Single devices

These ratings can be enhanced by connecting them in series-parallel combinations. In scries to enhance the voltage rating and in parallel to enhance the cuiTcnl rating. Bui the controls may not be so accurate as with a single device. 

In all these conditions protection against 2, 3, 4 and 5 is generally applicable to large LT motors, say 100 h.p. and above, and all HT motors. This protection is normally provided by a single-device motor protection relay, discussed in Section 12.5. 

The follow ing are the normal protections that may be available in both-a solid-state ora microprocessor-based relay, making them a single-device protection ... 

Purpose Unfavourable operating conditions Fault conditions Protection Single-device motor protection relays Summary of total motor protection Motor protection by thermistors Monitoring of a motor s actual operating conditions Switchgears for motor protection Selection of main components Fuse-free system... 

Air pollution control systems using wet scrubbers will remove some water-soluble gases, but the removal of particulate matter is the primary concern for a control system. The air pollution control system, therefore, is usually a single device such as a wet scrubber, small-diameter multiple cyclones, fabric filters, or ESPs. The multicyclones are the least expensive system and the ESPs the most expensive. 

The combination of several unit operations into a single piece of equipment can eliminate equipment and simplify a process. There may be inherent safety conflicts resulting from this strategy (see Section 2.4). Combining a number of process operations into a single device increases the complexity of that device, but it also reduces the number of vessels or other pieces of equipment required for the process. Careful evaluation of the options with respect to all hazards is necessary to select the inherently safer overall option. 

Reactive distillation is a technique for combining a number of process operations in a single device. One company has developed a reactive distillation process for the manufacture of methyl acetate that reduces the number of distillation columns from eight to three, also eliminating an extraction column and a separate reactor (Agreda et al., 1990 Doherty and Buzad, 1992 Siirola, 1995). Inventory is reduced... 

Variable Common Instrument Society of Americo I.S.A.) Single Device Combination Device... 

External numbering-up benefits from true repetition of the fluidic path, and hence preserves all the transport properties and hydrodynamics, determined in advance for a single-device operation. This is commonly believed to result in a... 

As a further advantage, large flows are provided by these devices, even when operating with a single device. Pilot-scale operation, with one or a few micro devices, is easily feasible. Especially in the case of foam formation, parallel operation of many devices having the same flow pattern seems to be possible. 

MOSFETs. A type of semiconductor device that utilizes oxide ceramics is a metal-oxide-semiconductor field-effect transistor, abbreviated as MOSFET. Just like the semiconductor junction devices of Section 6.1.1.6, the MOSFET is composed of n-and / -type semiconductor regions within a single device, as illustrated in Figure 6.36. 

C. J. Seliskar, and W. R. Heirreman, "Spectroelectrochemical Sensing Based on Multimode Selectivity Simultaneously Achievable in a Single Device," Anal. Chem. 1999, 71, 1196.]... 

Advancements in the area of optical biosensors for nucleic acid determinations have been substantial and many design concepts and surface chemistries have been explored. A practical solution that provides for all of the desired biosensor attributes - reusability, robustness, reliability, selectivity, sensitivity and speed of response - in a single device has not yet been... 

A high-intensity heat pump, called Rotex, has been developed taking advantage of the enhanced heat and mass transfer performance of rotating discs (44). This single device carries out the processes of evaporation, condensation, absorption, and heat transfer to a working fluid. 

The essence of a PEC is that PV electric power and electrolytic decomposition of water are integrated into a single device. In its simplest form, a PEC hydrogen production cell consists of a light absorbing semiconductor electrode connected electrically to a metal counter electrode, both immersed in an electrolyte. 

Start-up was effected by feeding methanol directly to the burner. The integrated reformer/burner reactor and the integrated PrOx reactor/cooler fabricated at IMM are shown in Figure 2.74. Characterization of the single devices and their assembly is still pending. 

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