Air Circulation Considerations for Heat Treatments Ole Dosland Technical Training Director

Determining Heater and Fan Requirements Electric Heaters Gas Heaters Steam Heaters Fan Placement –Air Circulators Energy Availability Internal Capabilities Outside Services Combination

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

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

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 “B’s”

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

Air Circulation Considerations Be Windy –Too many air movers are better than too few –Use built in existing fixed air movers don’t 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

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 facility’s 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

Today’s 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”

Today’s 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

A Final Thought Planning, Preparation and Practice Prevents Pitiful Performance Rule of “3” –Experiment and Learn –Scale Up and Write SOP’s –Repeat with Comfort

Air Circulation Considerations for Heat Treatments Thank You