Poor performance

Evaporator system problems usually are evidenced by one or all of the following symptoms  

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Cork [61789-98-8] is an effective low cost charring ablator. In order to reduce moisture absorption and related poor performance, cork particles are often blended in a silicone or phenoHc resin. The result is a uniform ablative material in a sheet form that is easy to apply. 

Poor performance can result from fan inlet eccentric or spinning dow, and discharge ductwork that does not permit development of hiU fan pressure. Sometimes inlet restrictions starve a fan and limit performance. To obtain rated performance, the air must enter the fan uniformly over the inlet area without rotation or unusual turbulence. This allows all portions of the fan wheel to do equal work. If more air is distributed to one side of the wheel, such as with an elbow on the inlet, the work performed by the lightiy loaded portions of the wheel is reduced and capacity is decreased by 5—10%. The use of an inlet box duct on a fan can reduce capacity by as much as 25% unless there are turning vanes in the duct. Use of the vanes reduces the capacity loss to around 5%. 

One factor contributing to the inefficiency of a fuel ceU is poor performance of the positive electrode. This accounts for overpotentials of 300—400 mV in low temperature fuel ceUs. An electrocatalyst that is capable of oxygen reduction at lower overpotentials would benefit the overall efficiency of the fuel ceU. Despite extensive efforts expended on electrocatalysis studies of oxygen reduction in fuel ceU electrolytes, platinum-based metals are stiU the best electrocatalysts for low temperature fuel ceUs. 

Very unstable modifications, like the reddish, chlorine-free a-copper phthalocyanine, can be stabilized with amides or salts of copper phthalocyanine sulfonic acids (59—63). Mixture with other metal phthalocyanines, eg, tin, vanadium, aluminum, or magnesium, also inhibits crystallization change and poor performance in binders and prints (flocculation) due to the hydrophobic character of unsubstituted phthalocyanines. 

Knight and Allen. This is a copper reduction method for reducing sugars in white sugar up to 0.02%. It utilizes EDTA to determine excess unreacted copper. Tests undertaken in 1994 to extend the range of this method were unsuccesshil. In spite of poor performance in ring tests, it remains an official ICUMSA method. 

Marine and hydraulic-oil coolers use these characteristics to enhance the coefficient of otheiwise poorly performing fluids. The higher metallurgies in marine applications like 90/10 Cu-Ni afford the higher cost of plate-fin design to be offset by the less amount of alloy material being used. On small hydrauhc coolers, these fins usually allow one to two size smaller coolers for the package and save sldd space and initial cost. 

Precipitation and flocculation can be integrated into more complex treatment systems. The performance and reliability of these processes depends greatly on the variability of the composition of the waste being treated. Chemical addition must be determined using laboratory tests and must be adjusted with compositional changes of the waste being treated or poor performance will result. 

Class E Unacceptable performance that can be neutralized. This is the class of those cases where you may be able to compensate for poor performance if they are sole subcontractors of the product or service. 

Don t constrain yourself to purchase only from approved suppliers unless your customer demands otherwise - compensate for poor performers through subcontractor/supplier controls. 

To maintain and improve competitive position — To avoid costs of poor performance... 

Owners who don t want the value of the company to be harmed by poor performance. 

Measurement must address end-of-pipe performance (through measures such as injury rates and gallons spilled), process efficiency and indicators of performance (through measures such as in service failure of equipment). Using indicators should make it possible to identify problems before they result in poor performance. Process efficiency measurement helps track implementation of the project and continuous improvement in the use of resources. 

Q This redesign, like all the others that have been implemented, will put the responsibility for safety and environment onto the shoulders of operators and technicians. Management will now to able to put the blame for poor performance elsewhere. 

In areas where codes are well enforced, the stock of poor performing new buildings has been reduced to a minimum, and... 

For the sake of standardization and de eloping a feel on the part of the designer for the effect of arious design variables on tray performance, the Tin. cap (or 3> -in. or 4%-in.) caps are recommended as good general purpose units. This means that any application from a 2..5-ft dia. to 10-ft dia. tow er is first evaluated using the Tin. cap. If there are points of poor performance, cap sizes can be... 

Starve the air inlets - insufficient air results in poor performance (Figure 34.14). 

Forget about make-up - water starvation means poor performance, vortexing, pump and motor failure. 

Fail to check on water treatment - inadequate treatment and haphazard slug dosing can lead to poor performance, damage to associated equipment and failure to meet discharge requirements. 

Project managers find many opportunities to provide feedback to those who have a hand in completing the project. Through feedback, individuals learn about the effect their behavior has on others and on the project s success. It serves to maintain good performance and correct poor performance. To be effective, however, feedback must be handled properly. This illustration shows the continuous loop that exists when there is good feedback ... 

These values are poor compared with lithium-ion cells, whose corresponding values are 500 cycles and above 130 °C. This poor performance is explained mainly by the characteristics of the lithium-metal anode, and specifically its low cycling efficiency. 

Chao and Seader assume that the partial molar volumes are independent of composition this assumption is equivalent to saying that at constant temperature and pressure there is no volume change upon mixing the pure liquid components, be they real or hypothetical. The term on the right-hand side of Eq. (46) is assumed to be zero for all temperatures, pressures, and compositions. This assumption is very poor near critical conditions, and is undoubtedly the main reason for the poor performance of the Chao-Seader correlation in the critical region. 

The aim is to predict the future state of a coating by timely electrochemical measurements. These predictions could then be used to determine the remaining useful life, or the optimal time until recoating. A secondary aspect is that the results of these analyses may be useful in screening out poorly performing coatings from early measurements. 

Finally, the phosphine-functionalised carbene complex 40 (Fig. 4.14) has been tested following activation with [H(Et20)][B Ar "] [45], but again a very low activity was achieved (TON 129 after 2 h). The poor performance of these catalysts may also reflect their susceptibility to reductive elimination (of 2-acylimidazolium salt) and generation of Pd(0) [4, 5]. Interest in CO/aUcene seems to have dwindled recently, and as such no further reports on carbene complexes catalysing this reaction have appeared since 2003. 

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