

18. Thermostat “Rough” Heater Pump

19. Return Temperature Lines Controller & Valves

20. Thermowell & Controller
Polyethylene (“food grade”) tubing
(same tubing as used for heat exchangers)

21. Heat Exchange Tubing In Place

22. Heat Exchange Tube Remove
Over a year later

23. Estimating Heater Tubing Length
It Is All In The Numbers
Our Setup
An Example By Extrapolation

25. 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

27. 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

28. Upsides Easy to clean Low first and operating costs Safety
Water as fluid
Electrical separation
Flexible capacity

29. Downsides PE tubing tends to float Floc accumulation on tubing surface
Tubing might occasionally get in the way

30. Some Questions For You!
Can you imagine how this approach might be used?
Anybody done it for less $ ?
Anybody done the same thing?

31. 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

32. Next Steps Exchanging experience gained
What would you like to see next?
Will you help us with a short survey?

33. 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)

34. Contact Us: contact@enertrex.com Mailing Address PO Box 557681
Chicago, Illinois 60655