Performance Evaluation of Solar Operated Snapsack Sprayer

Various types of knapsack sprayers produce different impacts on agriculture in terms of protection. These parameters describe their advantages and disadvantages. Solar operated knapsack sprayer using 37 watt solar panel facilitate to operate it on both modes independently i.e. on battery mode and on directly solar panel mode. Overall model design provides weight of panel as well as weight of sprayer on operator shoulder, which facilitate effortless operation. Solar panel provides shadow on the head of the operator which gives protection from high solar intensity. Sprayer can run 2.5 hours more after 5 hours of operation in full solar intensity which ultimately provides spraying operation facility at night. Rate of flow of liquid through sprayer is influenced by the liquid head. Sprayer is capable of spraying the liquid 360 liter/ha in 4.00 h at a walking speed of 0.7 m/s. Discharge rate of sprayer is 0.0267 liter/s but there is a slight chances of variation in the discharge capacity due to lack of constant walking speed of operator during the field operation.