Abstract: An uninterruptible power supply is disclosed that includes a digital controller comprising a plurality of microprocessors. These microprocessors are programmed and arranged to provide various control features heretofore unavailable using analog controllers of the prior art.

Abstract: A method and system for controlling the temperature of air returned to a conditioning unit in a zoned system is disclosed. The system includes a heating, ventilating, and air conditioning (HVAC) unit that has an economizer. The HVAC unit is connected to a plurality of zones by a supply duct and a return duct. A temperature sensor is provided to sense the temperature of air returning to the HVAC unit. A main control increases the amount of outdoor air entering the system through the economizer when the temperature of the returned air is excessively warm or excessively cold.

Abstract: Polyesters and polyester containers having a reduced coefficient of friction and improved clarity are produced using an antiblock agent comprising a dried talc having from about 20 to about 300 ppm water or a fatty acid tethered talc. The use of these talcs result in polyesters and polyester containers having a coefficient of less than about 1.0 and a clarity with haze values of less than about 4%.

Abstract: Methods are described for the characterization of microporous membranes such as crystalline molecular sieve membranes. The methods are based on the exposure of a membrane to a non-condensable inert gas e.g. helium, which may be transported through selective and non-selective pathways within the membrane, while at the same time exposing the membrane to increasing partial pressures of a condensable material in the form of a vapor or a gas. The condensable material may also be transported through the selective and non-selective pathways in the membrane. The condensable material progressively fills the pathways of the membrane and progressively attenuates the permeance of the non-condensable inert gas allowing detection and determination of non-selective pathways in the membrane.

Abstract: The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows.

Abstract: A new and improved header design for a fluid tight, current carrying header that reduces direct contact between the liquid coolant and brazed joints. More specifically, the present invention provides for a header with hollow strands for carrying a coolant, and solid strands, the hollow strands being longer than the solid strands, the hollow strands grouped together at a first end of the header to form a hollow strand package, and the hollow strands and the solid strands grouped together at a second end of the header to form a mixed strand package. The hollow strand package may be fused to a liner of the header. This construction reduces water contact with the current carrying braze and groups the fluid carrying hollow strands in a separate hollow strand package where a reliable, corrosion-resistant metal fusing process can be applied to provide a reliable leak proof seal.

Abstract: A process and a system for increasing para-xylene production from a C8 aromatic feedstream by coupling at least one xylene isomerization reactor with at least one pressure swing adsorption unit or temperature swing absorption unit to produce a product having a super-equilibrium para-xylene concentration. This product is then subjected to para-xylene separation and purification.

Abstract: A method and system for controlling the temperature of air returned to a conditioning unit in a zoned system is disclosed. The system includes a heating, ventilating, and air conditioning (HVAC) unit that has an economizer. The HVAC unit is connected to a plurality of zones by a supply duct and a return duct. A temperature sensor is provided to sense the temperature of air returning to the HVAC unit. A main control increases the amount of outdoor air entering the system through the economizer when the temperature of the returned air is excessively warm or excessively cold.

Abstract: The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows.

Abstract: A process for making paper with increased wet and dry strength by incorporating into the pulp suspension an ionic thermosettable resin which is the reaction product of dialdehyde and epihalohydrin, or epihalohydrin equivalent, with a copolymer containing monomer units derived by polymerization of monomers comprising acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof. The paper has wet and dry strength greater than that of paper not containing the resin and has a higher repulpability index than wet strength paper that is essentially the same but contains conventional polyazetidinium ion containing wet strength resin instead of the ionic thermosettable resin.

Abstract: A gas turbine operational strategy is provided for the optimization of ISO-Day rated performance. The invention is realized by setting the nominal operating line equal to or slightly below the operating limit line, so that ISO full load performance is maximized. Thus, the first stage turbine nozzle throat area is sized such that, without inlet bleed heat addition, and at Base-Load pressure ratio and firing temperature, the compressor operates within its operational limits on a ISO day. As ambient conditions change, levels of inlet bleed heat and firing temperature are controlled and the inlet guide vane angle is set whereby the nominal operating line is equal to or slightly below the operating limit line.

Abstract: A beaded plate and method of making same for a heat exchanger includes a plate having a generally planar surface and a plurality of beads extending generally perpendicular to the surface of the plate. The beads are formed in a repeating pattern of non-aligned beads within a plurality of rows of the beads.

Abstract: An ionic thermosettable resin useful for imparting wet and dry strength to paper is made by: (a) providing a copolymer comprising monomer units derived by copolymerization of acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof; and (b) reacting the copolymer with epihalohydrin or epihalohydrin equivalent and dialdehyde. Paper products made using the resin are more easily repulped than paper products made with conventional wet strength resins.

Abstract: A cable connection assembly including an enclosure which houses a plurality of cable connection modules, each having a frame structure, a plurality of receptacles and a housing. The receptacles are mounted through a first frame wall and a housing structure is connected to the frame structure to enclose a portion of each receptacle extending from one side of the wall. In operation, a first cable is located to one side of the wall and connected to one of the receptacles and a second cable is located to the opposite side of the wall and connected to the same receptacle to interconnect the cables.

Abstract: The present invention provides a sealed enclosure which houses fiber optic cable in a manner accepted in the field. The sealed enclosure for a cable includes a floor surface, the floor surface having a discontinuous periphery defining at least one opening in the floor surface, the at least one opening defining a pass through in the floor surface. Upstanding side and back walls extend from the floor surface, and a ceiling surface joins with the side and back walls opposite to the floor surface. At least one door is mounted to a front of the enclosure and against corresponding edges of the floor surface, side walls, and ceiling surface. A sealing assembly is positioned over the at least one opening in the floor surface to seal the enclosure from the external environment upon insertion of the cable within the enclosure.

Abstract: A cable management rack (10) for supporting and routing pluralities of fiber optic cables (24) to and from optical interconnection sites of stacks of interconnection enclosures (22). First brackets (40) along end frame members (14) enable securing of the cables routed vertically, and also support removable rack cover panels (18). Second brackets (70,70A, 90) include arcuate cable support surfaces (72) for routing selected cables 90.degree. (or 180.degree.) about bends having radiuses great enough to protect the optical fibers of the cables. The second brackets (70,70A, 90) are removably affixable to the end frame members (14) or to intermediate frame members (16) at any location along a columnar array of fastening sites (34) beside the enclosure stacks, to correspond to any desired location of a cable bend, with the rack thus being modular. Relay brackets (110) provide for excess cable take-up.

Abstract: A hood assembly for an electrical connector includes a pair of complementary releasably engageable hollow housing shells. Each of the shells is a unitary molded one-piece structure which includes slots for receiving flanges of an electrical connector for mounting the connector in the hood assembly. Each of the shells also includes a longitudinally extending inwardly projecting rail or rib immediately adjacent the strain relief mechanism of the connector, or a strain relief adapter mounted on the connector, to press against the individual conductors and provide additional strain relief. The shells are provided with complementary recesses which are cooperable to form openings for passing bundles of conductors or individual conductors therethrough, the edges of the openings also functioning to clamp the conductors when the shells are connected together.