Abstract: An intravascular catheter for peri-vascular and/or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and/or nerve fibers in the outer layer or deep to the outer layer of the vessel, or in prostatic tissue. The system may also include a means to limit and/or adjust the depth of penetration of the ablative fluid into and beyond the tissue of the vessel wall. The catheter may also include structures which provide radial and/or lateral support to the guide tubes so that the guide tubes expand uniformly and maintain their position against the interior surface of the vessel wall as the sharpened injection needles are advanced to penetrate into the vessel wall.

Abstract: A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

Abstract: The present invention relates to a fin device for heat exchangers having corrugated fins, which extend along a main direction and comprise fin walls with louvres and fin folds. With respect to the corrugated fins, fin walls that are adjacent in the main direction are each interconnected via a fin fold, while in addition, fin walls that are adjacent in the main direction each delimit between them a fluid channel. Furthermore, the corrugated fins are lined up one behind the other in a transverse direction extending transversely to the main direction, so that the fluid channels of the corrugated fins lead into one another. It is substantial that corrugated fins that are adjacent in the transverse direction are arranged offset to one another in the main direction by a spacing referred to as fin offset and are fixed to one another in that their adjacent fin folds are directly and in particular integrally connected to one another.

Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.

Abstract: A tube body for a heat exchanger includes an outer cover and intermediate walls arranged in the outer cover, which within the outer cover limit passages that are separated from one another in a width direction and can be flowed through in a longitudinal direction. An increased stability of the tube body with reduced weight at the same time is obtained in that a wall thickness running in the width direction of at least one inner intermediate wall, which is arranged between in the width direction outer intermediate walls, that is greater than the wall thickness of the respective outer intermediate wall. In addition, a heat exchanger having such a tube body, a motor vehicle and a building having such a heat exchanger are provided.

Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.

Abstract: Systems, methods, apparatuses and devices provide an integrated display module or apparatus including a Liquid crystal assembly with highly integrated components including display driver circuitry and backplane circuitry.

Abstract: A heat exchanger (1) for thermally coupling a first fluid to a second fluid so as to transfer heat and in a fluidically separate manner includes a securing assembly (8) of two cover parts (9) and at least one, preferably a plurality of guide parts (11), through which duct tubes (5) of the heat exchanger (1) pass. The duct tubes (5) extend inside a housing tube (2) along the longitudinal axis of the housing tube (2). The first fluid passes through the housing tube (2) outside of the duct tubes (5), and the second fluid passes through the duct tubes (5). The duct tubes (5) may have circular or flattened cross-sections.

Abstract: A heat exchanger system for transferring heat between two fluids that includes at least two heat exchangers each having a top and bottom. The heat exchangers include a fluid collector, multiphase distributor, and a plurality of multi-duct tubes coupled therewith. One fluid flows around the multi-duct tubes, while the other fluid flows within the multi-duct tubes, with heat transfer occurring via a fluidically separate coupling of the fluids. One heat exchanger is configured with an upward flow design, for heating, in which the two fluids flow opposite to gravity and parallel to each other through the heat exchanger (bottom to top). The other heat exchanger is configured with a downward flow design, for cooling, in which one fluid flows opposite to gravity through the heat exchanger (bottom to top) and the other fluid flows anti-parallel to the one fluid with gravity through the heat exchanger (top to bottom).

Abstract: A heat exchanger (1) includes a fluid collector (2) for receiving fluid, a multiphase distributor (3) for distributing fluid, a first flow path (4), and a plurality of multi-duct tubes (6), which each have a duct tube longitudinal axis (7) and which each lead into the multiphase distributor (3) and into the fluid collector (2) by forming an orifice (8, 9). A second flow path (5) leads respectively through the multi-duct tubes (6), the fluid collector (2), and the multiphase distributor (3), wherein the multi-duct tubes (6) extend through the first flow path (4) for the first fluid, so that the first fluid can flow around and the second fluid can flow through the multi-duct tubes (6).

