Harvesting Electrical Energy Using Alternator Installed in Rolling Store Side Wheel

Abstract

Rolling stores in the Philippines traditionally relied on carabaos (water buffalo), but nowadays, vendors operate these stores either on foot or using motorcycle. These mobile stores offer a wide range of products, including brooms, shoes, and food. To facilitate the generation of electrical energy for these stores, a system has been implemented wherein the gear is mounted on the side wheel of the rolling store. A chain connects the alternator to the side wheel gear allowing the rotational motion of the side wheel to produce electricity and charge the battery. This system has a power output of 206 VA providing sufficient energy to power three 10 W light bulbs, charge two mobile phones, and operate an electric fan and television simultaneously. In terms of the battery charging, a 12V, 80Ah battery can be fully charged in approximately 6.67 hours while travelling at a speed of 40km/hr. On the other hand, the battery discharges over a period of 89.320 hours. The project total cost amounts to P13, 510, with estimated annual expenditure of P20, 183.59 on gas consumption. As a result, every three days, the project saves P170 in battery charging expenses. Moreover, during the first year of implementation, an estimated savings of P6, 973.49, is projected. This innovative approach to powering rolling stores demonstrates the potential for sustainable energy usage in mobile retail operations benefiting the vendors.