A method for discharging exhaust gas from a gas turbine wherein a number of sectors, position, and angle at the center of at least one sector of a peripheral opening capable of forming an area for reingestion of a primary flow into an engine bay are determined by correlation of interactions between secondary cooling flows and the primary flow, from following behavior parameters: air gyration and speed at an inlet of a pipe, geometry of an exhaust stream, routing of the secondary cooling flow for cooling the engine bay, and a geometry and position of inlets of the secondary flows. The peripheral opening is then closed over the identified at least one angular sector. The method prevents backflow of hot primary air into the peripheral opening formed between a pipe and an ejector of the exhaust stream of a gas turbine.

The invention provides a microdroplet- or bubble-producing device that does not require separate through-holes for different liquid droplet/air bubble-producing flow channels. The droplet-producing flow channels are configured in a three-dimensional manner unlike in a conventional device where they are configured in a two-dimensional plane, and therefore the flow channels can be provided in a more high-density configuration than the prior art. In the microdroplet/bubble-producing device comprising slit(s) and the row of the plurality of microflow channels, the slit(s) is/are a continuous phase supply slit, a dispersion phase supply slit and a discharge slit, the plurality of microflow channels are configured so that the ends of the slit(s) and the two supply ports on both sides or the supply port and discharge port on either side are mutually connected, and at the sites of connection between the microflow channels and the slit(s), the dispersion phase undergoes shear with the continuous phase flow as the driving force, producing droplets or air bubbles of the dispersion phase, which are recovered from the discharge port.

A mixing chamber in which a first liquid comes into contact with a second liquid, and a gas injection device designed to inject a gas into the mixing chamber, wherein the gas injection device includes: a gas source to provide the gas at a predetermined pressure, and a metering unit to limit the gas provided by the gas source to a predetermined flow rate, wherein the metering unit is in contact with the mixing chamber on a gas outlet side of the metering unit, wherein the gas outlet side of the metering unit includes an elongated gap, wherein the gas passes out of the metering unit into the mixing chamber via the elongated gap, and wherein the gas passes out of the metering unit into the mixing chamber.

The invention relates to apparatus and a process for mixing a gas/vapour with a process liquid comprising a material and a carrier liquid. The apparatus comprises a passage (10) having an inlet (14) and an outlet (16) for a process liquid comprising the material and an inlet (24) for supersonic steam which is configured such that the angle of impingement of the steam on the carrier liquid can be varied.

The invention relates to apparatus and a process for mixing a gas/vapour with a process liquid comprising a material and a carrier liquid. The apparatus comprises a passage (10) of polygonal cross section having an inlet (14), an outlet (16) for a process liquid comprising the material, and a nozzle (24) for introducing supersonic gas/vapour at a mixing zone (42) in a single plane.

The invention relates to apparatus and a process for mixing a gas/vapour with a process liquid comprising a material and a carrier liquid. The apparatus comprises a passage (10) having an inlet (14), an outlet (16) for a process liquid comprising the material, and an inlet (24) for introducing supersonic steam at a mixing zone (42). The profile of the mixing zone (42) can be varied to optimise mixing.

A direct contact steam injection heater that allows shear to be adjusted by modifying a lateral position of a movable combining tube. The movable combining tube includes a rack on an outer surface of the combining tube that engages a movable lever arm of an adjustment mechanism. The pivoting movement of the lever arm moves the combining tube in a lateral direction to adjust the shear in the product being heated. The combining tube is supported in a housing by a pair of lateral bushings and a pair of end seals prevent product from entering the combining tube housing. The lever arm is coupled to a worm gear shaft such that rotation of the worm gear shaft creates pivoting movement of the lever arm and lateral movement of the combining tube.

A dust collecting device is provided. The dust collecting device includes a particle separation component, an airflow output component and a particle collection component. One side of the particle separation component extends outward to form a first gas input portion, one end of the particle separation component extends outward to form a first gas output portion, and another end of the particle separation component extends outward to form a foreign matter outlet portion. One side of the airflow output component extends outward to form an airflow inlet portion, one end of the airflow output component extends outward to form a second gas output portion, and another end of the airflow output component extends outward to form a second gas input portion. The second gas output portion is connected to the first gas input portion. The particle collection component is connected to the foreign matter outlet portion.

A reductant delivery system configured to supply a reductant into an exhaust stream in an exhaust treatment system is presented. The reductant delivery system comprises: an evaporator configured to mix the reductant with the exhaust stream flowing through the evaporator; a reductant doser configured to provide the reductant in fluid form to a tube arrangement; and the tube arrangement configured between the reductant doser and at least one evaporating surface of the evaporator to receive the reductant in fluid form from the reductant doser and to deliver the reductant in fluid form at the at least one evaporating surface, such that the reductant is distributed as a liquid wall film on the at least one evaporating surface.

A puncture repair kit for repairing a puncture on an object includes a container containing a puncture repair fluid, a compressed air source for supplying compressed air, and a mixing device configured to be attached to the container to produce a mixture of the puncture repair fluid and the compressed air. The mixing device includes a mixing chamber for producing the mixture, a first inlet flow path configured to be connected to the compressed air source, a second inlet flow path for supplying the puncture repair fluid from the container to the mixing chamber, and an outlet flow path for discharging the mixture from the mixing chamber. The first inlet flow path includes a first opening for supplying the compressed air to the container, and a second opening for supplying the compressed air to at least one of the mixing chamber and the second inlet flow path.