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Literature review of the saturation state of seawater with respect to calcium carbonate and its possible significance for scale formation on OTEC heat exchangers
An investigation of available data on the saturation state of seawater with respect to calcium carbonate and its possible significance for scale formation on Ocean Thermal Energy Conversion (OTEC) heat exchangers has been carried out. Pertinent oceanographic data is lacking at or near potential OTEC sites for the calculation of the degree of saturation of seawater with respect to calcium carbonate. Consequently, only ''extrapolated'' saturation values can be used. These indicate that near surface seawater is probably supersaturated, with respect to the calcium carbonate phases calcite and aragonite, at all potential OTEC sites. The deep seawater that would be brought to the surface at the potential Atlantic Ocean sites is also likely to be supersaturated with respect to calcium carbonate. The deep seawater at the potential Pacific Ocean sites may be slightly undersaturated. The fact that OTEC heat exchangers will be operating in seawater, which is supersaturated with respect to calcium carbonate, means that if nucleation of calcite or aragonite occurs on the heat exchanger surfaces, significant growth rates of calcium carbonate scale may be expected. The potential for calcium carbonate nucleation is highest at cathodic metal surface locations, which are produced as the result of aluminum corrosion in seawater. …
Date:
April 5, 1978
Creator:
Morse, J. W.; de Kanel, J. & Craig, Jr., H. L.
Object Type:
Report
System:
The UNT Digital Library
Powerplant Productivity. Improvement Study: current practices in Illinois utilities towards powerplant productivity. Final report, Project 1, Task 1
Efforts of this task indicate that powerplant productivity is a complex issue that has to take into account economic factors, equipment limitations, and system-loading characteristics as well as external constraints such as regulatory requirements. Among the specific findings are: (1) utilities in Illinois use the industry-wide measures of performance such as capacity factor, availability factor, forced outage rates etc.; equivalent availability as a measure is not in common practice; (2) several unit performance statistics are collected on a routine basis such as the daily unit status, component outage data, monthly production figures etc.; (3) identifying major causes of lost productivity appears to be a relatively simple task, but finding economically and technically acceptable corrective actions are generally more difficult; (4) selection of improvement projects, as well as evaluating their future impacts, is mostly based on operating experience and engineering judgement, with no use of formal analytical/statistical models; (5) there generally is a group in every utility - typically called the power production department - with routine responsibilities for upkeep of unit productivity; and (6) recently the Commonwealth Edison Co. has developed a procedure for utilizing the Edison Electric Institute outage data base for analyzing productivity-related questions at nuclear plants; this …
Date:
April 5, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[BASEMENT BOX 66.0229]
A daylight photograph showing the aftermath of a hotel fire in Oklahoma City, Oklahoma County, Oklahoma. The image shows fire department personnel using a high pressure water hose and a shovel crane to extinguish hot spots in the debris. A barricade, traffic light, and street signs are in the scene, and black and green wax pencil editorial marks are visible on the photograph. Caption: "Crane finishes off fire-ravaged hotel."
Date:
April 5, 1972
Creator:
Tapscott, George
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[BASEMENT BOX 66.0236]
A daylight photograph showing the aftermath of a fire at the Rex Hotel in Oklahoma City, Oklahoma County, Oklahoma. The image shows a shovel crane being used to prevent the fire from spreading to a neighboring structure. Caption: "Flames possibly started by transient squatters destroyed the Rex Hotel building, 330 W Sheridan, early today as firemen fought to protect an adjoining business where cleaning solvent was stored."
