Raj Hulasare, Ph.D., P .Eng. Temp Air, Inc Burnsville, M N, USA - - PowerPoint PPT Presentation

▶
raj hulasare ph d p eng temp air inc burnsville m n usa
SMART_READER_LITE
LIVE PREVIEW

Raj Hulasare, Ph.D., P .Eng. Temp Air, Inc Burnsville, M N, USA - - PowerPoint PPT Presentation

Sep 18, 2023 259 likes •779 views

Raj Hulasare, Ph.D., P .Eng. Temp Air, Inc Burnsville, M N, USA Presentation Outline Presentation Outline Perspective Then & Now Advantage Insect death Process Pros & Cons KSU, Purdue, M innesota Research & Application

slide-1
SLIDE 1

Raj Hulasare, Ph.D., P .Eng. Temp Air, Inc Burnsville, M N, USA

slide-2
SLIDE 2

Perspective – Then & Now Advantage Insect death Process – Pros & Cons Research & Application Our Company Conclusions Application images

KSU, Purdue, M innesota Food Proc. Plants

Presentation Outline Presentation Outline

slide-3
SLIDE 3
  • 1762, France: 69oC / 156 oF for 3 d, moth
  • 1860, England: 57oC / 135 oF for grain
  • 1910, USA: heat treatment of mills
  • 1920, USA: 30 mills use heat in OH, P

A

  • 1932, France: M B as insecticide

Used first 247 yrs ago!

Heat Treatment Heat Treatment – – Historical Look Historical Look

slide-4
SLIDE 4

History of Heat Treatments History of Heat Treatments

  • 1950’s: Quaker Oats using heat
  • 1983: EDB banned
  • 1990’s: increased interest in heat
  • 1992: M B found ozone unfriendly
  • 1994: Dursban in Cheerios
  • 2005: M B to be phased out
  • 2006: M B extension US, Canada ???

Source: P. Fields, AAFC, Canada

slide-5
SLIDE 5

Drivers Drivers - Heat Heat Treatment (HT)? Treatment (HT)?

Consumer Preference

HT

Pesticide-free Products

Insect Resistance

Higher dosage, Life stages?

Eco-Friendly Technology

Montreal Protocol US Clean Air Act

Green IPM

slide-6
SLIDE 6

Heat Advantages Heat Advantages

  • Safe: non-chemical, people-safe
  • Effective: kills all life stages
  • Eco-friendly: no ozone depletion, toxic

fumes, or corrosive effect S E E

Heat treat: Facilities, Bins & Silos

slide-7
SLIDE 7

Heat Advantages Heat Advantages

Safe Effective Eco-friendly

SEE SEE

  • No evacuation of personnel
  • No Sealing (except doorways, loading docks etc.)
  • Spot Treatments – continued productivity within

plant, offices, warehouse etc.

slide-8
SLIDE 8

Heat & Insect Death Heat & Insect Death

  • High temperature –
  • Death by Dehydration (low RH)/ desiccation
  • Above 50 °C / 120 °F
  • Cell membranes “ melt”
  • Enzyme destruction
  • Change in salt balance
  • Protein coagulation
slide-9
SLIDE 9
  • 30
  • 20
  • 10

10 20 30 40 50 60 70

  • 20

20 40 60 80 100 120 140

Temperature Effects on Insects Temperature Effects on Insects

Source: P. Fields, AAFC, Canada

Targeted temp. spectrum 120 – 140°F (50-60°C)

Temperature (°C) Temperature (°F)

slide-10
SLIDE 10

Efficacy to Control Pests Efficacy to Control Pests

  • MBr – Methyl bromide
  • PH3 - Phosphine
  • SF (Profume)
  • CO2 – Carbon dioxide
  • O3 - Ozone

. . . . . Efficacy – function of temperature

slide-11
SLIDE 11

Heat Treatment Heat Treatment

Insects – lethal threshold temperatures

HT Process HT Process High Temperature High Temperature

[120 - 140°F/(50 - 60°C)]

Low Humidity (≤ 25%) Low Humidity (≤ 25%)

(Desiccation/Dehydration)

Ambient temperature

slide-12
SLIDE 12

Heat Vs MB Heat Vs MB - Downtime Comparison (hours) Downtime Comparison (hours)

