Abstract: A molten salt central receiver arrangement for transferring heat from panels to a molten salt that flows through the panels. A control device allows to change the condition of at least one of the panel arrangements of the molten salt central receiver arrangement depending on at least an operating parameter of at least one panel and/or depending on an environment signal that characterizes the actual or forecast available heat for the heat transfer to the molten salt. In normal operation passes, each having one or more panels, are connected in series such that molten salt flows in a serpentine or alternating way upward and downward through subsequent passes. In a parallel flow condition, molten salt may flow upward through all of the panels in parallel. In a drain condition, the molten salt is forced out of one or more panels and replaced by compressed air.

Abstract: A molten salt central receiver arrangement for transferring heat from panels to a molten salt that flows through the panels. A control device allows to change the condition of at least one of the panel arrangements of the molten salt central receiver arrangement depending on at least an operating parameter of at least one panel and/or depending on an environment signal that characterizes the actual or forecast available heat for the heat transfer to the molten salt. In normal operation passes, each having one or more panels, are connected in series such that molten salt flows in a serpentine or alternating way upward and downward through subsequent passes. In a parallel flow condition, molten salt may flow upward through all of the panels in parallel. In a drain condition, the molten salt is forced out of one or more panels and replaced by compressed air.

Abstract: A cover plate removal tool including an elongate solid unit having a hollow longitudinal track having an end portion including a cylindrical recess having an axis transverse to a longitudinal axis of said track. The cover plate removal tool also includes a plurality of solid pegs securable perpendicular within said track. The pegs are slidable back and forth within said track. The removal tool includes a solid cylindrical element having a lower portion proportioned to fill said cylindrical recess and further proportioned for complemental fit within said track.

Abstract: A method and system for filtering Internet content retrieved from an Internet computer network (110) by a remote Internet Service Provider ("ISP") server (100) and forwarded to a local client computer (10). The method and system matches at least one filtering scheme (121), such as an inclusive or exclusive filter, and at least one set of filtering elements (120), such as a list of allowed or excluded sites, to each Internet access request generated at the local client computer (10). The filtering scheme is implemented on the ISP server (100).