Abstract: Disclosed embodiments include solar power receiver tubes for a concentrated solar power receiver having a tube wall that is optically transparent to solar energy. Concentrated solar power systems and methods featuring the use of optically transparent receiver tubes are also disclosed. The optically transparent receiver tube may include a transparent tube wall fabricated from at least one of the following materials; single crystal alumina (synthetic sapphire), aluminum oxynitride, spinel, quartz or magnesium aluminum oxide.

Abstract: Concentrating solar power (CSP) systems and methods are disclosed featuring the use of a solid-liquid phase change heat transfer material (HTM). The systems and methods include a solar receiver configured to receive concentrated solar flux to heat a quantity of the solid HTM and cause a portion of the solid HTM to melt to a liquid HTM. The systems and methods also include a heat exchanger in fluid communication with the solar receiver. The heat exchanger is configured to receive liquid HTM and provide for heat exchange between the liquid HTM and the working fluid of a power generation block. The heat exchanger further provides for the solidification of the liquid HTM. The systems and methods also include a material transport system providing for transportation of the solidified HTM from the heat exchanger to the solar receiver.

Abstract: Support system for auxiliary power unit which sustains an auxiliary power unit (1) of an aircraft to a fixed structure (2) belonging to a compartment of the auxiliary power unit (6) of said aircraft, made in a high mechanical strength material, and with high resistance to ignition, which comprises at least three fittings (3, 4, 5) of a substantially cylindrical shape, said fittings (3, 4, 5) being able to be hollow, and each one of them presenting a first end (7) comprising means of attachment of the support system (8) to the fixed structure (2) and a second end (9) comprising means of securing of the support system (8) which are joined to the auxiliary power unit (1) in the periphery of the extension of said auxiliary power unit (1), with at least a first forward fitting (4) and a second forward fitting (5) being located in the forward part of the auxiliary power unit (1), and at least one rear fitting (3) being located in the rear part of the auxiliary power unit (1).