DOE - Fossil Energy Techline - Issued on:  June 11, 2001

New Projects Focus on High-Strength Materials for Futuristic Vision 21 Plants

Part of DOE R&D Effort to Develop Emission-Free
Coal and Other Fossil Energy Power Plants

Morgantown, WV - High-strength materials will be one of the critical requirements for the high-tech power plants of the future, so the U.S. Department of Energy will use the third and final round of its current Vision 21 competition to concentrate on two projects that will help improve the strength and durability of tomorrow's metals.

Vision 21 is an Energy Department research and development effort that looks to the day when energy plants - including those that use coal - would be practically emission free. In two competitions to date, the department has selected a wide array of advanced technologies that ultimately would form the "building blocks" for this ultra-clean futuristic power plant.

Now, the department has selected proposals from Texas A&M University, College Station, TX, and the University of Pittsburgh, Pittsburgh, PA, to study ways to improve the materials in a key section of the future plant: the turbine.

The two universities will focus on making the blades of Vision 21 turbines capable of withstanding the high operating temperatures needed to achieve the superior performance levels envisioned for these new plants.

Future Vision 21 plants will be designed to run on a variety of fuels -- clean natural gas as well as fuels with more impurities, such as coal or possibly a combination of feedstocks such as biomass, municipal wastes, or petroleum coke.

To boost overall fuel-to-energy efficiencies, a Vision 21 plant would likely convert these fuels into gaseous form that would be fired in high-temperature, high-efficiency gas turbines. The blades must be made strong and durable enough to withstand the harsh, often corrosive effects of the hot gases. When impurities are present in the high-velocity gases, the technical challenge of protecting the turbine blades is even greater.

The Texas A&M Project

Texas A&M researchers will develop a model that describes the way single-crystal turbine blades respond to high temperatures. An especially important part of the project will be to observe how defects form at high temperatures and move through the structural lattices of the turbine blades.

The university researchers will be joined in the 3-year project by engineers from the New Jersey Institute of Technology, Newark, NJ, and GE Research, Niskayuna, NY. The Energy Department will provide nearly $354,000 of the project's $443,000 total cost. The rest will come from the private sector participants.

The University of Pittsburgh Project

The University of Pittsburgh will work on improving the durability of turbine components with a goal of making them strong enough to withstand the effects of impurities that may be present in the high temperature gases. Pitt researchers will apply a dense overlay of aluminum oxide on the surface of turbine blades to create a corrosion-resistant coating.

The Energy Department's share of the $504,000 project, also planned to run over three years, will be approximately $333,000, with the remainder contributed by the University and its research partners.

A Pollution-Free Power Future

Vision 21 is one of the highest priorities in the Energy Department's longer-range fossil fuel power technology program. By 2015, if the pace of development can be sustained, the department expects to have the technical foundation in place for a new fleet of energy plants that would emit virtually no pollution. Combined with new technologies to capture and store carbon dioxide, a Vision 21 plant would also reduce, or even eliminate, the problem of greenhouse gas releases from coal and other fossil fuel power plants.

In its initial competition, where the first "modules" of a Vision 21 plant are taking shape, the Energy Department is spending $22 million over three years. Ultimately, as the concepts mature, the department expects that emerging Vision 21 technologies will move into President Bush's new Clean Coal Power Initiative, an effort that envisions a $2 billion clean coal technology investment over the next 10 years.

The Vision 21 effort is part of the Energy Department's fossil energy research and development program and is managed by the National Energy Technology Laboratory.

- End of Techline -

For more information, contact:
Robert C. Porter, DOE Office of Fossil Energy, 202-586-6503, e-mail: robert.porter@hq.doe.gov

Technical Program Contact:
Dr. Lawrence Ruth, DOE National Energy Technology Laboratory, 412-386-4461, e-mail: ruth@netl.doe.gov