M ethyl Bromide

  • Sealing…

… … .....0

  • Set up…

… .… ..4-6

  • Fumigation…

....24

  • Aeration…

...12-24

  • TOTAL…

… 40-54

Thermal Remediation

  • Set up…

… … … ..0

  • Heat up…

… .… 6-8

  • Kill Period…

.… 24

  • Cool down…

....2-4

  • Tear down…

… .1-2

  • TOTAL…

.… 33-40

Plant evacuation mandatory Untreated areas operational

slide-13
SLIDE 13
slide-14
SLIDE 14

Positive Pressurization Positive Pressurization – Forced ambient air Forced ambient air (Patented Process) (Patented Process)

US & Canadian Patents

  • Positive pressure
  • Good air distribution
  • Hot air is pushed into corners,

cracks and crevices

  • Calculated and controlled

infiltration (4-6 air changes per hour)

  • Lower relative humidity
slide-15
SLIDE 15

Re Re-

  • circulating Inside Air

circulating Inside Air

  • Negative pressure
  • Poor air circulation
  • Uncontrolled infiltration
  • No air changes

Low temperature zones (cold spots)

slide-16
SLIDE 16

Construction Heat Principles: Construction Heat Principles: Make Make-Up vs. Recirculating Up vs. Recirculating

  • Recirculating heaters promote thermal stratification and infiltration
  • M ake-up air heaters provide uniform temperatures, pressurize the

structure, and exhaust moisture and fumes

slide-17
SLIDE 17

Equipment mobilization Setup, HT , Document & Review

Steps in Heat Treatment Steps in Heat Treatment

slide-18
SLIDE 18

Heater Heater Heater

Temperature transmitters

Receiver

Untreated Area (Office)

Treated Area

Real-time Wireless Temperature M onitoring

slide-19
SLIDE 19

Real Real-time Wireless time Wireless Temperature M onitoring System Temperature M onitoring System M onitor Temperatures M onitor Temperatures throughout heated area throughout heated area

Effective Heat Treatment Effective Heat Treatment

M anage airflow for M anage airflow for Uniform Temperature Profile Uniform Temperature Profile

COLD

HOT

Real-time adjustment Documentation for QC Worker Safety & Savings

Pockets Pockets

slide-20
SLIDE 20

Start of the Heat Treatment Start of the Heat Treatment

20 40 60 80 100 120 140 160

9/16, 6:14 9/16, 8:38 9/16, 11:02 9/16, 13:26 9/16, 15:50 9/16, 18:14 9/16, 20:38

Tx:49 sensor in office on 5th floor

Tx: 27 Tx: 28 Tx: 29 Tx: 30 Tx: 33 Tx: 34 Tx: 35 Tx: 36 Tx: 37 Tx: 38 Tx: 39 Tx: 40 Tx: 41 Tx: 42 Tx: 43 Tx: 44 Tx: 45 Tx: 46 Tx: 47 Tx: 48 Tx: 49 Tx: 50 Tx: 51 Tx: 52 Tx: 53 Tx: 54 Tx: 55 Tx: 56 Tx: 57 Tx: 58 Tx: 59 Tx: 62 Tx: 64 Tx: 65 Tx: 66 Tx: 67 Tx: 68 Tx: 69 Tx: 70 Tx: 75 Tx: 76 Tx: 77 Tx: 78 Tx: 79 Tx: 80 Tx: 81 Tx: 82 Tx: 47 Tx: 48 Tx: 49 Tx: 50 Tx: 51 Tx: 52 Tx: 53 Tx: 54

Temperature (°F)

  • Fig. 1: Real-time Temperature Profile

(27°C) (38°C) (49°C) (60°C)

slide-21
SLIDE 21

Tx: 27 Tx: 28 Tx: 29 Tx: 30 Tx: 33 Tx: 34 Tx: 35 Tx: 36 Tx: 37 Tx: 38 Tx: 39 Tx: 40 Tx: 41 Tx: 42 Tx: 43 Tx: 44 Tx: 45 Tx: 46 Tx: 47 Tx: 48 Tx: 49 Tx: 50 Tx: 51 Tx: 52 Tx: 53 Tx: 54 Tx: 55 Tx: 56 Tx: 57 Tx: 58 Tx: 59 Tx: 62 Tx: 64 Tx: 65 Tx: 66 Tx: 67 Tx: 68 Tx: 69 Tx: 70 Tx: 75 Tx: 76 Tx: 77 Tx: 78 Tx: 79 Tx: 80 Tx: 81 Tx: 82 Tx: 47 Tx: 48 Tx: 49 Tx: 50 Tx: 51 Tx: 52 Tx: 53 Tx: 54

