Lesson Plan 3
Created by Teachers, Engineers, and Scientists
Lesson Plan Created By:
Nancy Hazuka (Grades 9 - 12)
Mary Jane Glitz (Grades 9 - 12)
David L. Herring (Grades 9 - 12)
David L. Murray (Grades 6 - 8)
In Collaboration With:
J. Christopher Ludlow, Ph.D., Chemical Engineer
United States Department of Energy
National Energy Technology Laboratory
BACKGROUND /INFORMATION FOR FLUIDIZED BEDS
Fluidized-bed combustion provides a highly efficient means of generating low-cost electricity from coal and other fuels with minimal impact on the environment. This promising new technology will enable our Nation to continue to rely on coal to help meet our growing energy needs in the future, and at the same time, help solve environmental problems. It is also expected to capture a share of the emerging global market for cleaner power generation technologies. Power Magazine has called the development of fluidized-bed coal combustors "the commercial success story of the last decade in the power generation business." U.S. Department of Energy - National Energy Technology Laboratory Fluidizied-Bed Combustion [April 1998]
A major goal of the United States Department of Energy’s Fluidized Bed Combustion System is to reduce sulfur emissions by 99%, oxides of nitrogen by 95%, and CO2 by 25%. These advanced units should operate in excess of 50% efficiency and cost approximately 25% less to build than today’s conventional non-fluidized bed combustion units.
|Fluidized Bed Lesson Plan
Duration: 5 (40 minute) sessions
The students will describe the purpose and components of a Fluidized Bed.
The student will demonstrate knowledge of scientific vocabulary used in Fluidized Bed Construction.
The students will attain an appreciation for the benefits of a Fluidized Bed as it pertains to their environment.
The student will construct a small- scale functional Fluidized Bed from common household materials.
The student will gain an appreciation for the work done by scientists to solve energy and environmental problems.
Fluidized Bed Combustion Technology is one of the technologies being developedby the Department of Energy at its Federal Energy Technology Center. It is a technology which can burn coal without the need for expensive pollution control technology. During fluidized bed combustion, pollutants are captured very soon after they are generated and are never released into the environment. The technology has proven to be a potential means of lowering the cost of electricity production while maintaining a high standard of living. Because of the increased operating efficiency of a fluidized bed combustion system, greenhouse gases will be reduced as well as the United States’ dependance on imported fuels. We can reduce the use of our valuable limited resources in the production of electricity.
In addition to burning coal, fluidized bed combustion technology can be used to burn many waste materials like municipal trash, and hospital medical waste.
There are two types of fluidized combustion systems: atmospheric and pressurized. Atmospheric systems, as the name implies, allow the combustion to occur at atmospheric pressure while in pressurized ones, the combustion occurs at increased pressure. Operation at elevated pressures result in a high pressure gas stream that is used to drive a gas turbine for creating electricity.