Abstract: A truck shell is provided that is able to incorporate a variety of retractable, convertible and/or removable rooftops. The truck shell is designed to be able to drive with or without the rooftop component installed, and with or without the rooftop component in the open or closed position. The truck shell comprises a frame structure which enables its use without a rooftop component installed while retaining structural integrity, and also enabling the use of a number of different structures and styles of rooftops.

Abstract: An oscillation apparatus, system, and method are provided for creating pulsing pressure waves in a fluid flow that can be used to open and close flow paths for fluid flow in a reservoir, mixing a fluid, or keeping a particulate suspension homogenous in a fluid. The system includes an oscillation apparatus including a motor and an oscillating valve that rotates at a particular speed and frequency while a pump circulates a fluid through the oscillation apparatus, which outputs the fluid in a pulsing wave. The apparatus or system may further include one or more sensors and a control system that control the speed and the frequency of the rotation of the oscillating valve.

Abstract: Apparatus is provided having one or more SWEGS that may be configured to heat air in a draft power tower arrangement. In a closed loop, cold fluid may be pumped into the SWEGS and heated to a temperature in a range of e.g., 100° C.-300° C., and hot fluid pumped out of the SWEGS. This fluid flows through a heating element (e.g., a radiator or specially designed heat exchanger) that heats the air in the draft power tower arrangement.

Abstract: Apparatus includes a heat extraction system (SWEGS) in combination with some further apparatus for implementing some further functionality, e.g., associated with cooling/heating, remediation, mining, pasteurization and brewing applications.

Abstract: In combination, an electrical generation system has a condenser configured to receive a condenser cooling fluid for cooling the condenser and provide the condenser cooling fluid for re-cooling; a cooling reservoir receives a re-cooled condenser cooling fluid and provides the re-cooled condenser cooling fluid as the condenser cooling fluid; and a multiphase cooling nest receives in a first cooling phase the condenser cooling fluid; and either provides a first cooling phase fluid as the re-cooled condenser cooling fluid to the cooling reservoir for recirculating to the condenser, or provides the first fluid cooling fluid for further cooling by the multiphase cooling nest, based on the temperature of the first stage cooling fluid.

Abstract: Apparatus is provided having one or more SWEGS that may be configured to heat air in a draft power tower arrangement. In a closed loop, cold fluid may be pumped into the SWEGS and heated to a temperature in a range of e.g., 100° C.-300° C., and hot fluid pumped out of the SWEGS. This fluid flows through a heating element (e.g., a radiator or specially designed heat exchanger) that heats the air in the draft power tower arrangement.