Solar thermal-radiation, absorption and conversion system

A highly light-transparent radiant heat-receiving fluid containment constructed of a hard and high-temperature-resisting glass-like material having at least one first highly light-transparent wall and one second highly light-reflecting wall, being spaced substantially apart from each other to form a fluid passage between them

• and being exposed substantially perpendicular to direct or indirect and focused thermal radiant emission from the sun,
• comprising a temperature-inert, thermal radiation-absorbing fluidic heat-transfer compound of a certain desired optical density, having a high boiling point and comprising a quantitative magnitude of solid, dull-black, non-light-reflecting particles of colloidal size, per unit area, times a certain unit fluid depth to compliment said fluidic compound's desired optical density and being homogeneously suspended within said heat-transfer fluid, circulating through said transparent radiation receiver containment
• to be heated directly from within through the basic heat-transfer process of radiation,
• wherein the thermal radiation emitted from the sun penetrates through said transparent radiation receiver containment to strike those particles of colloidal size suspended homogeneously within said circulating, radiant heat-absorbing, heat-transfer fluid, partially direct and partially by means of reflection from said second light-reflecting wall
• for the purpose of heating that radiant heat-absorbing fluid and to evacuate said absorbed and stored radiant heat within said fluidic compound for further conversion into either mechanical or electrical power, or for the purpose of general heating, domestic and industrial.