End of the Heat Treatment End of the Heat Treatment

20 40 60 80 100 120 140 160 9/16, 20:24 9/16, 22:48 9/17, 1:12 9/17, 3:36 9/17, 6:00 9/17, 8:24 9/17, 10:48 9/17, 13:12 Tx:49 sensor in office on 5th floor

Temperature (°F)

  • Fig. 2: Real-time Temperature Profile

(27°C) (38°C) (49°C) (60°C)

slide-22
SLIDE 22

Heating in Mill

Time (h) 1 3 4.5

slide-23
SLIDE 23

Spread of Heat Treatment Spread of Heat Treatment

  • USA

– California, Indiana, M innesota, Kansas, Dakotas,

Arkansas, NJ , Florida, Wisconsin. . . … … ..

  • Canada

– Ontario, M anitoba, Alberta, M aritime provinces

slide-24
SLIDE 24

THERMAL REMEDIATION THERMAL REMEDIATION Industrial Applications Industrial Applications

  • Food Processing
  • Rice Mills
  • Flour Mills
  • Pet Food
  • Corn Mills
  • Cereal Processing
  • Bakeries
  • Warehouses
  • Pork Industry
  • Baby Food
  • Wood Packaging
  • Finished Furniture
  • Tobacco Companies
  • Custom Cabinetry
  • Hospitality / Hotels

Organic processing plants/storages Entire structure or spot treatment

slide-25
SLIDE 25

Heat Treatment of Bins & Silos Heat Treatment of Bins & Silos

Proactive – Preventative

Preventative

& Reactive - Response

Response

slide-26
SLIDE 26

Bins & Silos Bins & Silos

  • Pre-loading or Pre-harvest HT

– On-farm bins – Elevators storages – Processing facilities – Organic processing plants

  • Bin/Silo types

– Concrete – Metal

  • GI bins
  • Tanks
slide-27
SLIDE 27

Empty Bin Sanitation Empty Bin Sanitation

  • Accumulation of BGFM

under bin floors

– Insect harborage – Mold spore accumulation

  • Difficult to clean bin floors
  • Available tools difficult to use or unavailable

– Insecticide sprays have to drip through floor perforations – Blowing DE through fan does not guarantee uniform application – Chloropicrin no longer available – Phosphine requires applicator license

slide-28
SLIDE 28

PERC Project PERC Project – Purdue University Purdue University Heat Treatment of Bins & Silos Heat Treatment of Bins & Silos

  • Self contained mobile unit
  • 7.5 Hp blower motor
  • 30 KW, 230 V, 3 phase generator
  • 150 gal. capacity LPG tank
  • 1.5 million BTU/ hr heater output

TEMP TEMP-AIR MHT AIR MHT-1500: 1500:

Portable Self Contained Unit Portable Self Contained Unit Mobility with Simplicity! Mobility with Simplicity!

slide-29
SLIDE 29

Heater Heater

Hopper bottom Flat bottom

HT of bins and silos HT of bins and silos

slide-30
SLIDE 30

Advantages of HT of Bins/Silos Advantages of HT of Bins/Silos

  • S E E
  • Shorter treatment times (4 to 12 hours)
  • Bins/Silos in facilities

– Treated in rotation without shut-down

  • On farm or warehouses – no extensive sealing or

evacuation

  • No retrofitting – existing transition, bin-entry
slide-31
SLIDE 31
  • Yes, you can – effectively!
  • Benefits:
  • Effective kill of all life stages
  • Lower fuel consumption
  • Less downtime  Increased production
slide-32
SLIDE 32
  • Facility C – all adults/larvae of RFB dead at 50°C/122°F

within 12 hours – Dr. Subi

  • Facility X: 10- 12 hrs at 50 to 55°C/(122 - 131°F)
  • Adults: Drug store beetle, Tobacco beetle, RGB, RFB, CFB
  • Larvae: Drug store beetle, yellow meal worm

