Single open ended

Single Open End with O-Ring with Seal... 

Air oxidation of sodium sulfite solutions, containing a trace of cupric ion as catalyst, was first studied by Cooper et al. (C7). These workers found the reaction rate to be essentially independent of sulfite and sulfate concentrations and therefore especially convenient for their study. Most of their runs were made using a vaned-disk agitator (a flat disk with sixteen radial vanes on its lower face) in baffled vessels 6-17 in. in diameter. Tank-to-impeller diameter ratio was 2.5, and the impeller was 0.3 tank diameter off the bottom, in every case. Impeller speeds were 60-900 r.p.m. A few measurements were made with a simple flat paddle, with a total length one-fourth the vessel diameter, in 9.5- and 96-in. diameter tanks. Air was introduced from a single open-end pipe just below the center of the agitator. Superficial air velocities were 0.3-11 ft./min. 

The conventional hollow-flber-type RO element is a single open-ended (SOE) structure, in which the pressure drop of the permeated water in the bore side of the hollow fibers prevents the development of a large-sized (longer) RO element [70]. In this work, a both open-ended (BOE) element was devised to reduce the permeate pressure drop. Medium-sized Toyobo RO module HJ9155 (CTA) was used for the test. It has been confirmed that the permeate flow rate of BOE was greater by about 30% than that of SOE. 

Single open end with O-Ring with seal... 

Toyobo s newest innovative RO module builds on the proven reliability of the HM-type module. The new technology is based on both open-ended (BOE) hollow-fiber membrane stmctures versus single open-ended hoUow-fiber membrane stractures. The... 

A comparison for the case where the effective fiber length, L, is reduced by opening both ends of the fiber to allow flow from each end compared to just one end is illustrated in Figure 2.18. Also shown in Figure 2.18 is a comparison of the average bore pressures for the BOE type versus the single open-ended type. 

Both Open-Ended (BOE) Hollow-Fiber Membrane Single Open-Ended Hollow-Fiber Membrane Figure 2.18 Comparison of both open-ended (BOE) vs. single open-ended hoUow-fiber membrane. 

Model Conventional Model HM10255 (HM10155) Single Open-Ended (SOE) New Model HB10255H (HD10155) Both Open-Ended (BOE)... 

Figure 1. Available pressure drop may in some cases dictate acceptance of a lower maximum velocity, but at least 75 m/s is recommended to insure good dispersion. Flare tips consisting of a simple open-ended pipe with a single pilot are subject to flame lift-off and noise problems at lower velocities, and should therefore be designed for a maximum velocity of 50 m/s.

Table VII. Aluminum Pickup by a Tea Beverage Stored in Single-Coated Aluminum Cans with Easy-Open End°...

For the flow not to be appreciably disturbed, the diameter of the instrument must not exceed about one-fiftieth of the diameter of the pipe the standard instrument (diameter 7.94 mm) should therefore not be used in pipes of less than 0.4 m diameter. An accurate measurement of the impact pressure can be obtained using a tube of very small diameter with its open end at right angles to the direction of flow hypodermic tubing is convenient for this purpose. The static pressure is measured using a single piezometer tube or a piezometer ring upstream at a distance equal approximately to the diameter of the pipe measurement should be made at least 50 diameters from any bend or obstruction. 

Two types of continuous flow solid oxide cell reactors are typically used in electrochemical promotion experiments. The single chamber reactor depicted in Fig. B.l is made of a quartz tube closed at one end. The open end of the tube is mounted on a stainless steel cap, which has provisions for the introduction of reactants and removal of products as well as for the insertion of a thermocouple and connecting wires to the electrodes of the cell. A solid electrolyte disk, with three porous electrodes deposited on it, is appropriately clamped inside the reactor. Au wires are normally used to connect the catalyst-working electrode as well as the two Au auxiliary electrodes with the external circuit. These wires are mechanically pressed onto the corresponding electrodes, using an appropriate ceramic holder. A thermocouple, inserted in a closed-end quartz tube is used to measure the temperature of the solid electrolyte pellet. 

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