POWER

In late January, a 1.5-MW concentrating solar power (CSP) plant began providing power to Salt River Project customers in Greater Phoenix, Ariz. Though small, the plant, developed by Tessera Solar and Stirling Energy Systems (SES), is seen as a prelude to 1,500-MW projects that are due to break ground in California and Texas later this year.

Every power engineer must have a firm grasp of the rudiments of how fuel is processed to produce electricity in a power generation facility. With this article, we begin a series of Power 101 tutorials that present these fundamentals in a clear and concise way. First up are the essentials of recovering heat from flue gas.

During a recent meeting of state utility commissioners, the CEO of a Fortune 500 electric power company said natural gas prices promise reliability but "always break your heart." What breaks my heart is the electric power industry’s ongoing love affair with natural gas. Using natural gas for generating electricity is not the best or highest use for this clean, green, and domestically abundant resource.

The "combined" portion of a combined-cycle plant is the heat-recovery steam generator (HRSG) that generates high-pressure and high-temperature steam and the steam turbine generator that expands the steam to produce electricity. Integrating the HRSG and steam turbine with the combustion turbine is a key challenge for plant designers, as each system has differing operating profiles, operational constraints, and design requirements.

While the Environmental Protection Agency appears to have initially proposed to regulate power plant coal ash as hazardous waste, there are indications the Obama administration is preparing new federal rules that will at a minimum require utilities to convert coal ash impoundments from wet to dry storage to prevent leaks—a change that would cost tens of millions of dollars but also potentially increase regulated utilities’ rate base and earnings, a Wall Street firm says.

CAT PUMPS recently introduced two new stainless steel triplex plunger pumps featuring a 316 stainless steel liquid-end for corrosion resistance. The 7CP6111 and 7CP6171 are designed for pumping liquids like seawater in small seawater reverse osmosis installations, demineralized water for misting, or hot water and sanitizers for sterile cleaning systems. The 7CP stainless steel pumps […]

Highlighting a sharp division within the public power community, two senior House Democrats blasted the American Public Power Association for endorsing Sen. Lisa Murkowski’s effort to strip the Environmental Protection Agency of its Clean Air Act authority to regulate greenhouse gas emissions, with the lawmakers saying they have been informed that “numerous” APPA members oppose the endorsement.

Sensing and monitoring systems supplier Meggitt PLC launched the Endevco model 6634C, a microprocessor-based vibration amplifier that has been designed to condition and display rotating machinery data in simultaneous outputs, such as broadband, acceleration, velocity, and displacement. Model 6634C is designed to accept inputs from a single-ended, differential piezoelectric or ISOTRON (IEPE-type) accelerometer, velocity coil, […]

In a move that could cost the state’s electricity generators an estimated $8.5 billion, New York regulators [have] issued a draft policy that would require the installment of closed-loop cooling systems at two dozen large power plants in the state, including oil, coal, nuclear and natural gas generators, to reduce fish kills and other harmful effects to wildlife in the water bodies that supply the plants’ cooling water.

ESAB Welding & Cutting Products’ LAF series of three-phase, fan-cooled DC welding power sources are designed for high-productivity mechanized submerged arc welding or high-productivity GMAW welding. Made for use in combination with ESAB’s A2-A6 equipment range and the A2-A6 Process Controllers (PEK or PEI), LAF welding power sources offer excellent welding characteristics throughout the entire […]

Why did the Environmental Protection Agency (EPA) drop the Cone of Silence around the good news about the continuing trend of improved air quality? The agency’s annual report of air quality trends was released in mid-March with barely a whisper. Even the major media outlets failed to report on the excellent results.

Honeywell has added universal input/output (I/O) transmitters to its family of XYR 6000 wireless products. The transmitters allow manufacturers to wirelessly monitor more plant points with fewer devices. The company says that by transmitting signals from up to three different types of inputs — including measurement devices with a high-level analog, temperature or milli-volt, or […]

Biomass has many advantages as a fuel for boilers: It’s inexpensive, readily available in many regions, CO₂ neutral, and its use warrants government subsidies. The fuel also presents unique concerns to the designers, owners, and operators of biomass plants, especially in the design of the control system.

I’m often asked about my source of ideas for this space each month. I have two primary sources of subject material. First, I read the industry news every day and save those items that either annoy or agitate me. At the end of the month, I go over the list, often a long one, and pick the one item that immediately motivates me to take virtual pen to paper. This month, no single item emerged as the topic for my bully pulpit, so I present a potpourri of loosely connected topics for your consideration. (It should be noted that other things bug other members of the editorial staff; we’re a diverse group and do not always agree about industry issues.)