(Source: Dr. Paul Fields, AAFC, Canada)

  • Predictive model: Thermal Death Kinetic model (Dr Subi)
  • Smaller areas – bakeries, silo rooms ( 8 to 10 hours)
  • Treatment time = f (structural elements, size, rate of

temperature rise and T)

slide-33
SLIDE 33

Collaborative Research Collaborative Research

  • Kansas State University
  • Basic research (1999) – Dr. Subi (Stored Product pests)
  • CNMA – (2002-06) Canadian National Millers

Association

  • In collaboration with Dr Paul Fields, Winnipeg
  • PERC – Propane Edu. Res. Council
  • Purdue University (2007-08) – Dr. Maier (bins/silos)
  • University of Minnesota (2008) - Dr. Kells (bed bugs)
  • Oklahoma State University (2007)

concrete silos

  • GTI – Gas Technology Institute (2007-08)
  • Soil Nematodes – MB alternative
slide-34
SLIDE 34

Conclusions Conclusions

  • Heat kills all life stages of insects
  • Good method to locate insect problems in

industrial plants

  • Repeat customers = efficacy of heat
  • Viable alternative to methyl bromide
  • Economies of scale - will make it more affordable
  • Effective Bedbug control
slide-35
SLIDE 35

TEMP TEMP-AIR AIR

  • Largest provider of

temporary heating & cooling equipment in US

  • Custom manufactures

HVAC for rental fleet

  • 11 regional offices

serving northern US

Heat treatments for Stored Products Pest Control since 2000 Heat treatments for Stored Products Pest Control since 2000

Denver Denver Milwaukee Milwaukee Chicago Chicago Detroit Detroit Cleveland Cleveland Columbus Columbus Philadelphia Philadelphia Boston Boston Minneapolis Minneapolis Kansas City Kansas City Portland Portland

  • St. Louis
  • St. Louis
slide-36
SLIDE 36

Construction Heating Equipment Construction Heating Equipment

  • 6,000+ rental units
  • Up to 4,500,000 Btu/hr
  • Fleet rating 4 BCF/hr
  • Natural gas- and

propane-fueled heaters

  • Steam, hot water, and

electric available

  • Primary market is

commercial/industrial; residential growing

slide-37
SLIDE 37

On Site Images On Site Images

Heater Placement on multiple floors Heater Placement in rolling shutter

slide-38
SLIDE 38

Heater Placement & Layout Heater Placement & Layout

Heater Partially inside Packaging Plant Duct & Fan Layout - Packaging

slide-39
SLIDE 39

Wireless Temperature Sensors Placed Inside Sensitive Equipment

Basement

Basement, Sensitive Equipment Basement, Sensitive Equipment

slide-40
SLIDE 40

Detecting hidden infestations Detecting hidden infestations

Overhead electrical junction box 10,000s of adults, larvae, pupae!!

slide-41
SLIDE 41

Partial/Spot heat treatment in a warehouse Partial/Spot heat treatment in a warehouse

slide-42
SLIDE 42

Partial/Spot heat treatment in a warehouse Partial/Spot heat treatment in a warehouse

slide-43
SLIDE 43

Sprinkler heads and opening the machines Sprinkler heads and opening the machines

slide-44
SLIDE 44

Temperature Profile, Beetles, & Rats!!!! Temperature Profile, Beetles, & Rats!!!!

slide-45
SLIDE 45

Concrete Bin Basement and Head house Concrete Bin Basement and Head house

slide-46
SLIDE 46

Concrete Bin Basement and Head house Concrete Bin Basement and Head house

slide-47
SLIDE 47

IPM, Pest Control Co., & Heat Treatment IPM, Pest Control Co., & Heat Treatment

  • IPM - An approach to pest control that includes

biological, cultural, genetic, mechanical and chemical means with least environmental damage

  • Pest Control Cos.: Uniquely qualified to use multiple

strategies

  • Heat Treatment can be a tool in the arsenal of pest

control methods and not necessarily a replacement

slide-48
SLIDE 48

Heat Treatment: Patented scientific process

It’s more of an Art – HOW you apply it

slide-49
SLIDE 49

Thank You Thank You

slide-50
SLIDE 50

Questions? Questions?

rhulasare@temp-air.com www.thermal-remediation.com