New Tools. to improve IRS applications. Iñigo Garmendia Olaker Spraying R&D GOIZPER SPRAYING

Transcription

1 New Tools to improve IRS applications Iñigo Garmendia Olaker Spraying R&D 1

2 1 Introduction 2

3 1. Introduction Indoor Residual Spraying (IRS) Important Method to fight against transmission of Malaria 3

4 1. Introduction Indoor Residual Spraying (IRS) Efficiency IRS Operator s safety IRS Operator s Comfort IRS operator 4

5 2 IRS Efficiency 5

6 1. Introduction Objective of IRS Operators Apply the correct dossage of insecticide on all surfaces (specified by the insecticide manufacture) at the correct droplet size (Ø>200 microns WHO) HIGH COVERAGE 6

7 2. IRS Efficiency IRS SPRAYING PARAMETERS 1) Concentration of insecticide in the tank 2) Nozzle: Even Fan 8001 or ) Pressure in the nozzle/tank 4) Distance from the surface: 45 cm 5) Spray speed: 2.5 sec/m 7

8 2. IRS Efficiency Using Traditional Spraying Equipment: Very difficult to spray uniform dosage on the walls 1) Concentration of insecticide in the tank 2) Nozzle: Even Fan 8001 or ) Distance from the surface: 45 cm 4) Spray speed: 5 sec for 2 m wall 5) Pressure in the nozzle/tank: variable 8

9 2. IRS Efficiency 2.1. Pressure variation in the tank & nozzle 250 m 2 NOT EASY Frequent checking of pressure gauge 9

10 2. IRS Efficiency Conclusions: Pressure gauge Considerable variation in the DOSAGE of insecticide (aprox. ±25%) measured on wall surfaces 10

11 2. IRS Efficiency 11

12 2. IRS Efficiency 250 m 2 EASIER No need to worry about pressure Uniform flow rate (lower value) and Dosage (median value). 12

13 2. IRS Efficiency 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 m 2 (8 ltr. Instead of 10 ltr.) 13

14 2. IRS Efficiency 2.2. Nozzle Erosion MAIN EROSION FACTORS 1) Nozzle material and internal design 2) Insecticide type 3) Pressure in the nozzle (bar/psi) 4) Working temperature 14

15 2. IRS Efficiency % Flow rate increase Erosion of nozzle provokes Losing MONEY 8002E Brass nozzle (3 bar) % E Hardened Stainless steel (3 bar) % 20 Test made following the conditions described in ASAE standards for agricultural nozzle erosion (1991) with 6% of KAOLIN Time (hour) 15

16 2. IRS Efficiency Recent Developments has led to more DURABLE and COMPETITIVE nozzles Low erosion materials and manufacturing processes Nozzle Internal Design using CFD software 16

17 2. IRS Efficiency Low Erosion Nozzles.. Saving MONEY % Flow rate increase % E Brass nozzle (3 bar) 8002E Hardened Stainless steel (3 bar) % 20 New low erosion nozzle (3 bar) less than % Time (hour) 17

18 2. IRS Efficiency 2.3. Dispersion of the insecticide inside the tank

19 3 Blockage of Nozzles 19

20 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 20

21 3. Blockage of nozzles 3.1. Blockage from inside particles Solution 1 Dirty water Triple filtering system Nozzle Filling mouth 1 3 Handle 21

22 3. Blockage of nozzles 3.1. Blockage from inside particles Solution 2 Dirty water Internal Nozzle Design with higher free flow hole size Hole Size 1 Narrow Wider 22

23 3. Blockage of nozzles 3.2. Blockages from outside dirtyness 23

24 4 IRS Operator s Safety 24

25 4. IRS Operator s Safety 4.1. Risk of insecticide contamination Using Traditional Spraying Equipment: High volume of inhalable insecticide droplets are sprayed Pressure (Nozzle) % inhalable insecticide 3.8 bar (55 psi) 37 % 1.8 bar (25 psi) 20 % Respiratory Mask 25

26 4. IRS Operator s Safety Risk of insecticide contamination Using Traditional Spraying Equipment: High volume of inhalable insecticide droplets are sprayed Respiratory Mask 26

27 4. IRS Operator s Safety New Tools Low Pressure CFV Low Drift Nozzle Maintains constant low spray pressure Reduces production of small droplets volume 27

28 4. IRS Operator s Safety Inhalable insecticide Traditional Spraying equipment New Tools Pressure Gauge % Low Pressure CFV 10 % Low Drift Nozzle Better efficiency and lower risk of contamination 28

29 4. IRS Operator s Safety 4.2. Risk of Overpressurizing the tank Traditional Spraying equipment Safety Valve Pressure Gauge Overpressurization is posible Pressure automatically released at 4 bar/55psi 29

30 5 IRS Operator s Comfort 30

31 5. IRS Operator s Comfort JOB done by an IRS OPERATOR 1 day IRS Round (55 days) Houses sprayed Hours carrying sprayer Kgr. One shoulder Put on/take off the sprayer: Strokes pressurizing sprayer:

32 5. IRS Operator s Comfort JOB done by an IRS OPERATOR 16 Kgr. Very tiring and uncomfortable task Risk to lose precision in spraying technique One shoulder 32

33 5. IRS Operator s Comfort NEW MATERIALS and MANUFACTURING PROCESSES 10 Kgr. Two shoulders Very Light Sprayers (less than 2Kgr. empty) More Comfortable (possible to carry in the back) Pressure, Corrosion and UV resistant 33

34 6 Cleaning and Maintenance 34

35 6. Cleaning and Maintenance New materials offer new design possibilities Sprayer design (fewer parts) Very Easy 100 % Tool free 35

36 7 Conclusions 36

37 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 37

38 Goizper S.Coop