Diameter of inlet

In the first case, the diameter of inlet piping leading to the valve is smaller than the valve inlet bore, which is a frequently made mistake and to be avoided at all times. Even on short runs, this leads to excessive pressure losses and high turbulences when opening, which in turn leads to unstable operation of the valve. 

Definition of terms a = diameter of inlet, A = electrode area, b = channel height, C = concentration (mM), F = Faraday constant, D = diffusion coefficient, v = kinematic viscosity, r = radius of tubular electrode, U = average volume flow rate, u = velocity (cm/s), n = number of electrons. Source Adapted from Ref. 84. 

Steam ejectors Operability of steam ejectors is very sensitive to the stability in the motive fluid (steam) pressure. Prefer vacuum pumps to steam ejectors (H). Keep diameter of pipes = diameter of inlet and discharge flanges of ejectors. As the column overhead mass flowrate increases above design, so will the column overhead pressure and vice versa. Compression ratios per ejector 6 1 to 15 1. If inlet gas temperature < 0 °C or below the triple point of water (0.61 Pa) then add steam jacketing to cope with ice formation. Seal for the hot well submerge > 30 cm. The volume in the hotwell between the pipe and the overflow weir should be 1.5 times the volume in the down spout sealed. Replace any nozzles or diffusers where the area is > 7 % larger than design. 

Diameter of inlet gas orifice in spouted beds (L), inlet diameter of hydrocyclone (L) Overflow pipe diameter of hydrocyclone (L)... 

Internal Diameter of Inlet Tubing (mm) Total Extra-column Volume (p.L) Ratio of Extra-column Volume to Column Void Volume Ratio for a 50 X 2.1 mm Column (104 gL) ... 

The break of one of the four core inlet pipes of KALIMER is analyzed and the inherent safety of KALIMER against a pipe break is evaluated in the present study. The reactivity feedbacks, the power trend and other parameters are predicted to show quite different behaviors depending on whether the GEM becomes effective or not. In the base case, in which the break area is equivalent to the diameter of inlet pipe, the core flow is reduced to about 65% full flow and the GEM level remains above the active core top. In this case, the power is governed by the combined effect of the reactivity feedbacks induced by the Doppler, sodium, radial, axial and control rod driveline behaviors. To overcome the deficiencies in modelling the pipe break with the SSC-K code, the core flow is artificially reduced to about 50% full flow, which results in the operation of GEM. 

Velocity and Dynamic Head vs. Inner Diameter of Inlet Piping to ttie High Pressure and Low... 

Two situations need to be considered depending on the type of inlet tube used either conventional (normal) narrow tubes or very-small-diameter nanotubes. 

The cyclones are typically designed with diameters of 100—160 cm for ease of maintenance. Cyclone inlet velocities are usually restricted to 18—21 m /s in the first stage and to 20—26 m/s in the second stage to achieve satisfactory pressure drop and erosion characteristics (62). The number of sets of two-stage cyclones thus depends on the total gas flow. Finding room to house all the necessary cyclones within the regenerator frequently requires considerable ingenuity (62). 

M, = mean molecular weight of gas stream at inlet to tube D = diameter of tube, m... 

Figure 5-26. Estimation of impeller diameter using inlet volume.

Figure 52 is a representation of a complete module. For clarity, the vessel and inlet distributor have been omitted. The actual outside diameters of individual fibers range from 3 to 10 mils, depending on manufacturer. 

An important design detail is that the inlet line should be sloped at least 30" from the horizontal and the diameters of the vertical and sloped legs of the Y-seal are sized such that a 3 m slug of water is pressured back up the sloping inlet line, without spilling over into the header, in the event of flashback. Note that this requires an enlarged diameter section in the vertical leg of the Y-seal. The seal is maintained by a continuous flow of water at 1.26 dm /s and the water makeup is provided with steam injection, if required for winterizing or cold releases. 

The vessel is a 15 ft high cylinder with a diameter of 16.25 ft constructed of half-in thick, type 304 stainless steel plate. Six outlet nozzles are uniformly spaced around the circumterence at the bottom, and six tapered inlet nozzles are uniformly spaced around the circumference of the water plenum at the top of the vessel. The primary water system PWS contains 40,000 gal of DjO 24,000 gal in the re tank and 16,000 gal in the piping system. Each of the six primary loi ted... 

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