Showing papers on "Diffuser (sewage) published in 1983"

Preliminary Design of a Fusion Reactor Fuel Cleanup System By The Palladium-Alloy Membrane Method

Abstract: A design for a palladium diffuser and fuel cleanup system for a deuterium-tritium fusion reactor is proposed. The feasibility of the palladium-alloy membrane method is discussed based on early stud...

Diffuser for augmenting a wind turbine

Abstract: A diffuser for augmenting a wind turbine having means for energizing the boundary layer at several locations along the diffuser walls is improved by the addition of a short collar extending radially outward from the outlet of the diffuser.

Fraunhofer Scattering by a Sub-fractal Diffuser

Abstract: It is shown that the contrast of the far-field intensity pattern, generated by illuminating a small area of a gaussian random diffuser with fractal slope, exhibits a characteristic power-law dependence on illuminated area.

Diffuser for gas turbine engine

Abstract: A diffuser system for a gas turbine engine includes a prediffuser and a piping system that diverts the flow into two streams. One stream captures the prediffuser discharge air at the center of the gas path where the total pressure is at its highest level and provides an additional stage of diffusing before dumping it around the burner to supply liner cooling air, turbine cooling air and if necessary, small amounts of dilution air to trim radial temperature profile. The other stream is ducted directly into the burner avoiding the typical dump diffuser losses.

Weir-type skimmer employing a wave diffuser

Abstract: A weir-type skimmer employing a wave diffuser for efficiently collecting an immiscible liquid from the surface of a body of higher density liquid in turbulent waters, including in combination: a floating containment boom having a wave diffuser disposed therein and a catch basin coupled therewith; a catch basin having a self-adjusting weir for regulating the flow of liquid therein; a water pump for removing and discharging water from the catch basin to the interior of the floating containment boom, forward of the wave diffuser; and an oil pump coupled with a skimming head for removing oil from the catch basin.

Burner for pulverized coal

Abstract: This burner is so designed as to be capable of operating in a stable manner with no risk of explosion with pure oxygen or air highly enriched with oxygen as the reactant. In one embodiment, a stream of oxygen is delivered through a central tube 4A which terminates in a divergent annular diffuser 30. A mixture of air and pulverized coal is delivered in an intermediate ring 15 around this diffuser and an annular stream of whirling oxygen is delivered in an outer ring 16. Application in indirect heating furnaces, furnaces in which slag exists and cement-making furnaces and in cases where special atmospheres (for example reducing atmospheres) are desired.

Aerodynamic platform comparison for jet-stream electricity generation

Abstract: Wind-tunnel experiments to determine lift and power extraction capability and an economic analysis to determine the cost of electricity generation have been undertaken for four aerodynamic platform configurations: integrated diffuser augmented wind turbine (IDAWT), separated diffuser augmented wind turbine (SDAWT), separated unshrouded wind turbine (SUWT), and rotary-wing concept (RWC). For each configuration the capital and operating costs of a 22-MW jet-stream power station based on ten minimum-cost aerodynamic platforms and related ground equipment have been calculated. The IDAWT anrf SDAWT configurations would produce electricity at a capital cost of about $(Australian) 650/kW [in Feb. 1981 $(Australian)l = $(U.S.)1.15, approximately—all currency is in Australian dollars unless otherwise noted] and an operating cost of under 5C/kWh; potential improvements in diffuser performance could reduce these costs below $550/kW and 4C/kWh, respectively. The SUWT configuration would produce electricity at a capital cost of about $700/kW and an operating cost of about 5.4C/kWh, but with little prospect of further reduction. The RWC would produce electricity at a capital cost of about $800/kW and an operating cost of about 16C/kWh. The high operating cost makes the RWC unsuited to the task of generating electricity from jet-stream winds. Nomenclature A e = diffuser exit area A T = diffuser area at the turbine station CL = lift coefficient Cp = power coefficient = Pi 1/2pu30A T C*4 = pressure coefficient at diffuser exit plane D = total drag on the platform de = diffuser exit diameter k = loss parameter, Eq. (1) £ = total length of diffuser augmented wind turbine Pi = probability that the wind speed lies in the /th speed band PDi = average power density associated with the /th speed band

