1 2013 - GOIZPER SPRAYING

to improve IRS

applications

New Tools

Iñigo Garmendia

Olaker Spraying R&D

Introduction

1

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1. Introduction

Important Method to fight against transmission of Malaria

Indoor Residual Spraying (IRS)

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1. Introduction

Indoor Residual Spraying (IRS)

IRS operator

• Efficiency

• IRS Operator´s safety

• IRS Operator´s Comfort

IRS Efficiency

2

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1. Introduction

“Apply the correct dossage of insecticide on all surfaces

(specified by the insecticide manufacture) at the correct droplet size (Ø>200 microns WHO) ”

Objective of IRS Operators

HIGH COVERAGE

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2. IRS Efficiency

3) Pressure in the nozzle/tank

4) Distance from the surface: 45 cm

5) Spray speed: 2.5 sec/m

1) Concentration of insecticide in

the tank

2) Nozzle: Even Fan 8001 or 8002

IRS SPRAYING PARAMETERS

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2. IRS Efficiency

3) Distance from the surface: 45 cm

4) Spray speed: 5 sec for 2 m wall

5) Pressure in the nozzle/tank: variable

1) Concentration of insecticide in

the tank

2) Nozzle: Even Fan 8001 or 8002

Very difficult to spray uniform dosage on the walls

Using Traditional Spraying Equipment:

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2. IRS Efficiency

2.1. Pressure variation in the tank & nozzle

NOT EASY Frequent checking of pressure gauge

250 m2

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2. IRS Efficiency

Conclusions:

Considerable variation in the DOSAGE of

insecticide (aprox. ±25%) measured on wall surfaces

Pressure gauge

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2. IRS Efficiency

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2. IRS Efficiency

Uniform flow rate (lower value)

and Dosage (median value).

EASIER No need to worry about pressure

250 m2

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Conclusions:

1. BETTER EFFICIENCY: Uniform dosage of insecticide is sprayed during all the operation

2. SAVING WATER and MORE COMFORTABLE: 20% less water is used to sprayed 250 m2 (8 ltr. Instead of 10 ltr.)

2. IRS Efficiency

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2. IRS Efficiency

2.2. Nozzle Erosion

1) Nozzle material and internal

design

2) Insecticide type

3) Pressure in the nozzle (bar/psi)

4) Working temperature

MAIN EROSION FACTORS

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2. IRS Efficiency

8002E Brass nozzle (3 bar)

8002E Hardened Stainless steel (3 bar)

60 30

% Flow rate

increase

Time (hour)

% 20

% 75

Erosion of nozzle provokes… Losing MONEY

Test made following the conditions described in ASAE standards for agricultural nozzle erosion (1991) with 6% of KAOLIN.

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2. IRS Efficiency

Nozzle Internal Design using CFD software

Low erosion materials and

manufacturing processes

Recent Developments has led to…

more DURABLE and COMPETITIVE nozzles

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2. IRS Efficiency

New low erosion nozzle (3 bar)

% Flow rate

increase

less than

% 10

Low Erosion Nozzles….. Saving MONEY

8002E Brass nozzle (3 bar)

8002E Hardened Stainless steel (3 bar)

60 30 Time (hour)

% 20

% 75

0

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2. IRS Efficiency

2.3. Dispersion of the insecticide inside the tank

1 2 3

Blockage of

Nozzles

3

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3. Blockage of nozzles

Blockage of nozzles … is one of the most frequent issues appointed by operators

Dirty water Placing the nozzle in the ground

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3. Blockage of nozzles

Solution 1

Triple filtering system

1

Dirty water

3

Nozzle

Handle

Filling mouth

3.1. Blockage from inside particles

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3. Blockage of nozzles

Solution 2

Internal Nozzle Design with higher free flow hole size

1

Dirty water

3.1. Blockage from inside particles

Narrow

Wider

Hole Size

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3. Blockage of nozzles

3.2. Blockages from outside dirtyness

IRS Operator´s

Safety

4

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4. IRS Operator´s Safety

4.1. Risk of insecticide contamination

High volume of inhalable insecticide droplets are sprayed

Respiratory Mask

Pressure (Nozzle)

% inhalable insecticide

3.8 bar (55 psi) 37 %

1.8 bar (25 psi) 20 %

Using Traditional Spraying Equipment:

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4. IRS Operator´s Safety

Risk of insecticide contamination

Respiratory Mask

High volume of inhalable insecticide droplets are sprayed

Using Traditional Spraying Equipment:

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4. IRS Operator´s Safety

New Tools

Low Pressure CFV Low Drift Nozzle

Maintains constant low spray pressure

Reduces production of small droplets volume

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4. IRS Operator´s Safety

Traditional Spraying equipment

Inhalable insecticide …

37 – 20 %

Pressure Gauge Low Pressure CFV

Low Drift Nozzle

New Tools

10 % Better efficiency and lower risk

of contamination

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4. IRS Operator´s Safety

Traditional Spraying equipment

Pressure Gauge

Safety Valve

Overpressurization is posible

Pressure automatically released at 4 bar/55psi

4.2. Risk of Overpressurizing the tank

IRS Operator´s

Comfort

5

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5. IRS Operator’s Comfort

JOB done by an IRS OPERATOR

1 day IRS Round (55 days)

Houses sprayed

Strokes pressurizing sprayer:

Put on/take off the sprayer:

Hours carrying sprayer

10 550

4 220

840 46.000

25 385 16 Kgr.

One shoulder

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5. IRS Operator’s Comfort

JOB done by an IRS OPERATOR

• Very tiring and uncomfortable task

• Risk to lose precision in spraying technique 16 Kgr.

One shoulder

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5. IRS Operator´s Comfort

• Very Light Sprayers (less than 2Kgr. empty)

• More Comfortable (possible to carry in the back)

• Pressure, Corrosion and UV resistant

10 Kgr.

Two shoulders

NEW MATERIALS and MANUFACTURING PROCESSES

Cleaning and

Maintenance

6

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6. Cleaning and Maintenance

New materials offer… new design possibilities

• Sprayer design (fewer parts)

• Very Easy • 100 % Tool free

Conclusions

7

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7. Conclusions

• Importance of IRS

• Using New Tools already available increases efficiency, safety and comfort

• New tools deliver better IRS,

save money and protect lives

38 2013 - GOIZPER SPRAYING Goizper S.Coop. - www.goizper.com