Abstract: A floating pump assembly including a compact floatation assembly structured to float on a body of water and supporting a flow pump housing having an inlet, outlet and fluid drive assembly being submerged and wherein at least the outlet is oriented in a predetermined, preferably horizontal orientation during operation and activation. A power assembly is supported on the floatation assembly and is drivingly connected to the fluid drive assembly for powered operation thereof. The predetermined orientation of at least the outlet and particularly the direction of discharge of water issuing from the outlet substantially is such as to eliminate or at least minimize the tendency of the floatation device to become disoriented or unstable at least in terms of being increasingly submerged into a deeper position within the body of water upon activation and operation of the floating pump assembly.

Abstract: A combustor liner for a gas turbine includes a substantially cylindrical body having a plurality of raised circular ribs arranged in an array on an outside surface of the combustor liner, each rib defining an enclosed are on the outside surface of the liner, forming a dimple or bowl that is sufficient to form vortices for fluid mixing in order to bring about heat transfer enhancement by both turbulated effect and dimpled effect.

Abstract: The invention relates to a heating system, particularly for motor vehicles, in which a heat exchange arrangement operating in the manner of a heating member can be thermally coupled by means of a hydraulic heat transfer circuit, particularly a water circuit, to a first heat source, in particular an internal combustion motor serving to drive the motor vehicle, and also to a second heat source, in particular a burner operable independently of the first heat source, wherein a control arrangement can be changed over, in dependence on the operating state of a first pump allocated to the first heat source, between a first state, in which the heat transfer medium or at least a greater portion of it is conducted over both heat sources, and a second state, in which the heat transfer medium is conducted by a further, hydrodynamic pump, only or preponderantly over the second heat source.

Abstract: An electro-osmotic pump, for transporting aqueous solutions in micro-fluidics, has a tubular-shaped pumping section which includes a pump tube that is connected in fluid communication with an extension tube. A thread of silica fibers is positioned in the lumen of the pump tube, and an aqueous solution that will interact with the thread is introduced into the pump tube lumen to charge the aqueous solution. In operation, a voltage potential is selectively applied between the pump tube and the extension tube to establish a ground-potential-ground electric field along the pumping section. This creates a force on the charged aqueous solution that moves it through the pump tube and, consequently, also moves fluid through the extension tube. Various embodiments of the electro-osmotic pump are envisioned, including the serial connection of several pumping sections, for use as valves, switches or pumps.

Abstract: A swash plate compressor provided with a housing internally defining and forming cylinder bores, a crank chamber, a suction chamber, and a discharge chamber; pistons accommodated in the cylinder bores to be able to reciprocate in them; a drive shaft driven by an external drive source and supported by the housing; a swash plate synchronously rotatably supported with respect to the drive shaft; and shoes at the front and rear of the swash plate for driving the pistons; wherein the shoes are mainly comprised of a magnesium-based material.

Abstract: A pump has a housing plate having a front face and a back face, a housing can fixed to the plate and defining a chamber on the back face thereof, a bearing sleeve in the can fixed to the plate and extending rearward from the back face thereof along an axis, and a rotor shaft extending axially through the sleeve and having a front end and a rear end. Bearings support the rotor shaft in the sleeve for rotation therein about the axis. The shaft has an outer surface spaced a predetermined inner radial distance from an inside surface of the bearing sleeve. An impeller is carried on the rotor-shaft front end in a pump chamber at the front face of the housing plate. A rotor body fixed to the shaft rear end extends axially forward in the can around the bearing sleeve. The rotor body has an outer surface spaced a predetermined outer radial distance from an inside surface of the can. The inner radial distance is substantially smaller than the outer radial distance.

Abstract: A plant (1) includes, an air distillation apparatus (4) having at least one outlet (25) for a nitrogen-rich fluid and an outlet (32) for a product to be delivered in the liquid state and a gas turbine unit (3) having a combustion chamber (17) and an electricity-generating turbine (18), the intake of which is connected to an outlet of the combustion chamber. An expander (13) for expanding a nitrogen-rich fluid in order to generate refrigerating power allowing the liquid product to be delivered, the air distillation apparatus being connected in parallel to the expander (13) and to the intake of an electricity-delivering turbine in order to feed them with at least one nitrogen-rich fluid. Control elements (41,42) are provided for controlling the flow rates of the nitrogen-rich fluid streams sent to the expander (13) and to the electricity-generating turbine (18), respectively, and determination elements (40) for determining the electrical power to be generated by the electricity-generating turbine (18).

Abstract: The present invention is directed to a combustor/turbine successive dual cooling arrangement in which the combustor has a one-piece hot combustor wall and front and rear cold combustor walls, and cooling air is forced under pressure through perforations in the cold combustor walls and impinges on the annular front and rear sections of the hot combustor wall for the backside cooling of the hot combustor wall. The exhaust combustor backside cooling air is directed to gain access to the hot end of the engine, that is, the turbine section, to cool the turbine components. The combustor/turbine successive dual cooling arrangement according to the present invention enables all the air typically used to cool the hot end of the engine downstream of the combustor, to be used as combustor backside cooling as well, to significantly reduce the amount of air needed for combustor and turbine cooling.

Abstract: In a method for assessing pulmonary stress, a flow of respiratory gas is supplied to the lungs of a subject, an ensuing pressure is measured in relation to time and the pressure-time relationship is analyzed. In this analysis, the profile of the pressure-time relationship is determined. In summary, the profile is straight when no stress is present, is convex when there is a risk for over-distension, and is concave when alveolar units are opened up. Implemented in a breathing apparatus the method can be used to assist an operator in diagnostic and therapeutic considerations in relation to a patient.

Abstract: An exhaust nozzle includes an annular exhaust duct for discharging exhaust from an aft end thereof. Circumferentially adjoining chevrons extend from the duct aft end around only an arcuate portion thereof leaving a plain arcuate shelf between terminal ones of the chevrons. Each of the chevrons has a triangular configuration and a compound arcuate contour both circumferentially and axially.

Abstract: A motor-driven pump with a plurality of impellers, includes a pump housing provided on an electric motor, and an impeller unit provided in an inner space of the housing, the housing having two fluid inlet port regions on two sides near and away from the motor in a longitudinal direction of an output shaft of the motor, and having one fluid discharge port region between the inlet port regions, and the unit including a pair of impellers having a partition wall fixed to the output shaft, directing to the discharge port region, and partitioning the inner space into two portions near and away from the motor, and a pair of blade groups provided on both sides of the partition wall.