Bundle design

Tube-Side Passes Most exchangers have an even number of tube-side passes. The fixed-tube-sheet exchanger (which has no shell cover) usually has a return cover without any flow nozzles as shown in Fig. 11-35M Types L and N are also used. All removable-bundle designs (except for the U tube) have a floating-head cover directing the flow of tube-side fluid at the floating tube eet. 

The longitudinal finned tube usually is adapted to double pipe exchangers but is used in the conventional bundle design with special considerations. 

Pogue BW, Burke G. Fiber-optic bundle design for quantitative fluorescence measurement from tissue. Applied Optics 1998, 37, 7429-7436. 

Design type Tube bundle design pressure, psi ... 

Fiber optics have been used in Raman spectroscopy since the early 1980s (36,37). In 1986, Archibald et al. demonstrated the use of a fiber-optic probe with a FT-Raman system (38). Today, much of the research in the use of fiber optics in FT-Raman spectroscopy centers around fiber (and fiber bundle) design. The number, type, and arrangement of the fibers in a fiber bundle are all factors that are... 

A different example of complementarity is explored in this chapter. We report studies of a bifunctional redox protein maquette based on the triple-helix bundle design of Ghadiri, Sasaki, and co-workers (4-S). Attempts to monitor electron transfer from an N-terminal ruthenium tris-bipyridyl excited state were fruitless, since electron transfer could not compete with the excited state decay of the Ru(IP) tris-bpy. However, as described below, replacement of photoactive ruthenium by a radiolytically accessible Co couple has allowed initial exploration of electron transfer in this synthetic protein couple. In turn, photochemistry initiated at the viologen chromophore helped confirm and extend the radiolytic results. 

For the PFTR, if the cooling is as strong as it usually is in tube bundle designs the tube wall temperature will approximately be e()ual to the coolant temperature. 

The bundle design places minimum external forces on a fuel rod each fuel rod is free to expand in the axial direction. 

CANFLEX CANDU FLEXible fueling—an advanced fuel bundle design... 

The short, simple fuel assemblies for the HWR, called fuel bundles, are easily produced, and Korea, India, Argentina, Romania, and China all have independent fuel fabricafion facilities sufficient to meet their demand. Furthermore, HWR fuel-cycle costs are low because natural uranium is relatively inexpensive, the uranium utilization (amount of energy produced from the mined uranium) is good, and the fuel bundle design and manufacture is simple. 

Although several fuel bundle designs are in use in HWRs, a typical fuel bundle design is the CANDU 6,37-element bundle (Figure 15.2). The following summarizes some prominent features of fhis fuel bundle design ... 

In India, the present 19-element fuel bundle design used in the operating plants is an improved version of the wire-wrap fuel bundle that was used in the Douglas Point Reactor in Canada. This fuel was first installed in the Rajasthan Atomic Power Station-1 in 1972 (Das et al. 1995 Gupta et al. 1997 Jaya Raj et al. 1992). 

Finally, Ihe basic CANDU fuel bundle design lends itself to fuel-cycle flexibility because the fuel composition can be easily varied from ring to ring within the bundle. Because of the low sensitivity of neutron spectrum to details of the fuel design, new fuels can be accommodated within operating reactors without changes to the fuel bundle or reactor core geometry. 

The CANFLEX bundle design forms the basis of the both the fuel design adopted for LVRF (Section 15.7.2) and for the fuel design in the new 1000 MW Advanced CANDU Reactor. 

Tube bundles design for pressure fluidized bed Bed expansion... 

Tube bundles design with the consideration of tube erosion Bubble size, tube erosion, tube bundle design Bubble eruption, particle elutriation process Prediction of the bubble size distribution... 

Bubble size modification, tube bundles design Visual observation... 

Ye S, Discher BM, Strzalka JW, Noy D, Zheng S, Dutton PL, and Blasie JK. Amphiphilic 4-helix bundles designed for biomolecular materials applications. Langmuir 2004 submitted. 

Steam generators - The IRIS SGs are once-through, helical-coil tube bundle design with the primary fluid outside the tubes [6]. As shown in Fig. 4, eight steam generator modules are located in the annular space between the core barrel (outside diameter 2.85 m) and the reactor vessel (inside diameter 6.21 m). 

FIGURE 7.12 Various insulated wire mounting designs for cone calorimeter tests single-layer design and bundle design (From Ref. 62, cop3rright 2005, John Wiley Sons, Ltd., with permission.)... 

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