Abstract: A heat exchanger (1) for thermally coupling a first fluid to a second fluid so as to transfer heat and in a fluidically separate manner includes a securing assembly (8) of two cover parts (9) and at least one, preferably a plurality of guide parts (11), through which duct tubes (5) of the heat exchanger (1) pass. The duct tubes (5) extend inside a housing tube (2) along the longitudinal axis of the housing tube (2). The first fluid passes through the housing tube (2) outside of the duct tubes (5), and the second fluid passes through the duct tubes (5). The duct tubes (5) may have circular or flattened cross-sections.

Abstract: A heat exchanger (1) includes a fluid collector (2) for receiving fluid, a multiphase distributor (3) for distributing fluid, a first flow path (4), and a plurality of multi-duct tubes (6), which each have a duct tube longitudinal axis (7) and which each lead into the multiphase distributor (3) and into the fluid collector (2) by forming an orifice (8, 9). A second flow path (5) leads respectively through the multi-duct tubes (6), the fluid collector (2), and the multiphase distributor (3), wherein the multi-duct tubes (6) extend through the first flow path (4) for the first fluid, so that the first fluid can flow around and the second fluid can flow through the multi-duct tubes (6).

Abstract: A tube body for a heat exchanger includes an outer cover and intermediate walls arranged in the outer cover, which within the outer cover limit passages that are separated from one another in a width direction and can be flowed through in a longitudinal direction. An increased stability of the tube body with reduced weight at the same time is obtained in that a wall thickness running in the width direction of at least one inner intermediate wall, which is arranged between in the width direction outer intermediate walls, that is greater than the wall thickness of the respective outer intermediate wall. In addition, a heat exchanger having such a tube body, a motor vehicle and a building having such a heat exchanger are provided.

Abstract: An evaporator for an air conditioning system includes an inlet manifold, an outlet manifold and a plurality of refrigerant tubes. The refrigerant tubes hydraulically communicate with the inlet manifold and the outlet manifold for a refrigerant flow. The inlet manifold includes a distributor tube with a plurality of orifices for equally aliquoting two phase refrigerant inside the inlet manifold. A mandrel is provided inside the distributor tube and a portion of the distributor tube with the inserted mandrel is flattened and bent toward an inlet port of the distributor tube for fitting the distributor tube within the inlet manifold. The mandrel is inserted into the distributor tube for preventing the distributor tube from collapsing when the distributor tube is flattened and bent.

Abstract: An evaporator for an air conditioning system includes an inlet manifold, an outlet manifold and a plurality of refrigerant tubes. The refrigerant tubes hydraulically communicate with the inlet manifold and the outlet manifold for a refrigerant flow. The inlet manifold includes a distributor tube with a plurality of orifices for equally aliquoting two phase refrigerant inside the inlet manifold. A mandrel is provided inside the distributor tube and a portion of the distributor tube with the inserted mandrel is flattened and bent toward an inlet port of the distributor tube for fitting the distributor tube within the inlet manifold. The mandrel is inserted into the distributor tube for preventing the distributor tube from collapsing when the distributor tube is flattened and bent.

Abstract: A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

Abstract: A method of pumping an oilfield fluid from a well surface to a wellbore is provided that includes providing a clean stream; operating one or more clean pumps to pump the clean stream from the well surface to the wellbore; providing a dirty stream including a solid material disposed in a fluid carrier; and operating one or more dirty pumps to pump the dirty stream from the well surface to the wellbore, wherein the clean stream and the dirty stream together form said oilfield fluid.

Abstract: Disclosed is a live bait keeper having a cornerless interior and dynamic flow of ambient water through it for freshening the water and protecting bait against harm when the holder is in water. The holder has a hollow, disc-shaped keeper body having forward and aft ends and cornerless interior space. The keeper is buoyant. A top hatch accesses the interior where bait is held. In use, ports on the top-portion of the keeper vent air and water from the interior, and bottom-ports disposed toward the forward-end of the keeper allow water to enter the interior. A tether attachment is disposed on the bottom-portion at the forward end below the neutral buoyancy plane of the keeper body, and as a tether maintains the forward end into the wind and/or current, the keeper rocks fore and aft forcing water into the bottom-ports to provide dynamic water flow into the bait holder.

Abstract: A method that is usable with a well includes introducing solids into a pneumatic stream to produce a solids-containing pneumatic stream; communicating the solids-containing pneumatic stream to a blender assembly to mix the solids with at least one other material to produce a flow; and pumping the flow into the well.