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Pressure barrier

The tandem dual seal is mostly mated to a pressurized barrier tank, or a pumping unit as the support system. Support systems are discussed later in this chapter. [Pg.196]

Drop in Pressure Double seal with pressurized barrier fluid... [Pg.220]

Dangerous Liquids Use a dual seal with a pressurized barrier tank. [Pg.220]

An FRP pipeline typically consists of (1) an inner nonpermeable barrier tube that transports the pressurized gas, (2) a protective layer over the barrier tube, (3) an interface layer over the protective layer, (4) multiple glass or carbon-fiber composite layers, (5) an outer pressure barrier layer, and (6) an outer protective layer. Each of the layers provides a distinct function and the interaction between the layers produces a pipe with exceptional performance. [Pg.362]

Through the use of a transparent fuel cell, Spernjak et al. [87] were able to visualize the anode FF plate (and DL without MPL) while operating the fuel cell with a cathode that had MPL on the DL. It was observed that liquid water was present in the anode flow field only when an MPL on the cathode side was used. Again, this is an indication that the cathode side creates a pressure barrier that pushes the water toward the anode. These observations agree with the ones presented mathematically by Weber and Newman [148]. Although they did not do any experimental work, their two-phase fuel cell model concluded that the MPL acts as a valve that pushes water away from the DL toward the anode though the membrane. [Pg.238]

The solid gel provides a pressure barrier to blood flow. The barrier dressing could be a valuable first step hemostatic agent under field conditions prior to advanced treatment. [Pg.47]

Bifurcation branching achieves equidistribution by flow symmetry (see Figure 1.72). The outlet arrangement is basically identical with the interdigital feed concept. While the bifurcation concept does not demand the build-up of an additional pressure barrier (see the interdigital structures in Section 1.3.9), besides the pressure drop for the flow passage itself, it poses much higher demands on the structural... [Pg.98]

When a protein adsorbs from a solution in which the pH is close to its isoelectric point, the rate of adsorption at mobile interfaces is controlled by the rate of diffusion to the interface and the interfacial pressure barrier. However, when the protein molecule takes on a net electrical charge, an additional barrier to adsorption appears, owing to the electrical potential set up at the interface by the adsorbed protein. [Pg.290]

Polymeric seals are used for many electrical applications including oil retention, nitrogen or sulfur hexafluoride gas pressure barrier, moisture exclusion, and lubricant retention. Mechanical seals and O-rings are typically specified based on polymer type (i.e., silicone, buna, Viton) and durometiy. The latter is a measure of the elastic resilience of a seal. The base polymer is chosen on the basis of compatibility with the selected contact material. Catalogs from seal suppliers are... [Pg.333]

Fig. 14. (a) The juxtaposition profile of Fault 2 (upper left) shows that the lowest value of throw is located at the centre of the fault (ca. 15 m). (b) SGR (lower right) below 15% are found where the Middle Tarbert 2 unit is self-juxtaposed. This area of low SGR is not likely to behave as a pressure barrier. Note that the low SGR is found in the upper part of the interval as illustrated in Fig. 9a. [Pg.122]

There is no clear evidence of major faults within the Sm0rbukk reservoir (Heum et al., 1986), and pressure barriers within the same formation appear not to be structurally controlled (Ehrenberg et al., 1992). It is therefore possible that compartmentalization to a large extent is due to progressive burial diagenesis of sandstones and siltstones, particularly in the Tilje Formation which may have lateral facies variations. [Pg.212]

Within both domains, the overpressure of individual pressure gradients increases with increasing depth. Individual aquifer trends for the terrace areas are similar and modestly overpressured with respect to surface hydrostatic conditions (ca. 0.6 psi/ft with respect to surface). Aquifer trends within the deep graben domain are more variable and more highly overpressured (up to 0.9 psi/ft with respect to surface). The hiatus in aquifer pressure between the terrace and graben domains suggests the presence of regional lateral pressure barriers (Fig. 13). [Pg.238]

Alternatively, an additional layer constructed by using fine nickel powder, L1A102, and NiO is positioned between the anode and the electrolyte and filled with molten carbonate electrolyte. The purpose of this additional layer is to prevent gas crossover from one electrode to the other if cracks develop in the electrolyte structure. This bubble barrier layer serves as a reinforcement of the electrolyte matrix. This bubble pressure barrier (BPB) can be fabricated as an integral part of the anode structure. Typically, the pores of this barrier layer are smaller than the anode pores and provide ionic transport through the cell. ... [Pg.1752]

This implies that, in the foam layer, the aqueous film separating two oil droplets thins to a black film under the action of van der Waals attraction forces. The boundary between the foam layer and the coalesced layer is associated with a force (or pressure) barrier. [Pg.445]

Sun Jianhua, The porous-leak-pressure barrier explosion of the automatic air-door that is used in the mine, China Mining Magazine, 2011.20(3) 105-106 China Coal Society, 2008, 33(8) 903-907(In Chinese). [Pg.444]


See other pages where Pressure barrier is mentioned: [Pg.44]    [Pg.176]    [Pg.582]    [Pg.69]    [Pg.69]    [Pg.251]    [Pg.276]    [Pg.102]    [Pg.114]    [Pg.138]    [Pg.69]    [Pg.69]    [Pg.210]    [Pg.163]    [Pg.35]    [Pg.77]    [Pg.102]    [Pg.131]    [Pg.147]    [Pg.233]    [Pg.283]    [Pg.288]    [Pg.302]    [Pg.338]    [Pg.201]    [Pg.212]    [Pg.213]    [Pg.1752]    [Pg.1760]    [Pg.60]    [Pg.100]    [Pg.367]    [Pg.35]   


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