On the Influence of the Diffuser Inlet Shape on the Performance of a Centrifugal Compressor Stage

Abstract: Results from an experimental study of the influence of the diffuser inlet shape on the performance of the diffuser and the whole compressor stage are presented The investigations were carried out using a single stage centrifugal compressor Three different vaned diffusers were tested From detailed flow field measurements the influence of the diffuser inlet shape on the performance of the essential components of the compressor stage, ie the impeller, the diffuser, and the collecting chamber was analyzed It is shown that the reaction of the vaned diffuser on the efficiency of the impeller is only weak but the losses in the collecting chamber are considerably affected by the used diffuser typesCopyright © 1983 by ASME

Air diffuser for waste water treatment

Abstract: An air diffuser has a non-porous rigid plate mounted on an air chamber to permit diffusion of air to the outside of the chamber, which porous plate has a smooth outer surface and diffusing pores extending therethrough, more than 95% of the diffusing pores having diameters within ±20% of a nominal diameter selected in a range of 50-300 μm.

Laboratory hood attachment

Abstract: An attachment for a laboratory hood having an opening leading to a work area includes a housing that has a lower open end and opening means extending the entire length along an upper portion of the housing with fans located in the housing between the opening means and the lower open end. The attachment also has baffle means for diverting the air flow through the housing and diffuser means to distribute the air equally along the entire length of the unit.

A design study of a palladium diffuser for a D-T fusion reactor fuel clean-up system

Abstract: In a recent study a palladium diffuser was shown to be feasible for a fusion fuel purification process which removes various impurities from plasma exhaust gases. In this study a mathematical model was developed to analyse the separation characteristics for a tubular palladium diffuser. Experiments with H2-He mixtures were carried out to determine some parameters for an actual diffuser. The hydrogen recovery ratio is defined as a function of the tube dimensions and operating conditions for a diffuser with a high recovery ratio are estimated. A fuel clean-up system for a fusion reactor equipped with the diffuser was also designed.

Porous-wall compact laser diffuser

Abstract: A porous-wall compact diffuser designed for chemical laser applications. The laminar boundary layer in the diffuser is removed through the porous wall by suction provided by a chemical pump concept, thereby stabilizing the normal shock wave in the supersonic flow channel at the juncture with the wide-angle subsonic diffuser section.

Fan diffuser and collector combination for cooling systems in dynamoelectric machines

Abstract: In a dynamoelectric machine, a fan diffuser and collector combination is part of the cooling system of the machine. The fan diffuser and collector is located in the annular chamber defined by the inner and outer end plate shields at one end of the machine. The fan diffuser includes a disk disposed in the radially inner portion of the annular chamber. An inboard surface of the disk is parallel to the adjacent surface of one of the shields. Both surfaces define a diffuser channel which receives substantially all of the gas flow expelled by a fan radially coextensive with the annular chamber. The disk is mounted on the other shield but has an outboard surface spaced away from that latter shield. The disk is foreshortened with respect to a frame wrapper which surrounds the stator and rotor of the dynamoelectric machine thereby forming a collector.

Humidifier for refrigerating showcase

Abstract: PURPOSE:To perform a sufficient humidification by a method wherein a large amount of fog is generated by plurality of super-sonic vibrator elements and transported to a cold air passage within a refrigeration show-case together with surrounding air fed from a blower through a plurality of discharging pipes and communicating pipes and the show-case is humidified. CONSTITUTION:A plurality of super-sonic elements within a main body 12 of a humidifier are driven by turning on a power supply switch so as to generate a large amount of fog. The generated fog is uniformly fed into a cold air passage 4 of a refrigerating show-case 1 through a plurality of feeding-out pipes 36, a communication pipe 26 and a through-pass pipe 57 over its width direction. Surrounding air sucked from an intake 11 at a lower end of an opening 2 of the show-case 1 by a blower fan 7 is cooled by a cooling unit 6, the cold air passes through a cold air passage 4, fog from a humidifier 12 is mixed with the cold air and humidified and then the air is blown from a diffuser 10 into the show-case 1. In this way, it is possible to supply the humidified air and the cold air together into a lateral long and wide storing chamber and then to perform a substantial uniform humidification.

