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Workshop on New Cross-cutting Technologies for Nuclear .

Total pipe volumes: S-CO2<< He Cost of working fluid: S-CO2<< He Paul Pickard (SNL), 2004 sCO2 has high power density 10MWe size comparison sCO 2 V. Dostal, "A Supercritical Carbon Dioxide Cycle for Next Generation Nuclear Reactors," Ph.D. Thesis, .

Engineering Standard - Piping Specification

MSS SP-83 Class 3000 Steel Pipe Unions, Socket Welding and Threaded; MSS SP-95 Swage(d) Nipples and Bull Plugs . CROSS ASTM A105 CS 2000 NPT ASME B16.11: . Valves with PTFE may be chosen for use in the OXO reactor loop piping. 35 - Valve Index 180 is alternate for 180K. 36 - May be used for Relief Valve changeover. .

Cooling Tower Pumping and Piping

is the equivalent of 100 ft / 100 ft pipe friction loss rate. Downcomer piping flow-friction loss will generally be to the order of 4 ft /100 ft. Since the pump has already provided the necessary fluid head to flow the downcomer, H r > ∆h (DE); friction flow

Kinetics-free process intensification: From semi-batch to .

A kinetics-free procedure is developed to transform a reaction recipe carried out in an isothermal discontinuous semi-batch reactor into one based on .

ANP-10264NP Revision 1

Section 5.0 presents pipe modeling techniques used in the qualification of piping for the U.S. EPR. Computer codes used in piping analysis are identified in this section with a brief description of each. Analysis boundaries, decoupling criteria and other modeling requirements are presented. Section 6.0 presents the pipe support design criteria.

Hardy Cross method - Wikipedia

The Hardy Cross method is an iterative method for determining the flow in pipe network systems where the inputs and outputs are known, but the flow inside the network is unknown. The method was first published in November 1936 by Shinn Taniguchi its namesake, Hardy Cross.

Pilot-plant studies of the pipe- and pipe-cross reactors .

The pipe-cross reactor, developed by the Tennessee Valley Authority in a project sponsored by the US Department of Energy, can save 1 to 2 per ton in production costs as a result of energy savings for steam and drying. This annual energy savings ranges from 50.00 to 100.00 per year for each plant, depending on annual production and .

Pipe Reactor - FEECO International Inc.

A pipe reactor is an acid-base reaction vessel used in the production of inorganic fertilizers. It is easily retro-fitted into existing granulation operations. Phosphoric or sulfuric acid is fed into one side of the pipe, while gaseous or liquid ammonia is sparged into the reaction .

4 Types of Nuclear Reactors Used in Power Generation .

Atomic piles or nuclear reactors. The number of neutrons resulting from a single fission is known as the multiplication factor. When this is less than 1 a chain reaction is impossible; when greater than 1 a chain reaction might take place. In an atomic pile, or a nuclear reactor, fissionable material is so arranged that the multiplication factor can be carefully controlled.

Map manufacture using the pipe reactor | SpringerLink

The Pipe Reactor, currently not used widely for MAP at capacities above 50 TPH, has advantages in being able to use high strength acid, resulting in low recycle and high capacity, with emissions well below Florida and EPA Standards. . TVA's Versatile Pipe-Cross Reactor, by FP Achorn and WH Paulson.

What is Cross Sectional Area? - Definition from .

The cross-sectional area of a pipe is calculated as A = π (D i ) 2 /4, where. A - area of the pipe. π - 3.14 (constant) D i - Internal diameter of the pipe. The fluid carrying capacity of two pipes can be compared by using the ratio of their cross-sectional areas. By keeping the velocity constant, the flow capacity of different pipe sizes can .

Solved: 2. A 1st Order Liquid Phase Reaction Is Carried Ou .

2. A 1 st order liquid phase reaction is carried out in a 20 m long l ½ schedule 40 pipe (cross sectional area, A c = 0.0013 m 2) packed with catalyst particles.Pure A is flowing through the pipe at a superficial velocity of 3 m/s and at an entering pressure of 10 atm. The bed is maintained at a temperature of 250 o C. The specific reaction rate at given temperature is k " = 800 m 3 /m 2.s

The Basics of Pipe Thermal Expansion | Pumps & Systems

Dec 17, 2011 · If the pipe has a 2 in diameter, the area is 1.075 in 2, the reaction force is 37,410 lb f and the resulting axial stress would be the same, 34,815 psi. The stress in this simple case only depends on the material properties and the temperature change; however, the anchor loads are also dependent on the pipe section dimensions.

Why Is Stainless Steel So Important in Nuclear Power .

Most reactors contain several steam generators. Moderators – The moderator (graphite or water) sits within the reactor's core and slows fission-produced neutrons. Rods – Created to control or curtail nuclear reactions, control rods reside in the reactor core. They contain boron, cadmium, or hafnium—all of which absorb neutrons effectively.

Pipe Supports, Guides, Shields & Saddles

Pipe supports offered in this section are designed to support pipe from a base structure where vertical adjustment may be required. Pipe guides and slides are designed to allow longitudinal movement due to thermal expansion and contraction of pipe. Protection shields and saddles are designed to prevent damage to pipe insulation.


tubes. Tubes for Candu reactors are often fabricated from alloy 800 and offer excellent service in that reactor design. The large pipes that return the spent steam to the reactor for reheat are typically manufactured from grade 300 stainless or austenitic stainless steel. Wyman Gordon's large extrusion presses are used to manufacture these pipes.

