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PE Volume 102 Issue 7
explain to some extent the amazing longevity of the pneumatic actuator. These same limitations also led to the development of "electraulic" actuation technology. These actuators are self-contained, pressurized hydraulic units, containing a minimal volume of conventional motor oil. They are being applied in numerous power plant applications where extreme service conditions, close control or high reliability is warranted. To appreciate the value of electraulic technology, it is important to unders
differences in altitude, ambient temperature, fuel type, load conditions etc. The environment inside the turbine can also play a role, primarily through its impact on internal components and their protective coatings. When a coating fails prematurely, turbine performance can degrade significantly.
unfolds. The Btu convergence spawned by power deregulation dogging the heels of earlier gas industry deregulation is at the heart of an unprecedented series of proposed and completed mergers between natural gas pipeline/distribution companies and electric utilities. A stream of mergers, partnerships, alliances and other cooperative agreements is running rampant throughout the industry--the brand new Btu industry that is. As industry lines, and corporate lines, continue to blur and blend, those w
The Gas Research Institute`s Power Generation Business Unit reports seeing some promising results for the electric generation industry with a new technology called fuel-lean gas reburning (FLGR), formerly known as controlled gas injection. The technology is being developed and tested by Energy Systems Associates (ESA), with GRI and member company support.
The reliability of conventional dam gates can be questionable. As many as 30 percent of gated dam failures are due to gates not opening because of mechanical problems, loss of power or operator error. These problems have led many dam builders to incorporate uncontrolled spillways, gaining safety at the expense of potential storage capacity.
The Stanton Steam Power Plant in Orlando, Fla., recently upgraded a bus duct system with silver plating to prevent oxidation. Stanton management found that brush plating could help efficiently complete the retrofit work and avoid long generator down time.
To optimize control of a 1,000 hp motor running an eight ft. diameter booster fan at its power plant, the University of Illinois-Champaign/Urbana chose ABB`s ACS 1000 medium-voltage AC drive. The new drive will operate the fan`s 10-year-old AC motor at 4.16 kV. It was previously controlled with inlet vanes.