Radiation heating apparatus

Abstract: PURPOSE:To improve the efficiency of heat exchange by disposing a jet pump to a hot-water feed pipe from a heat source and introducing one part of return-pipe hot water from a radiation heating panel to the suction side. CONSTITUTION:The high-temperature water of a heat source 10 is injected to a diffuser 19 from the nozzle 18 of the jet pump 14 by means of a circulating pump 12, and flows into the radiation panels 11. In this case, low-temperature water, which is discharged from the radiation panels 11 and returns in a return pipe 15, is sucked to the suction side 16, and flows 17 into the jet pump 14. Consequently, the high- and low-temperature waters are mixed in the jet pump 14, are changed into low-temperature hot water and flows into the radiation panels 11. Accordingly, the surface temperature of the radiation panels 11 is easily controlled at a predetermined temperature, and the effect of heat exchange can be improved.

Method and apparatus for flash evaporation of liquids

Abstract: A vertical tube flash evaporator for introducing a superheated liquid into a flash evaporation chamber includes a vertical inlet tube with a flared diffuser portion at its upper outlet end. A plurality of annular screens are positioned in axially spaced-apart relation to each other around the periphery of the vertical tube and below the diffuser portion thereof. The screens are preferably curved upward in a cup-shaped configuration. These flash evaporators are shown in an ocean thermal energy conversion unit designed for generating electric power from differential temperature gradients in ocean water. The method of use of the flash evaporators of this invention includes flowing liquid upwardly through the vertical tube into the diffuser where initial expansion and boiling occurs quite violently and explosively. Unvaporized liquid sheets and drops collide with each other to enhance surface renewal and evaporation properties, and liquid flowing over the outlet end of the diffuser falls onto the curved screens for further surface renewal and evaporation.

Soil packer for gas pipe-laying trench

Abstract: PURPOSE:To efficiently bury gas pipes, etc., laid in a trench by providing a tank device to discharge soil and sand loaded and a rammer to consolidate the soil and sand discharged to a vehicle running over the trench. CONSTITUTION:A self-running vehicle 1 reciprocally moving over a trench 13 in which gas pipes, etc., are to be buried underground is provided with a tank 3 for loading embedding soil and sand and a rammer for consolidating soil and sand embedded in the trench 13. In the tank 3, soil and sand are loaded and discharged from the outlet 6 of the tank 3 by a screw 7 while being diffused by a soil diffuser blade 8. In this way, soil and sand are discharged from the tank 3 and embedded in the trench 13. Then, the soil and sand are consolidated by the rammer 4 while a gas pipe is buried in the trench.

A jet pump

Abstract: A jet pump (2) for a low pressure fuel system has a diffuser (12) and a mixing section (10) produced by electroforming onto at least one highly polished mandrel, whereby the diffuser and the mixing section have a surface finish of substantially the same quality as the mandrel.

Removing method for bod and ss from organic waste water

Abstract: PURPOSE:To remove BOD and SS with a simple stage by admitting org. waste water contg. BOD and SS into the biological membranes of an anaerobic or aerobic immersion filter bed then introducing an oxygen-contg. gas in the filter bed of the deep layer. CONSTITUTION:Raw water 1 which is removed of coarse SS through a screen flows in upward flow into an immersion filter bed 2 of filter media of sands, anthracite, etc. of an arbitrary shape stuck with micro organisms. At the same time, oxygen is supplied from an air diffuser 3. Part of the BOD in the raw water 1 are removed by the microorganisms on the surfaces of the filter media and part of SS are captured in the bed 2 as well. The SS remaining in outflow water 4 are filtered away while flowing downward in a stationary bed 5 of granular filter media. On the other hand, the BOD components remaining in the water 4 are removed by the oxygen discharged from the air diffuser 6 and the microorganisms in the bed 5 and purified water 7 is obtained.

