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Energy Newsbriefs Blog

This current awareness service is prepared by the WSU Energy Program Library with funding from the U.S. Department of Energy State Energy Program. This information is provided for energy professionals and interested members of the public to highlight recent energy-related news, articles, and reports that discuss energy efficiency, energy conservation, and renewable sources of energy in engineering and policy circles.

 

Category: Industrial

Industrial


Steam Turbine Retrofits: Methods to Extend Turbine Life and Improve Performance

Power Engineering, Feb. 2017, by Muhammad Saqib Riaz. http://www.power-eng.com/articles/print/volume-121/issue-2/features/steam-turbine-retrofits.html "A steam turbine is designed and optimized for a specific set of steam conditions. After long term operations either the steam path components deteriorate or due to changes in steam conditions, a re-optimization of the steam path components is required to regain higher turbine performance. Steam Turbine retrofits are performed to achieve various goals such as improved turbine efficiencies, heat rate or power output. Retrofits are also performed to address turbine reliability and or maintenance issues. Availability of newer technologies and materials for steam path components can be utilized to not only increase steam turbine performance, but also to extend maintenance intervals, and extend life. Retrofits can also accommodate required changes to the thermal cycle based on emerging needs of the power plant. The effectiveness of the retrofit is achieved by ut ... Read the rest of entry »

Optimized Energy Recovery

ASHRAE Journal, Jan. 2017, by Marvin Kirshenbaum.
http://ashraecok.org/images/downloads/Technical_Literature/journal_2017_01_optimized_energy_recovery.pdf

"This article addresses extending the application of waste heat recovery to both reheat and primary heating, allowing for a heat reclaim system no longer restricted to seasonal operation."

Where To Place Air-Cooled Chillers

Engineered Systems, Feb. 2017, by Kishor Khankari.
http://www.esmagazine.com/articles/98146-where-to-place-air-cooled-chillers

"Warm discharge plumes sweeping back into air-cooled condensers is nobody’s idea of an ideal performance environment. This CFD study shows how wind speed, wind direction, spacing between chillers, and separation from adjacent buildings all factor into the conversation about the best defense against unwanted hot air."

Fluid Cooling In Data Centers — If Not Now, When?

Engineered Systems, Jan. 2017, by Kevin Dickens.
http://www.esmagazine.com/articles/98105-fluid-cooling-in-data-centers-if-not-now-when

"Trends don’t always follow the expected path (or timeline), but the basics remain the basics and increased cabinet density remains inevitable. Let’s revisit the progress of liquid in data center strategy and the tenets of a future-proof(ish) hybrid design for today."

Design of a High-Temperature-Hot-Water-Plant Expansion

HPAC Engineering, Jan. 2017, by Eric Chrencik.
http://hpac.com/heating/design-high-temperature-hot-water-plant-expansion

"There are four main components of HTHW-plant design:
  • HTHW-generator selection.
  • Pump selection.
  • Consideration of system expansion and makeup.
  • Stress analysis and piping layout.
This article discusses all four for a recently completed HTHW-plant expansion at George Mason University in Fairfax, VA."

Alcatraz: One of the Largest Microgrids in the United States

U.S. Dept. of Energy, Jan. 26, 2017, by Mike Mueller.
https://energy.gov/eere/articles/welcome-alcatraz-one-largest-microgrids-united-states

"Each year, more than 1.5 million people tour Alcatraz Island to visit its iconic prison. But, most people don’t realize that this 22-acre site, located in the middle of the San Francisco Bay, is also home to one of the nation’s largest microgrids. The island is equipped with a solar-diesel hybrid power system that most visitors probably won’t notice."

Trends in Hydronics

HPAC Engineering, Dec. 2016, by John Vastyan.
http://hpac.com/piping-pumping/trends-hydronics

"Innovations aimed at enhancing energy efficiency, improving system performance, and prolonging equipment life."

Selecting Actuators for Industrial HVAC/Process Dampers

HPAC Engineering, Dec. 2016, by Bill Lampkin.
http://hpac.com/iaq-ventilation/selecting-actuators-industrial-hvacprocess-dampers

"If it is to accomplish its intended purpose, any damper installed in a HVAC system must be equipped with an appropriate actuator. The selection of an actuator for a specific damper requires consideration of a number of factors. This article examines the actuator-selection process. (Note: While damper actuators often go by other names, such as damper motors, damper operators, and motor packs, “damper actuator” is the appropriate terminology.)"

Boiler Tune-Up Cuts J.H. Baxter’s Annual Energy Costs By An Estimated $21,100

Energy Trust Blog, Jan. 5, 2017.
https://blog.energytrust.org/boiler-tune-cuts-j-h-baxters-annual-energy-costs-estimated-21100

"A Kewanee steam boiler is the backbone of J.H. Baxter & Co.’s wood-treatment facility in Eugene [Oregon]. But over time, the boiler’s fire tubes built up a layer of soot that decreased efficiency. The solution was a simple boiler tune-up that boosted efficiency by 8.5 percent, saving more than 41,000 therms per year. Not only did the project cut the facility’s annual energy costs by an estimated $21,100—90 percent of the cost of the tune-up was paid for through Energy Trust of Oregon’s 90 by 90 industrial operations and maintenance offer."

Reducing Data Center Energy Use Means Focusing on PUE, Air Flow, LEED

Building Operating Management, Jan. 2017, by David Lewellen.
http://www.facilitiesnet.com/datacenters/article/Reducing-Data-Center-Energy-Use-Means-Focusing-on-PUE-Air-Flow-LEED---16968

"...a three-part article on how to make critical facilities more energy efficient."

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