NOVELTY - The system (200) has a set of photovoltaic cells (251-254, 257) e.g. thin-film cells, positioned at a set of predetermined positions in an enclosed space (210) e.g. computer room, for converting radiation in the space into electric power. An electric circuit utilizes the electric power to perform a function associated with the space. The electric circuit comprises an electric component that is physically associated with the space to cool a portion of the space and circulate air in the space. The electric circuit comprises a battery (260) to be charged by the electric power.    USE - System for converting energetic radiation i.e. infrared radiation, into electrical energy to power an electrical component e.g. heat dissipation device such as ventilation or exhaust fan, air conditioner, and water-cooling system, that is utilized to cool, ventilate or expel heat emitted by a machine e.g. electronic device such as computer, from an enclosed space e.g. room (all claimed) such as computer room. Can also be used for High-fidelity (hi-fi) system, and TV, and enclosed space such as indoor space, hall, office, computer data center, space inside an apartment, house, warehouse, building, space enclosed or partially enclosed within walls, a ceiling and a floor.    ADVANTAGE - The electrical component powered by the photovoltaic cells operate to dissipate heat from the enclosed space easily and effectively by using photovoltaic panels located at suitable locations within the enclosed space at multiple inner surfaces of a housing of a machine in vicinity of components of machines to efficiently absorb a significant portion of radiation so as to maintain the machines and the components of the machines in the enclosed space at a desired operational temperature. The electrical component is connected to an additional power source such as electric grid to ensure continuous supply of electric power to the machine regardless of relative power contributions of the photovoltaic panels and a battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a system for converting energetic radiation emitted in an enclosed space into electrical energy.    System for converting energetic radiation emitted in enclosed space into electrical energy (200)    Enclosed space (210)    Photovoltaic cells (251-254, 257)    Battery (260)    Inverter (270)