Air Circulation Considerations for Heat Treatments

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Air Circulation Considerations for Heat Treatments

• Ole Dosland
• Technical Training Director

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Determining Heater and Fan Requirements

• Electric Heaters
• Gas Heaters
• Steam Heaters
• Fan Placement
• Air Circulators

• Energy Availability
• Internal Capabilities
• Outside Services
• Combination

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Determining Heater and Fan Requirements

• Efficient Economical Distribution Of Heat
• Uniform Distribution Of Heat
• Minimize Structure And Equipment Damage
• Heat Treat Time Line Impact Requirements
• Set up, start heaters and fans
• Heat retention
• Cool down
• Remove heaters and fans

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Determining Heater and Fan Requirements

• Ease Of Monitoring
• Temperature and Humidity
• Insects
• Humans
• Achieve Insect Mortality
• Lethal Hot Air Must Reach The Insect
• In equipment
• In structures
• Both

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Air Circulation Considerations

• Identity Air Movement Within Heat Zone (s)
• One way positive pressure slow exhaust approach
• Horizontal or vertical swirl return air
  approach
• Combination
• side rooms and equipment blockage
• leakage factor
• window and door frame work
• air exhausts and intakes
• 3 Bs

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Air Circulation Considerations

• Be Flexible
• Air circulators that swivel are better than fixed
• Large units (i.e. 36air circulators)
• larger spaces
• Small units (i.e. 20 box fans)
• smaller spaces
• side rooms and equipment blockage
• Identify a quick exhaust plan, if needed

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Air Circulation Considerations

• Be Windy
• Too many air movers are better than too few
• Use built in existing fixed air movers
• dont restrict from the air movement plan
• supplement with portable units
• Create a noticeable breeze to the skin
• Too much air movement is better than not enough
• Protect sensitive equipment with dedicated units

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Air Circulation Considerations

• Be Cautious
• The first few hours will be a busy activity of
  monitoring and adjusting air movement
• Learn from the initial heat treatment
• keep an accurate map of heaters and air movers
• develop a thorough report for future reference
• Each facilitys heat treatment will be different
• no two heat treat zones are alike
• no two days are alike
• Have a back up energy plan in place

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Todays Situation

• The Food Industry
• Learning curve
• Food experts
• The Pest Control Industry
• Learning curve
• Pest experts
• Working Together To Meet A Need
• Lead, follow or get out of the way

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Todays Situation

• Back To The Future Heat Technology
• Looking Forward To Futuristic Technology
• Specialized equipment
• Remote monitoring
• Instantaneous data tracking
• Field Application Research and Education
• Prevent horror stories from neophyte attempts
• Protect viability of using heat for insect control

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A Final Thought

• Planning, Preparation and Practice Prevents
  Pitiful Performance
• Rule of 3
• Experiment and Learn
• Scale Up and Write SOPs
• Repeat with Comfort

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Air Circulation Considerations for Heat Treatments

• Thank You