Abstract:
Sun is the greatest source of almost all kind of energies. The amount of energy transmitted by sun to planet earth in one day is capable of meeting the current energy needs of the entire world for next 27 years [1]. This entire energy transmitted is in various forms and different efforts have been undertaken in the world so far to tap this tremendous sun’s energy. Approximately 90% of material experts are tapping the particle nature of Sunlight using solar cells. Every day passes with a technological breakthrough in some efficient material discovery/invention for making more and more efficient solar panels. Despite of all these efforts, commercial efficiency of solar cell is maximum 40%.While material engineers and researchers claim solar cells approach of harvesting the suns energy to be the best, electrical engineers and experts shall not stop exploring their domain, because an innovational solution of utilizing the sun’s energy in far more efficient and economical manner is proposed.
Harvesting the suns energy using particle nature (solar cell) limits the efficiency of energy converted to very low level as compared to wave nature (solar antenna) of solar radiations if received on solar antennas and then converted into commercial electricity.
Among the entire solar spectrum, Infra-Red (IR) heat radiations have been selected to generate electricity and render cooling effect. IR is the second most energy abundant portion of solar spectrum and is present both at day and night.