Cross Section Calculator - Engineering Calculator

Cross Section Property Calculator Powered by WebStructural. This free cross section property tool calculates moment of inertia, polar moment of inertia and second moment of inertia for various shapes. Select a Shape. English (inches, kips, ksi) English (inches) Metric (mm) Calculate. Engineer's Calculator.

Mixing and Reaction Technology - Sulzer

regime in the reactor may be laminar or turbulent. Example: The residence time distribution of an SMXL mixer DN 32 with a length of 1 m corresponds to a cascade of approximately 30 Ideally Stirred-Tank Reactors. Gas-liquid dispersion generated by an SMV mixer. Comparison of Nu numbers in SMX mixer, SMXL mixer and empty pipe.

Guidelines for the Design of Buried Steel Pipe July 2001

(EI)eq = equivalent pipe wall stiffness per inch of pipe length A = metal cross-section area of pipe A = distance to nearest explosive charge Af = pipe flow area B = empirical coefficient of elastic support C = soil cohesion C = depth of soil cover above pipe cL = sonic velocity in liquid Cp = seismic compression wave velocity in soil

Can you use brass and galvanized together? | AnswersDrive

The inner pipe for drinking water is made of a plastic called cross-linked polyethylene (PEX). There are no health risks associated with drinking water from PEX pipes. A few types of PEX-pipe may cause prolonged undesirable taste and odour if the water remains in pipes over time.

Heat Exchanger - Nuclear Power

The classic example of a heat exchanger is found in an internal combustion engine in which an engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air. In power engineering, common applications of heat exchangers include steam generators, fan coolers, cooling water heat exchangers, and condensers.

Force on a pipe bend calculation. Thrust block.

A=Pipe flow area (m 2) b=Pipe angle shown in the figure above (valid range is 0 to 2π radians or 0 to 360 o) d=Liquid (or gas) mass density (kg/m 3) D=Pipe diameter (m) F=Resistive (reaction) force (N) P=Gage pressure (N/m 2, relative to atmospheric pressure) Note: P 1 and P 2 cannot physically be below 0.0 absolute pressure (-101,325 N/m 2 gage).

Effect of Tube Diameter on Plug Flow Reactor - Wolfram .

Apr 08, 2014 · Details. Ergun equation for pressure drop in a plug flow reactor:,,,, where is pressure (), is distance down the reactor (m), is fluid density (), is friction factor, is the hydraulic diameter, which is equal to reactor diameter in absence of heating or cooling (m), is volumetric flow rate (), is the cross-sectional area of the reactor (), is the molar flow rate of (mol/s), is temperature (K .

Nuclear Pipe Nightmares - Union of Concerned Scientists

Emergency systems unaffected by the broken pipe protected the reactor core. Investigation revealed that the pipe, which was installed with a wall thickness of 1/2-inch, had thinned to about 1/4-inch by erosion from the water rushing through it. The section that ruptured was an elbow where the pipe bent, forcing an accelerated erosion rate.

Cross Pipe Reactor Of Unsaturated Polyester Resin - Buy .

Cross Pipe Reactor Of Unsaturated Polyester Resin, Find Complete Details about Cross Pipe Reactor Of Unsaturated Polyester Resin,Out Pipe Reactor,Outer Tube Disc Reaction Vessel,Outer-coil Reactor from Mixing Equipment Supplier or Manufacturer-Laizhou Yuanda Chemical Industry Machinery Factory

Design of PE Piping Systems - Plastics Pipe Institute

the pipe in environments where specific chemicals are known to have an effect on PE and therefore require derating as described in Chapter 3. Table 1-2 gives Environmental Applications Factors, A F, which should only be applied to pressure )* Chapter 6 Design of PE Piping Systems.

Pipe Reactor - Industrial Professionals - Cheresources.com .

Jul 27, 2011 · Pipe Reactor - posted in Industrial Professionals: Hi all, The pipe reactor used for DAP production in fertileser is common by using ammonia and phosphoric acid. I would like to design the pipe reactor for caustic and phosphoric acid reaction to get disodium phosphate. I would like to know the detailed steps involved in designing the pipe reactor.

Design of PE Piping Systems - Plastics Pipe Institute

the pipe in environments where specific chemicals are known to have an effect on PE and therefore require derating as described in Chapter 3. Table 1-2 gives Environmental Applications Factors, A F, which should only be applied to pressure )* Chapter 6 Design of PE Piping Systems.

Sewage Sludge Recycling With A Pipe Cross-Reactor - Unity .

Mar 18, 2010 · The pipe-cross reactor terminates in a rotating drum granulator. The rotating drum granulator is six (6) feet in diameter, and is twenty (20) feet long. The slurry is added to the pipe-cross reactor, and is reacted with 8.6 gpm 99.5% ammonia, 8.6 gpm sulfuric acid (93%), and 2.6 gpm phosphoric acid (54% P 2 O 5). The temperature of the pipe .

Plug flow reactor model - Wikipedia

The plug flow reactor model (PFR, sometimes called continuous tubular reactor, CTR, or piston flow reactors) is a model used to describe chemical reactions in continuous, flowing systems of cylindrical geometry. The PFR model is used to predict the behavior of chemical reactors of such design, so that key reactor variables, such as the dimensions of the reactor, can be estimated.