Date:
April 5, 1972
Creator:
Tapscott, George
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Solar central receiver prototype heliostat. Interim technical progress report
The objective of Phase I of this project is to support the Solar Central Receiver Power Plant research, development and demonstration effort by: (1) Establishment of a heliostat design, with associated manufacturing, assembly, installation and maintenance approaches, that, in quantity production will yield significant reductions in capital and operating costs over an assumed 30 year plant lifetime as compared with existing designs. (2) Identification of needs for near term and further research and development in heliostat concept, materials, manufacture, installation, maintenance, and other areas, where successful accomplishment and application would offer significant payoffs in the further reduction of the cost of electrical energy from Solar Central Receiver Power Plants. The Phase I study will define a low-cost heliostat preliminary design and the conceptual design of a heliostat manufacturing/installation plan which will result in low life cycle cost when produced and installed at high rate and large quantities for commercial Solar Central Receiver Power Plants. The study will develop the annualized life cycle cost and the performance of heliostats for a 30 year plant life, for each of three rates of continuous production and installation. The three specified rates are 25,000, 250,000, and 1,000,000 heliostats per year. The analysis of these …
Date:
April 5, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[BASEMENT BOX 66.0228]
A nighttime photograph taken at a fire in Oklahoma City, Oklahoma County, Oklahoma. The image shows two firemen in a bucket lift, using a water cannon to combat a blaze at the Rex Hotel. Caption: "Smoke and flames boil up from Rex Hotel building at 330 W Sheridan, destroyed in a pre-dawn fire today."
Date:
April 5, 1972
Creator:
Jones, Lucien
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[BASEMENT BOX 66.0235]
A nighttime photograph of a fire at the Rex Hotel in Oklahoma City, Oklahoma County, Oklahoma. The image shows two firemen as they scale an aerial ladder truck reaching the roof of the burning building. Smoke and a Hotel Black sign are visible against the night sky. Caption: "Rex Hotel Fire."
Date:
April 5, 1972
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[BASEMENT BOX 66.0234]
A nighttime photograph of a fire at the Rex Hotel in Oklahoma City, Oklahoma County, Oklahoma. The image shows firemen and civilians outside the hotel as smoke billows from the structure. Caption: "Rex Hotel fire."
Date:
April 5, 1972
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[BASEMENT BOX 66.0227]
Smoke is visible against the night sky as fire burns the Rex Hotel in Oklahoma City. The image shows the back of the hotel, and bears green and black wax pencil marks. Caption: "Rex Hotel fire."
Date:
April 5, 1972
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Crosbyton Review (Crosbyton, Tex.), Vol. 65, No. 14, Ed. 1 Thursday, April 5, 1973
Weekly newspaper from Crosbyton, Texas that includes local, state and national news along with advertising.
Date:
April 5, 1973
Creator:
Reynolds, Jim
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 71, No. 14, Ed. 1 Thursday, April 5, 1979
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
April 5, 1979
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 65, No. 14, Ed. 1 Thursday, April 5, 1973
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
April 5, 1973
Creator:
Baggarly, H. M.
Object Type:
Newspaper
System:
The Portal to Texas History
Aerial radiometric and magnetic survey: Bozeman National Topographic Map, Montana
The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Bozeman National Topographic Map NL12-8 are presented in Volume I and II of this report. The airborne data gathered are reduced by ground computer facilities to yield profile plots of the basic uranium, thorium, and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units. The distribution of data within each geologic unit, for all surveyed map lines and tie lines, has been calculated and is included. Two sets of profiled data for each line are included with one set displaying the above-cited data. The second set includes only flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station. A general description of the area, including descriptions of the various geologic units and the corresponding airborne data, is included also.
Date:
April 5, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Nuclear chemistry counting facilities: requirements definition
In an effort to upgrade outdated instrumentation and to take advantage of current and imminent technologies the Nuclear Chemistry Division at Lawrence Livermore Laboratory is about to undertake a major upgrade of their low level radiation counting and analysis facilities. It is expected that such a project will make a more coordinated data acquisition and data processing system, reduce manual data handling operations and speed up data processing throughput. Before taking on a systems design it is appropriate to establish a definition of the requirements of the facilities. This report examines why such a project is necessary in the context of the current and projected operations, needs, problems, risks and costs. The authors also address a functional specification as a prelude to a system design and the design constraints implicit in the systems implementation. Technical, operational and economic assessments establish necessary boundary conditions for this discussion. This report also establishes the environment in which the requirements definition may be considered valid. The validity of these analyses is contingent on known and projected technical, scientific and political conditions.
Date:
April 5, 1979
Creator:
O'Brien, D.W. & Baker, J.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Pete O'Brien (Rangers)]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1977, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: School]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Demonstration]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Eggs]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Credit Unions]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Truckers]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Teachers]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Housing center]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Fishing]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Oil man]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
April 5, 1979, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library