58results about How to "Minimal pressure drop" patented technology

Blood treatment system and method for high rate hemofiltration ensures against pyrogenic patient reaction by providing various mechanisms for filtering replacement fluid to remove endotoxins and other safety features including detecting incorrect fluid administration.

A device, method, and system for creating a pressure pulse from drilling fluid within a drill string in a down hole drill collar for enabling measurement-while drilling. The device and system are designed such that primarily laminar flow exists in the area surrounding the pulser apparatus. The method associated with the reproducible and essentially noise-free pulses occurs when a pulser bell is manipulated in an upward and downward direction by a combination of the solenoid activation of a bi-directional poppet to redirect the fluid flow from the pressure reservoir to and from a sliding pressure chamber and associated upper and lower flow connecting channels. The pulse or non-pulse is converted into a digital signal uphole by a pressure transducer in conjunction with a decoding algorithm. It is then displayed to the driller and oilfield operators as useful directional and formation information that help the oilfield operator for uphole decision making regarding directional drilling. Additional pulsers can be added to the tool so that higher data bit rates can be accomplished. These higher data bit rates will provide for more comprehensive data collection thereby reducing drilling costs and optimizing oil field yields. The higher bit rate allows for more sensors that can send additional and improved information uphole without the use of open hole wire line logging which is impossible to accommodate while drilling horizontally.

A cooling door assembly includes a frame and a cooling door coupled to the frame. The cooling door includes one or more heat exchangers. The frame is configured to mount to the back of a server rack or other electronics enclosure in such a manner that the cooling door opens to allow access to the electronics servers within the server rack while maintaining a fluidic connection to an external cooling system. The frame is coupled to the external cooling system and the cooling door includes swivel joints configured to provide a fluid path between the cooling door and the frame. In this manner, the frame remains in a fixed position, while the cooling door is configured to rotate relative to the frame so as to open and close, while maintaining the fluid path through the swivel joint.

An apparatus for housing and cooling circuit card assemblies employed in communication and other systems is disclosed including a chassis having opposed end walls which are formed with a series of spaced inlet card guides and correspondingly spaced outlet card guides, respectively. A straight-pass heat exchanger is directly mounted to each circuit card assembly via thermally conductive material, and opposed ends of the heat exchanger are mounted by a wedge lock to respective inlet and outlet card guides. The heat exchanger employs unique angled interface geometry that creates a gasketless airtight joint with complimentary inlet and outlet card guide geometry through which cooling air passes.

A cooling device has a large number of closely spaced impinging jets, adjacent an impingement gap, with parallel return paths for supplying coolant flow for the impinging jets with the least possible pressure drop using an interdigitated, branched hierarchical manifold. Surface enhancement features spanning the impingement gap form U-shaped microchannels between single impinging jets and single outlets.

A compact noise silencer for a blower, including an L-shaped back wall having a sound adsorbent media and side walls defining a triangular enclosure, an inlet opposite one portion of the back wall and a central outlet opposite the back wall having a filter directing air into a blower. In the disclosed application, the blower directs air into a burner which heats the air for various applications.

A device, method, and system for creating a pressure pulse from drilling fluid within a drill string in a down hole drill collar for enabling measurement-while drilling. The device and system are designed such that primarily laminar flow exists in the area surrounding the pulser apparatus. The method associated with the reproducible and essentially noise-free pulses occurs when a pulser bell is manipulated in an upward and downward direction by a combination of the solenoid activation of a bi-directional poppet to redirect the fluid flow from the pressure reservoir to and from a sliding pressure chamber and associated upper and lower flow connecting channels. The pulse or non-pulse is converted into a digital signal uphole by a pressure transducer in conjunction with a decoding algorithm. It is then displayed to the driller and oilfield operators as useful directional and formation information that help the oilfield operator for uphole decision making regarding directional drilling. Additional pulsers can be added to the tool so that higher data bit rates can be accomplished. These higher data bit rates will provide for more comprehensive data collection thereby reducing drilling costs and optimizing oil field yields. The higher bit rate allows for more sensors that can send additional and improved information uphole without the use of open hole wire line logging which is impossible to accommodate while drilling horizontally. Disclosed is a concentric, stream-line centralizer device, secured inside a drill collar and fastened to a measurement while drilling device, wherein a drilling fluid moves with a laminar flow within the drilling collar.

A fuel cell power plant includes a plurality of fuel cell stacks which are operatively associated with each other so that both the air stream and fuel stream for the stacks are shared by each of the stacks in the power plant. The air and fuel streams are fed into an initial stack stage in the power plant, and after the air and fuel streams pass through the initial stack stage, the fuel exhaust streams are then fed into one or more subsequent stack stages in the power plant. The fuel streams are passed from the initial fuel cell stack stage to the subsequent fuel cell stack stage by means of a common manifold on which each of the fuel cell stacks in the power plant is mounted. The air streams are routed to all of the fuel cell stacks via a channel in the common manifold.

A reforming and hydrogen purification system operating with minimal pressure drop for producing free hydrogen from different hydrogen rich fuels includes a hydrogen reforming catalyst bed in a vessel in communication with a core unit containing a hydrogen permeable selective membrane. The vessel is located within an insulated enclosure which forms an air inlet passageway and an exhaust passageway on opposite sides of the vessel. Air and raffinate pass through a burner within the air inlet passageway, providing a heated flue gas to heat the catalyst to the reaction temperature needed to generate free hydrogen from the feedstock. The burner flue gas flows laterally over and along the length of the bed between the input and output ends of the bed. Hydrogen is recovered from the core for use by a hydrogen-consuming device such as a fuel cell. The remaining unrecovered hydrogen in the reformed gases is contained in raffinate and is used to supply process heat via the burner. The exhaust flue gas and the inlet air supply pass through a recuperator in which the inlet air is heated from the hot exhaust gas. The feedstock input line is also coupled to the raffinate line and the hydrogen recovery line to preheat the feedstock prior to entry into the catalyst bed.

Contaminant is removed from a gaseous stream, especially an air stream bearing the contaminant, by adsorption on a sorbent which is a resiliently compressible, electrically conductive, activated carbon cloth material, leaving a gaseous stream liberated of the contaminant; the carbon cloth material loaded with the contaminant may be regenerated by desorption of the contaminant; the carbon cloth material loaded with contaminant is housed in a vacuum and electric current is passed through the carbon cloth material generating heat in the cloth material which is effective to desorb the contaminant which is exhausted under vacuum; the level of heat generated is varied as required, typically to develop a temperature of 250 to 500° C. in the cloth material, by varying the compression of the cloth material; desorption is typically achieved in about 30 minutes at a vacuum of 10 Torr or less.

Mixing devices comprise a mixing element having a body with a fluid inlet port, and a fluid outlet port that is separated from the fluid inlet port. Fluid outlet passages extend through a body wall section defining the fluid inlet port, and fluid inlet passages extend through a body wall section defining the fluid outlet port. The body includes an outside surface having a reduced diameter section, and the fluid inlet and outlet passages are positioned axially along the reduced diameter section. The mixing element is statically disposed within an internal chamber of a housing, and an annular volume is defined between an inside surface of the internal chamber and the mixing element reduced diameter section to facilitate passage and mixing of fluid within the annular volume. The mixing element total inlet area is approximately equal to its total outlet area to minimize unwanted pressure drop.