Abstract: A feather seal arrangement for a ceramic matrix composite (CMC) blade outer air seal (BOAS) of a turbine engine includes a CMC BOAS segment having a specific geometry and a first feather seal. The CMC BOAS segment includes a shoe having a flowpath side, an opposing non-flowpath side, and first and second matefaces extending axially between the flowpath side and the non-flowpath side from an upstream leading edge to a downstream trailing edge. One or more support flanges extend substantially transverse from the non-flowpath side. A geometry of the CMC BOAS segment allows a substantially flat first feather seal surface to be disposed on the non-flowpath side adjacent and substantially transverse to the first mateface. A first feather seal is disposed atop the non-flowpath side on the first feather seal surface and extends to an adjacent feather seal surface of an adjacent CMC BOAS segment.

Abstract: An apparatus for covering a water container having an open top and treating a source water therein. The apparatus has one or more dividing walls mountable to an interior space of the water container for partitioning it into multiple water-treatment zones, and a cover mountable to at least a portion of the open top of the water container above the one or more dividing walls. Each dividing wall has or forms one or more openings for directing the source water from one water-treatment zone to the next. The cover has one or more vaulted cover sections each defining a gas chamber above the dividing walls. Each cover section has a condensation surface in the corresponding gas chamber for condensing a steam evaporated from the source water to clean water, and at least one water-collection channel coupled to at least one side of the condensation surface for collecting the condensed clean water.