These include compression springs, which store energy through compression, and tension springs, which store energy through stretching. Each type has strengths and weaknesses depending on load. . The present research examines the possibility of using conventional steel springs as a form of grid-scale mechanical energy storage. Springs were chosen as a potential energy storage solution as they offer promising energy density and can be scaled with modular design, allowing the system to meet. . Field of the Invention This invention relates to an energy storage device that stores energy by spring torsion, and more particularly to an energy storage device that accepts various sources of energy and converts it into spring compression energy for storage to release the spring force when needed. . In this paper kinetic energy storage and recovery system using torsion spring is analysed, the mechanism required to transmit the energy from and to the spring is designed, then its efficiency is tested and amount of fuel saved when this system is adapted to any vehicle for every time the brake is. . The core advantages of spring energy storage systems include 1. Sustainability with low environmental impact, 4. Cost-effective in comparison to other storage systems. A spring return actuator operates on a principle that's remained unchanged for decades: compress a spring during normal operation, then release that energy when needed.
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