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140
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Advanced on-board electric vehicle charger. Final report
The design and development of an on-board charger power module for use in electric vehicles is described. The module operates at 20KHz in a series resonant, half bridge configuration. Circuit design trade-offs, module performance, and solutions to the problems of acoustic noise, maintaining high power factor, circuit protection and operating reliability are discussed. The power module operates from a single phase, 240 V, 50/60 Hz utility line. Average power factor is 0.90; efficiency at maximum power output is 86%. The module is rated to charge a bank consisting of 20 Exide EV-106 batteries (60 cells) to an end voltage of 2.42 V/cell. Physically, the module weighs less than 17 Kg. Projected manufacturing cost at the thousand unit level is $394.00 (1978 dollars).
Date:
December 31, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Aerial Radiometric and Magnetic Survey: Austin National Topographic Map, Texas Gulf Coast, Volume 1
This report is the first volume of a two-part set documenting the results of the analyses of the airborne gamma radiation and total magnetic field survey that was flown for the Austin National Topographic Map NH14-6.
Date:
August 31, 1979
Creator:
Geodata International, Inc.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 103, No. 49, Ed. 1 Thursday, May 31, 1979
Weekly newspaper from Albany, Texas that includes local, state and national news along with extensive advertising.
Date:
May 31, 1979
Creator:
Lucas, Donnie
Object Type:
Newspaper
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 9, No. 87, Ed. 1 Thursday, May 31, 1979
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 1979
Creator:
Camper, Buddy
Object Type:
Newspaper
System:
The Portal to Texas History
The Allen American (Allen, Tex.), Vol. 10, No. 46, Ed. 1 Monday, December 31, 1979
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1979
Creator:
Camper, Buddy
Object Type:
Newspaper
System:
The Portal to Texas History
The Altus Times-Democrat (Altus, Okla.), Vol. 53, No. 26, Ed. 1 Wednesday, January 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 31, 1979
Creator:
Gilmore, Robert K. & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times-Democrat (Altus, Okla.), Vol. 55, No. 124, Ed. 1 Thursday, May 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 1979
Creator:
Gilmore, Robert K. & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times-Democrat (Altus, Okla.), Vol. 55, No. 176, Ed. 1 Tuesday, July 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 31, 1979
Creator:
Gilmore, Robert K. & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times-Democrat (Altus, Okla.), Vol. 55, No. 203, Ed. 1 Friday, August 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 31, 1979
Creator:
Gilmore, Robert K. & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times-Democrat (Altus, Okla.), Vol. 55, No. 255, Ed. 1 Wednesday, October 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 1979
Creator:
Gilmore, Robert K.; Hale, Dave & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times-Democrat (Altus, Okla.), Vol. 55, No. 306, Ed. 1 Monday, December 31, 1979
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1979
Creator:
Gilmore, Robert K.; Hale, Dave & Hart, Sandra
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 89, No. 167, Ed. 1 Thursday, May 31, 1979
Daily newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 1979
Creator:
Looney, Richard
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 89, No. 210, Ed. 1 Tuesday, July 31, 1979
Daily newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
July 31, 1979
Creator:
Looney, Richard
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 90, No. 18, Ed. 1 Friday, August 31, 1979
Daily newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
August 31, 1979
Creator:
Looney, Richard
Object Type:
Newspaper
System:
The Portal to Texas History
Annual progress report
The research topics covered include a study of the nonlinear behavior of the drift cyclotron loss-cone instability in mirror machines and a study of the longer time behavior of the nonlinear O'Neil trapped particle saturation. The saturation amplitude for a single dominant mode near the stability onset boundary was determined for the drift cyclotron loss-cone instability for a variety of mirror-like distributions. The results are in good agreement with computer simulation studies of Cohen and Maron.
Date:
August 31, 1979
Creator:
Simon, A.