Dispenser for volatile perfume etc. - using convection currents from low power lamp passing through damp wick

Abstract: A diffuser for releasing perfume or other volatile material into the atmos has a reservoir for a liq stock in a bifurcated chimney above a chamber containing a low power incandescent lamp The vapour is entrained by warm convection currents generated when the lamp is on, passing through a wick or gauze partly immersed in the liq The reservoir chamber has a removable cover, may be disguised by being shaped decoratively, eg like a plant May be used to disperse volatile disinfectants, pesticides, etc, intermittantly, by controlling the energisation cycle of the lamp The body of the diffuser may be of cermic, glass, metal or plastic, of sufficient heat resistance, may be freestanding or wall mounted

Coating method for steel sheet and apparatus therefor

Abstract: PURPOSE:To enable a series of batch-type coating operation for a steel sheet placed in a heating oven, by using a degreasing means and/or a chemically converting means, a coating means and a baking means arranged in the heating oven CONSTITUTION:A steel sheet coil 17 is introduced into a heating oven 1 While the coil 17 is held in a loosed condition, the coil is degreased by use of a gas- introducing opening 5, a circulating fan 6, a diffuser 7, etc, and subjected to ground surface-conditioning comprising chemical conversion using a pump 15, a tank 13, a pipe 11, a sprayer 8, etc Therafter, paint is applied to the steel sheet coil by use of a pump 16, a tank 14, a pipe 12, a sprayer 9, etc, and baked by use of a burner 2, etc As mentioned above, a series of batch-type coating operation is done to the steel sheet placed in the heating oven, so that various sorts of small-lot products can be efficiently obtained by an inexpensive apparatus

Apparatus for feeding a diffuser

Abstract: The invention relates to diffusers and in particular to sugar cane diffusers in which the diffuser includes means to feed the material to be extracted into the diffuser and also rake means which are constrained to move in a predetermined horizontal plane and to remove material above that plane in order to provide a uniform distribution of the material on the width of the diffuser sieve.

Effect of Throat Length and Diffuser Angle on Pressure Loss Across a Venturi Scrubber

Abstract: (1983). Effect of Throat Length and Diffuser Angle on Pressure Loss Across a Venturi Scrubber. Journal of the Air Pollution Control Association: Vol. 33, No. 6, pp. 600-604.

Diffusion apparatus for gated irrigation pipes

Abstract: Diffusion apparatus for gated irrigation pipes including a gate retainer slidingly engaging the pipe to selectively control water dispensed therefrom, and a water diffuser which removeably connects directly to the gate retainer and is moveable therewith. The diffuser includes a framework which may be water porous and a water porous covering of fine meshed screen or bristles for diffusion of the water. The covering and framework together form a channeled or trough-like diffuser. The diffuser is provided with a pin which engages a receiving slot on the gate retainer to hold the diffuser in place. Use of the apparatus prevents soil erosion and unwanted furrowing of the soil at the outlets of gated irrigation pipes.

Foam breaker for aeration tank

Abstract: PURPOSE:To prevent the formation of drains of foamed liquid by disposing an anode and a cathode on the aerating water surface in the inside top part of an aeration tank, providing an electric power source for applying a voltage between both electrodes, and applying voltage to the electrode thereby heating and breaking the foam. CONSTITUTION:An electrode group 11 consisting of an anode and a cathode is disposed in the upper part of an ozone aeration tank 21, and an electric power source 12 for heating which applies voltage between the electrodes is provided. Ozonized air is blown as fine air from a diffuser having fine holes in the bottom part of the ozone aeration tank, and is brought into contact with raw water 1. When the intensive foaming makes the growth of foam vigorous to the extent of contg. the foam in waste gaseous ozone, the foam 5 contacts with the electrode group 11 provided in the top part of the tank 21. The foam becomes conductive and electric current flows between both electrodes, then Joule heat is generated by which the moisture on the thin surface skins of the foam surfaces is evaporated and the foam is broken easily.

Circulating dip coater

Abstract: PURPOSE:To maintain the distribution of the concentration of a liquid in a dip coater tank uniform, while diffusing the liquid to the entire body of the tank, by providing a diffuser plate at an opening for ejecting a liquid in the circulating dip coater. CONSTITUTION:A diffuser plate 7 having numerous fine openings for diffusing a liquid to be ejected is provided above an opening 4 for ejecting a liquid in the circulating dip coater. Thus, the unevenness of the concentration of the liquid in the dip coater tank 2 is eliminated, and uniform dip coating can be performed.