The results obtained show that solar sprayer was effective and will be useful in rural areas where there is no constant power supply. The system is incorporated with an energy bulb and charging kit to light up the farmyard and for the operator to charge his/her phone. | Design fabrication and testing of a movable solar operated sprayer for farming operation International Journal of Mechanical Engineering and Technology IJMET Volume 11 Issue 03 March 2020 pp. 6-14. Article ID IJMET_11_03_002 Available online at http ijmet JType IJMET amp VType 11 amp IType 3 ISSN Print 0976-6340 and ISSN Online 0976-6359 IAEME Publication DESIGN FABRICATION AND TESTING OF A MOVABLE SOLAR OPERATED SPRAYER FOR FARMING OPERATION Issa Department of Mechanical Engineering Kwara State University Malete Kwara State Nigeria Abdulmumuni B Azeez Okpara Fanifosi and Ologunye Department of Mechanical Engineering Technology Federal Polytechnic Ede Osun State Nigeria Corresponding author ABSTRACT Famers do spray seeds fertilizers pesticides herbicides etc. to protect crops from different insects pests diseases and have good harvests. Hand and fuel operated spray pumps are the most common sprayer used in Nigeria. The sprayer causes user fatigue due to excessive bulky and heavy construction a user can t use it for more than five 5 hours without getting tired the fuel sprayer is expensive to maintain emits carbon dioxide and harmful to our environment. In this study a movable solar operated sprayer for the farming operation was designed and fabricated to overcome these difficulties. The system operates in both direct mode and indirect mode. In the direct mode the sprayer is operated from the electricity generated by 50W solar panel mounted on a movable frame and in the indirect mode it is operated on stored electrical energy in the lead-acid DC battery 12 V 12 Ah . Priming diaphragm pump of 10W or mini DC reciprocating cycle motor of 5W is used to generate the required operating pressure to spray the liquid pesticide formulations. The capacity of the storage tank is 20 liters for uninterrupted operation of minutes with the discharge rate of L min through the electric flexible mists high-pressure multiple .