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Advances in high temperature components for AMTEC (alkali metal thermal-to-electric converter)
Long lifetimes are required for AMTEC (or sodium heat engine) components for aerospace and terrestrial applications, and the high heat input temperature as well as the alkali metal liquid and vapor environment places unusual demands on the materials used to construct AMTEC devices. In addition, it is important to maximize device efficiency and power density, while maintaining a long life capability. In addition to the electrode, which must provide both efficient electrode kinetics, transport of the alkali metal, and low electrical resistance, other high temperature components of the cell face equally demanding requirements. The beta{double_prime} alumina solid electrolyte (BASE), the seal between the BASE ceramic and its metallic transition to the hot alkali metal (liquid or vapor) source, and metallic components of the device are exposed to hot liquid alkali metal. Modification of AMTEC components may also be useful in optimizing the device for particular operating conditions. In particular, a potassium AMTEC may be expected to operate more efficiently at lower temperatures.
Date:
December 31, 1991
Creator:
Williams, R. M.; Jeffries-Nakamura, B.; Underwood, M. L.; Ryan, M. A.; O`Connor, D. & Kikkert, S.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 91, No. 247, Ed. 1 Tuesday, December 31, 1991
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1991
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 70, No. 52, Ed. 1 Tuesday, December 31, 1991
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1991
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Chemically Assisted in Situ Recovery of Oil Shale. [Quarterly Report], October 1, 1991--December 31, 1991
The objective of this work is to investigate, in the laboratory, the parameters associated with a chemically assisted in situ recovery procedure, using hydrogen chloride (HCI), carbon dioxide (CO{sub 2}), and steam (H{sub 2}O), to obtain data useful to develop a process more economic than existing processes and to report all findings. The technical progress of the project is reported. The project status is that the solutions to the problems discussed in the third quarter status, were found to function satisfactorily. Future needs have been considered, and appropriate equipment and instrumentation changes have been designed. Only one experiment was performed this quarter, with some improvement over the previous experiments. The increase in shale oil recovery followed directly from the changes discussed last quarter, but the improvement could have been larger with wider-spread implementation of the changes. Equipment was purchased to rectify the need, and will be installed shortly. Further, a minor change in the design was necessary to account for the brittleness of high temperature electrical resistance heating tapes. The focus of the work this quarter has been on the development of computer software to enable the use of on-line parameter identification, the design of the instrumentation necessary to adequately …
Date:
December 31, 1991
Creator:
Ramirez, W. F.
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Vol. 100, No. 250, Ed. 1 Tuesday, December 31, 1991
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1991
Creator:
Plummer, George
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Harper Herald (Harper, Tex.), Vol. 66, No. 100, Ed. 1 Tuesday, December 31, 1991
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1991
Creator:
Ernst, Peggy
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from James S. Breeden to John Thomas]
A letter from James S. Breeden to John Thomas discussing another enclosed letter from Don McCleary.
Date:
December 31, 1991
Creator:
Breeden, James S.
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Oak Lawn Concerned Citizen's Coalition Steering Committee to Oak Lawn Community Friends dated December 31, 1991, and memo from Lori Palmer to Peter Brooks]
Letter to "Friends of the Oak Lawn Community" from the Oak Lawn Concerned Citizens Coalition on December 31, 1991. Informs of the group's formation and first meeting, scheduled for January 9, 1991. Includes a transmittal memorandum from Lori Palmer to Peter Brooks on January 14, 1991.
Date:
December 31, 1991
Creator:
Oak Lawn Concerned Citizen's Coalition Steering Committee
Object Type:
Letter
System:
The UNT Digital Library
[News Clip: Alternative]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bank Robbery]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Dallas Smoking]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: EPA Lead]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: GM-Bush]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Lead Removal]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 6:30 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Lead Removal]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 6:30 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: New Year Idea]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 31, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Oklahoma City NAACP program activity report
Program report for the Oklahoma City branch of the NAACP.
Date:
December 31, 1991
Creator:
unknown
Object Type:
Report
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 98, No. 275, Ed. 1 Tuesday, December 31, 1991
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1991
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0101.0560]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Rawsie and Nancy Boyles enjoy the holiday party."
Date:
December 31, 1991
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0387.0356]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Laurie McCann, left, and daughter, Margo, help, help Santa with door duties."
Date:
December 31, 1991
Creator:
Sanger, Helen Ford
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0931.0267]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Corey Hovis and Nick Young perform an impromptu noisemaker duet Tuesday night during the Opening Night '91 New Year's celebration in downtown Oklahoma City."
Date:
December 31, 1991
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1292.0125]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ann Felton, left, and Marilyn Torbett have early morning coffee at the recent birthday party honoring pam Smith, who did not attend."
Date:
December 31, 1991
Creator:
Sanger, Helen Ford
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1335.0404]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dana McGuire, left, talks with hostesses Lisa and Barbara Vose, right."
Date:
December 31, 1991
Creator:
Sanger, Helen Ford
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1990--31 March 1991
The polycrystalline nature of thin-film CdTe and CuInSe{sub 2} solar cells continues to be a major factor in several individual losses that limit overall cell efficiency. This report describes progress in the quantitative separation of these losses, including both measurement and analysis procedures. It also applies these techniques to several individual cells to help document the overall progress with CdTe and CuInSe{sub 2} cells. Notably, CdTe cells from Photon Energy have reduced window photocurrent losses to 1 mA/Cm{sup 2}; those from the University of South Florida have achieved a maximum power voltage of 693 mV; and CuInSe{sub 2} cells from International Solar Electric Technology have shown a hole density as high as 7 {times} 10{sup 16} cm{sup {minus}3}, implying a significant reduction in compensation. 9 refs.
Date:
December 31, 1991
Creator:
Sites, J. R.
Object Type:
Report
System:
The UNT Digital Library