Project Name : Energy harvesting
Theme Name : Natural Resource & their Conservation
Participant:
a) Adarsh Poddar
b) Shubh Jaju
Introduction:
Energy harvesting also known as power harvesting or energy scavenging is the process by which energy is derived from external sources (e.g., solar, thermal energy, wind energy, salinity gradients, and kinetic energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.
Energy harvesters provide a very small amount of power for low–energy electronics. While the input fuel to some large-scale generation costs money (oil, coal, etc.), the energy source for energy harvesters is present as ambient background and is free. For example, temperature gradients exist from the operation of a combustion engine and in urban areas; there is a large amount of
electromagnetic energy in the environment because or radio and television broadcasting.
Scientific Principle:
Conversion and Accumulation of Energy, Energy Harvesting is the process by which energy is derived from external sources like:
Ambient Radiation Sources
Photo Voltaic
Piezo Electric
Pyro Electric
Thermal
Magnetic
Electrostatic
Bio-fuels
Bio-Energy Harvesting
Unique Features: One driving force behind the search for new energy harvesting devices is the desire to power sensor networks and mobile devices without batteries. Energy harvesting is also motivated by a desire to address the issue of climate change and global warming.
Applications and Future Scope: Much of the effort in energy harvesting has focused on the transducer, to determine how to obtain as much energy as possible from a given energy field. As the technology matures the focus will shift to the new application enabled by energy harvesters.
Low power electronics: New low power electronics will enable applications that were previously out of bounds. Large microelectronics companies such as. Texas Instruments are developing specialised power conditions chips that minimise power losses and make it easier for energy harvesting to be used as a source of power.
Smart cities: Energy harvesting powered wireless will become ubiquitous, providing ever more valuable information that is used to enable improvement to transport, health, and infrastructure.
Biological systems: Power from breathing or blood pressure could power ultra low power medical implants. Researchers at Southampton University hospital have developed an experimental pace maker that is able to draw 1/3 of the power if requires from blood flow.
Falling costs: The cost of energy harvesting will fall dramatically if it makes its way into mass market consumer applications. Then it will be possible for industry applications to make wider use of energy harvesting enabled devices by piggy backing on the development work of others.
Name of the School: Tapti Valley International School, Surat
