Abstract: Methods and systems for conducting batch multi-effect distillation are disclosed. A multi-effect distillation system and one or more isolation devices are provided. A feed stream, consisting of water and a solute, is passed from a feed source into a brine side of the plurality of heat exchangers. The feed source is isolated from the plurality of heat exchangers by closing the one or more isolation devices. A first of the plurality of heat exchangers is heated by the heat source. A steam stream and a brine concentrate stream are produced in all but a last of the plurality of heat exchangers. A condensate stream from the steam stream is produced in all but the first of the plurality of heat exchangers. A warmed feed stream is produced in the last of the plurality of heat exchangers.

Abstract: A trailer hitch is disclosed. A weight distribution hitch includes an attachment member with a forward end which attaches to a vehicle and a rearward end which pivotally connects to a trailer. The invention also includes a moment bar which attaches to the attachment member on one and tension mechanism on the other. The tension mechanism is mounted on a frame of the trailer and provides an upward force on the moment bar which imposes a moment on the attachment member. Center lines of the attachment member, moment bar, and the vehicle are all in a vertical plane. The invention may also include an aperture disposed in the moment bar through which the tension mechanism passes.