Object Type:
Report
System:
The UNT Digital Library
Application of solar energy to industrial drying of soybeans: Phase III, performance evaluation. Final report
A 15-month performance evaluation was conducted on a solar system designed and constructed to augment the industrial drying of soybeans at the Gold Kist, Inc., extraction plant in Decatur, Alabama. The plant employs three oil-fired, continuous-flow dryers of 3,000 bu/hr each. The solar system consists of 672 Solaron air collectors that temper the airflow into the existing dryers. Since the requirement for energy exceeds the peak solar system capacity, no storage is provided. The interface with the existing facility is simply accomplished by three ducts that release the solar heated air directly adjacent to the dryer air intakes, and no mechanical coupling is needed. The solar system was operated for 1,752 hr on 290 days during the 15-month period without a single failure sufficient to cause shutdown. No interference with normal plant operations was experienced. Maintenance of the solar system, consisting of service to the air handling unit, cleaning of collector glazing, and minor duct repair, totaled $1,564. System utilization was only 46.3%. This was primarily due to daytime routine maintenance performed on the conventional drying and processing equipment. The solar fraction was not large enough to justify maintenance shift changes. An average collector efficiency of 26.2% was experienced. Contamination …
Date:
October 31, 1979
Creator:
Hall, B. R.
Object Type:
Report
System:
The UNT Digital Library
APPLICATIONS OF THERMAL ENERGY STORAGE TO WASTE HEAT RECOVERY IN THE FOOD PROCESSING INDUSTRY, Final Report
A project is discussed in which the possibilities for economical waste heat recovery and utilization in the food industry were examined. Waste heat availability and applications surveys were performed at two manufacturing plants engaged in low temperature (freezing) and high temperature (cooking, sterilizing, etc.) food processing. The surveys indicate usable waste heat is available in significant quantities which could be applied to existing, on-site energy demands resulting in sizable reductions in factory fuel and energy usage. At the high temperature plant, the energy demands involve the heating of fresh water for boiler make-up, for the food processes and for the daily clean-up operation. Clean-up poses an opportunity for thermal energy storage since waste heat is produced during the one or two production shifts of each working day while the major clean-up effort does not occur until food production ends. At the frozen food facility, the clean-up water application again exists and, in addition, refrigeration waste heat could also be applied to warm the soil beneath the ground floor freezer space. Systems to recover and apply waste heat in these situations were developed conceptually and thermal/economic performance predictions were obtained. The results of those studies indicate the economics of waste heat …
Date:
July 31, 1979
Creator:
Lundberg, W. L. & Christenson, James A.
Object Type:
Report
System:
The UNT Digital Library
The Archer County News (Archer City, Tex.), Vol. 62nd YEAR, No. 21, Ed. 1 Thursday, May 31, 1979
Weekly newspaper from Archer City, Texas that includes local, state and national news along with advertising.
Date:
May 31, 1979
Creator:
Lobpries, F. Mike
Object Type:
Newspaper
System:
The Portal to Texas History
[Austin Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Austin Quadrangle in Texas.
Date:
August 31, 1979
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
[Austin Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Austin Quadrangle in Texas.
Date:
August 31, 1979
Creator:
Geodata International, Inc.
Object Type:
Dataset
System:
The UNT Digital Library
The Bandera Bulletin (Bandera, Tex.), Vol. 34, No. 47, Ed. 1 Thursday, May 31, 1979
Weekly newspaper from Bandera, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 1979
Creator:
Saul, Myra
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), No. 27, Ed. 1 Thursday, May 31, 1979
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date:
May 31, 1979
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), No. 86, Ed. 1 Monday, December 31, 1979
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date:
December 31, 1979
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop County Times (Smithville, Tex.), Vol. 88, No. 22, Ed. 1 Thursday, May 31, 1979
Weekly newspaper from Smithville, Texas that includes local, state and national news along with advertising.
Date:
May 31, 1979
Creator:
Stewart, Lisbeth Lockwood
Object Type:
Newspaper
System:
The Portal to Texas History