The global power sector is facing a number of issues, but the most fundamental challenge is meeting the rapidly growing demand for energy services in a sustainable way. This challenge is further compounded by the today’s volatile market rising fuel costs, increased environmental regulations, etc. Plant owners are challenged to prepare for the impact of future fuel price increases and carbon tax...

Variable-speed centrifugal compressors are used in a wide variety of industries and applications, including natural gas pipelines and processing plants, oil refineries and chemical plants, air-separation units, refrigeration and air conditioning equipment refrigerant cycles, gas turbines and auxiliary power generators, and many more. Some natural gas plants, for example, employ a propane-precoo...

the control of fluidized-bed operations processes is still one of the major areas of research due to the complexity of the process and the inherent nonlinearity and varying dynamics involved in its operation. there are varieties of problems in chemical engineering that can be formulated as nonlinear programming (nlps). the quality of the developed solution significantly affects the performance ...

input frequency is one of the important variables in design and performance analysis of single-sided linear induction motors (slims). changing the frequency changes both the dimension of the slim in design process and the performance of the designed motor. the frequency influences the induced eddy currents in the secondary sheet as well as saturation level of the secondary back-iron. in this pa...

So far, this study has examined the ways in which colleges and universities approach administrative business processes and how they use technology to support those processes. This chapter examines the approaches and technologies institutions have adopted to improve business process performance, and then discusses some emerging cross-industry trends and how these may impact future efforts to imp...

The difference between the performance of TSVs manufactured using SF6/O2 plasma etching or a Bosch process is explored through simulations. The geometric ratio of the sample TSV is approximately 5μm:58μm. The electrical performance of the devices is explored through capacitance and resistance extraction, while the reliability is analyzed using thermo-mechanical and electromigration simulations ...

The paper presents the performance of a novel distributed bus differential protection scheme, which utilizes independent multi-principle advanced protection algorithms, including differential percent slope, delta phase directional comparison, rate of change of differential (ROCOD) currents, delta phase directional comparison on neutral current differential, and a check zone to secure the electr...

It is increasingly important to evaluate the performance of business processes. A key instrument to carry out this evaluation is by means of Process Performance Indicators (PPIs) as suggested in many methodologies and frameworks like, for instance, COBIT, ITIL or EFQM. As a consequence, it is convenient to integrate the management of PPIs into the whole business process lifecycle from its desig...

In the refining industry, process optimization typically begins with a process engineer collecting operation data to perform a heat and weight balance and to evaluate the catalyst activity. Based on the current trends and operating conditions, the setpoint(s) on critical process control loops (loops that affect unit stability and bottom line economic benefits) may need to be adjusted manually o...