Convection-driven power generator

A convection-driven power generator comprising:

• a flow intake configured to supply fluid to the generator;
• a flow duct having a duct inlet and a duct outlet wherein the duct outlet is spaced downstream from the duct inlet along the flow duct, the duct inlet being fluidly coupled to the flow intake;
• a heating chamber fluidly coupled to the duct outlet so as to receive fluid from the duct outlet, the heating chamber comprising an external wall configured to transmit light radiation incident thereon such that fluid within the heating chamber is heated by the transmitted light radiation;
• a flow exhaust fluidly coupled to the heating chamber and configured to exhaust fluid heated by the heating chamber from the heating chamber;
• a turbine arranged within the flow duct, downstream of the flow intake, and exposed to fluid flow through the flow duct such that when fluid flows through the flow duct the turbine is caused to rotate by the fluid flow;
• and
• at least one lens element configured to focus the light radiation transmitted by the external wall within the heating chamber;
• wherein the generator is a light-electrical power generator configured to convert incident light radiation into electrical power, and
• wherein the heating chamber is an oblate toroid in shape, wherein an annulus of the toroid is arranged along the toroid axis of the heating chamber, and wherein the heating chamber extends circumferentially around the flow duct and the flow duct extends out of the heating chamber.