DEVELOPMENT OF BATTERY ELECTRIC VEHICLE SPRAYER.
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Date
2021-02-02
Authors
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Publisher
Dr. Punjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
Application of chemical pesticides is one of the most important processes in agricultural production, but also one of the most dangerous agricultural operations. Spraying has a very important role to play to reduce the harvest losses and improving productivity. To reduce the dependency on the fossil fuels a low-cost Battery Electric Vehicle (BEV) sprayer was developed in the present investigation which has a boom sprayer attachment and battery electric vehicle as a prime mover. The developed system has high uniformity of spray, the spray distribution along with the swath and easy to adjust i.e., height of boom over a target crops a ladder type arrangement is provided for better performance.
A BEV sprayer was developed in the Department of Farm Power and Machinery, Dr. PDKV Akola with an objective to perform satisfactory spraying operation in the field crops to improving the chemical efficiency and to reduce the labor cost by promoting the green energy. FEM analysis of chassis by using ANSYS software and 3D computer added design software’s like CATIA was found suitable to make a necessary assumption and changes in the conceptual design phase which helps to reduces the repetitive fabrication work and time. The battery electric vehicle sprayer was designed with an aim to traversing between the row crops of 30, 45 and 60 cm spacing or row width more than 90 cm. Hence, the wheels, motor, battery and caster wheel are located in the narrow drive unit. The newly design BEV sprayer has an overall dimension (L X B X H) of 1560 x 6000 x 1020 mm with 6 m long boom while in rod transport with the folded boom it was 1560 x 2000 x 1060 mm. It was observed that an electric motor of 1 kW, 48 V, BLDC capable to propelled the vehicle as it developed a 99 N-m torque than the required (68 N-m) with the design gear ratio of 25:1. The design pack of batteries has 23 kW which is remains 10 kW after eliminating the values of Peurkrts effect and 80 per cent of discharge rate. During the running in test, it was noticed that 443.85 Wh/km is the maximum power requirement of the BEV sprayer at speed of 3.5 km/h on loaded condition with a continuous work of 7 hours. The developed BEV sprayer was tested in the laboratory and on the experimental field for optimization of the operating parameters for Greengram crop. After optimizing the operational parameters, the field tests were carried on such optimized parameters for determining the techno-economic feasibility of the BEV sprayer.
The nozzles with 0.6 mm, 0.8 mm and 1.0 mm orifice size were tested in the lab at 3 kg/cm2 pressure settings for verifying the feasibility with the relevant IS test code. All three nozzles were observed feasible to used and it was observed that the discharge rate to be increase with increases in orifice size and pressure. All three nozzles were tested in the laboratory on Spraytech Digital Droplet Analyzer for its droplet characterization for its categorization on the basis of spray with the relevant IS test code. It was observed that the droplet size increases with the increase in orifice size and decrease in the concentration of fine to course spray. All three produces the maximum droplet concentration between 100 to 400 µm. Hence, on the basis of droplet size, the sprayer can be categorized as fine spray.
Description
The present research work was carried out to develop the battery electric vehicle sprayer with low cost and time saving over the traditional methods. Optimization of the operating parameters were carried out to analyze the combine effect of the factors at levels on the dependent variables viz., orifice diameter, forward speed and pressure. Performance evaluation of sprayer were carried out for optimized parameter in Greengram crop.
Keywords
Citation
KARALE, DHIRAJ SADASHIVRAO. (2020). Development of battery electric vehicle sprayer. Department of farm power and machinery (Agricultural Engineering), Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph. D. 2020. Print. xxiii, 284 p. (Unpublished).