UK-based Sherborne Sensors has introduced the LSI series of closed-loop gravity-referenced servo inclinometers to the North American market. The family of inclinometers is specially designed to withstand severe shock and vibration inputs for precise measurements in demanding environments. The series incorporates a unique, flexure-supported torque-balancing system that is rugged enough to withstand shock inputs of […]

Siemens Hands Over 870-MW Dutch Gas Plant. Siemens Energy on Feb. 12 handed over the 870-MW Sloecentrale combined-cycle power plant to the joint venture of Dutch company Delta Energy and Electricité de France. The natural gas – fired plant in the Dutch town of Vlissingen-Oost reportedly has an efficiency of 59% and uses a state-of-the-art […]

High-speed imaging systems manufacturer Photron introduced hardware to extend the normal operating temperature range of the Fastcam SA5 and Fastcam SA2 high-speed cameras. The Range Version (RV) is a new sealed case design that makes the camera models impervious to dirt, dust, and sand. Photron’s RV option includes two serviceable external fans that direct cooling […]

Nearly every combined-cycle operator recognizes that cycling reduces the life expectancy of hot-gas-path components in combustion turbines. Often overlooked, however, is that the same phenomenon affects the heat-recovery steam generator (HRSG).

Early last year, there were promising signs that electric transmission line construction would be facilitated by the convergence of the new administration’s emphasis on developing remote renewable generation resources, proposed legislative provisions expanding federal siting authority, and the granting by the Federal Energy Regulatory Commission (FERC) of generous cost-of-service returns on such investments. However, the stars did not align for transmission policy in 2009 as had been hoped, and the forecast is cloudy.

Greensburg was destroyed by an EF5 tornado on May 4, 2007. Instead of abandoning the Kansas town, the community quickly embraced the task of rebuilding it from the ground up, maximizing the use of renewable energy sources and energy efficient building techniques. Rebuilding continues, but the future of Greensburg has never been stronger.

In response to Ontario’s provincial regulatory mandates to phase out the use of coal by the end of 2014, Ontario Power Generation (OPG) is exploring its capability to employ biomass feedstocks to displace coal in some units within the OPG thermal fleet. The primary fuels employed during the respective trials at its Nanticoke and Atikokan Generating Stations have been agricultural by-products and commercial grade wood pellets. The Canadian utility has learned valuable lessons about fuel supply and logistics, and the technical challenges of safely handling and firing high levels of biomass.

President Barack Obama’s January State of the Union speech called for incentives to make clean energy profitable — mainly through the construction of a new generation of nuclear power plants. That comment, an apparent effort to reach out to Republican members of Congress, drew furious applause. Within three weeks, the president’s backing of nuclear power had already made a significant impact on the U.S. nuclear sector.

The EUCG Nuclear Committee has collected benchmarking data of U.S. nuclear plant staffing for many years. A summary of this highly desirable data was gleaned from EUCG databases and is now, for the first time, made public through an exclusive agreement with POWER.

Scientists at Lawrence Livermore National Laboratory’s National Ignition Facility (NIF) in California speculate that a prototype nuclear fusion power plant could be operational within a decade, thanks to a test of the world’s largest laser array that confirmed a technique called inertial fusion ignition is feasible. Their first experiments have demonstrated a unique physics effect that bodes well for NIF’s success in generating a self-sustaining nuclear fusion reaction. Fusion energy is what powers the sun and stars.

The power industry needs a straightforward definition of "fleet optimization" and a game plan to achieve the promised economic gains of optimizing. This need has become more urgent because integrating nondispatchable renewable resources requires more complex optimization strategies. The bottom-up approach presented here applies well-understood optimization principles and techniques that will help power producers minimize their fleetwide cost of production, independent of the technologies used to generate electricity.

Could the transformation of carbon dioxide (CO₂) into carbonates and oxides solve the problem of greenhouse gas emissions (GHG) from fossil-fired power plants? Some companies are betting that such processes could make everyone happy and even create new profits. Buzz has been growing about this approach, though the concept has been around for many years.

By Kennedy Maize Washington, April 2, 2010 — Greenpeace doesn’t like cloud computing. The out-on-the-edge environmental group also doesn’t much care for Apple’s upcoming IPad computer platform, which adds to the data content of the cloud. Why is this? Because the data cloud, and its associated applications such as the IPad, dwell on server islands […]

Vietnam and the United States have signed an agreement that will allow U.S. companies to work in Vietnam to develop atomic power for energy.

Under a final decision issued Monday by the U.S. Environmental Protection Agency (EPA), no stationary sources, including power plants, will be required to get Clean Air Act permits that cover greenhouse gases (GHGs) before January 2011.

For the first time, China led the U.S. and other G-20 members in 2009 clean energy investments and finance, according to data released Thursday by The Pew Charitable Trusts. Last year, China invested $34.6 billion in the clean energy economy—nearly double the U.S. total of $18.6 billion. Over the past five years, the U.S. also […]