This system will be undergoing maintenance Monday, January 23 from 8:00 AM to 12:00 PM CST.

  You limited your search to:

  Partner: UNT Libraries Government Documents Department
 Resource Type: Poster
Parabolic Trough Receiver Heat Loss Testing (Poster)

Parabolic Trough Receiver Heat Loss Testing (Poster)

Date: March 1, 2007
Creator: Price, H.; Netter, J.; Bingham, C.; Kutscher, C.; Burkholder, F. & Brandemuehl, M.
Description: Parabolic trough receivers, or heat collection elements (HCEs), absorb sunlight focused by the mirrors and transfer that thermal energy to a fluid flowing within them. Thje absorbing tube of these receivers typically operates around 400 C (752 F). HCE manufacturers prevent thermal loss from the absorbing tube to the environment by using sputtered selective Cermet coatings on the absorber and by surrounding the absorber with a glass-enclosed evacuated annulus. This work quantifies the heat loss of the Solel UVAC2 and Schott PTR70 HCEs. At 400 C, the HCEs perform similarly, losing about 400 W/m of HCE length. To put this in perspective, the incident beam radiation on a 5 m mirror aperture is about 4500 W/m, with about 75% of that energy ({approx} 3400 W/m) reaching the absorber surface. Of the 3400 W/m on the absorber, about 3000 W/m is absorbed into the working fluid while 400 W/m is lost to the environment.
Contributing Partner: UNT Libraries Government Documents Department
Recycling and the Consumer

Recycling and the Consumer

Date: 1979
Creator: unknown
Description: This document contains consumer information regarding recycling in the United States.
Contributing Partner: UNT Libraries Government Documents Department
Durability of Polymeric Encapsulation Materials for Concentrating Photovoltaic Systems [Poster]

Durability of Polymeric Encapsulation Materials for Concentrating Photovoltaic Systems [Poster]

Date: February 1, 2011
Creator: Miller, D. C.; Kempe, M. D.; Araki, K.; Kennedy, C. E. & Kurtz, S. R.
Description: Polymeric encapsulation materials are typically used in concentrating photovoltaic (CPV) modules to protect the cell from the field environment. Because it is physically located adjacent to the cell, the encapsulation is exposed to a high optical flux, often including light in the ultraviolet (UV) and infrared (IR) wavelengths. The durability of encapsulants used in CPV modules is critical to the technology, but is presently not well understood. This work seeks to identify the appropriate material types, field-induced failure mechanisms, and factors of influence (if possible) of polymeric encapsulation. These results will ultimately be weighed against those of future qualification and accelerated life test procedures.
Contributing Partner: UNT Libraries Government Documents Department
The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units

The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units

Date: 1968
Creator: United States. National Bureau of Standards.
Description: Chart of the six base units of the modernized metric system, including length, time, mass, temperature, electric current, and luminous intensity.
Contributing Partner: UNT Libraries Government Documents Department
The Modernized Metric System: the International System of Units-SI

The Modernized Metric System: the International System of Units-SI

Date: August 1981
Creator: United States. National Bureau of Standards.
Description: Revised wall chart of the seven base units of the modernized metric system, including length, mass, time, electric current, temperature, amount of substance, luminous intensity, and plane angle.
Contributing Partner: UNT Libraries Government Documents Department
Binary Phase Diagrams of Transition Elements

Binary Phase Diagrams of Transition Elements

Date: May 1980
Creator: Waterstrat, Richard M.
Description: Chart issued by the U.S. National Bureau of Standards illustrating the systematic relationships between phase diagrams of transition elements. This chart includes color illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Remember! the flag  of liberty, support it!  : buy U.S. government bonds, 3rd. Liberty Loan.

Remember! the flag of liberty, support it! : buy U.S. government bonds, 3rd. Liberty Loan.

Date: 1918
Creator: United States. Dept. of the Treasury. Publicity Bureau.
Description: A group of people stand in front of the American flag. A ship is in the background.
Contributing Partner: UNT Libraries Government Documents Department
Naval aviation has a place for you-- : pilots, machinist's mates, radiomen, metalsmiths, ordnancemen : learn the right-way--the Navy-way, apply today.

Naval aviation has a place for you-- : pilots, machinist's mates, radiomen, metalsmiths, ordnancemen : learn the right-way--the Navy-way, apply today.

Date: unknown
Creator: Barclay, McClelland.
Description: Sailor performs maintenance on a wheel assembly. Behind him are ships and planes.
Contributing Partner: UNT Libraries Government Documents Department
Red Army encircling Balkans.

Red Army encircling Balkans.

Date: 1944
Creator: O'Donohoe, J.
Description: Black & white newsmap showing the planned paths of the Soviet armed forces through eastern Europe toward Berlin, Germany.
Contributing Partner: UNT Libraries Government Documents Department
Saja orang Marine, toeroetlah saja! : Koninklijke Marine.

Saja orang Marine, toeroetlah saja! : Koninklijke Marine.

Date: unknown
Creator: unknown
Description: A young dark-haired man in a sailor's uniform smiles at the viewer. On the band of his hat are the words "Koninklijke Marine" (Royal Netherlands Navy). In the background is a ship with spotlights shining.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : You can stop the--black market : don't buy or sell on it!

Newsmap : You can stop the--black market : don't buy or sell on it!

Date: 1946
Creator: [United States.] Army Information Branch
Description: Hand with pointing index finger emphasizes the message that "you" are instrumental in controlling the illegal buying and selling of goods.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : Army Areas

Newsmap : Army Areas

Date: June 11, 1946
Creator: [United States.] Army Information Branch
Description: Front: Map shows 6 army areas in the U.S as of 11 June 1946. "A troop information program map: 11 June 1946." Back: Graphic chart of the organization of the war department.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : The Mediterranean area : a troop information program map

Newsmap : The Mediterranean area : a troop information program map

Date: 1946
Creator: [United States.] Army Information Branch
Description: Large map of the Mediterranean area with insets of South Tyrol, Dodecanese Islands, and Venezia Giulia. "Shaded areas indicate disputed territories." Separate, supplemental memorandum gives correction to the boundary line between Greece and Turkey.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : Facing Starvation! : Army food conservation program

Newsmap : Facing Starvation! : Army food conservation program

Date: 1946
Creator: [United States.] Army Information Branch
Description: 6 photographs with text: Here's how you can help; eat less bread; take only what you eat; substitute for scarce foods; use less sugar; plant a garden.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap. For the Armed Forces. V-E Day + 6 weeks, 183rd week of U.S. participation in the war

Newsmap. For the Armed Forces. V-E Day + 6 weeks, 183rd week of U.S. participation in the war

Date: June 18, 1945
Creator: [United States.] Army Service Forces. Army Information Branch
Description: Front: Text describes Pacific action. Map: Pacific action. Inset maps: Yanks push north on Luzon; Allied troops in New Borneo landings; Japs fall back toward Fr. Indo-China border. Back: Save : don't help delay V-Day! Illustration of fist raised in V for Victory sign with text admonishing no waste of materials.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap. For the Armed Forces. V-E Day + 5 weeks, 182nd week of U.S. participation in the war

Newsmap. For the Armed Forces. V-E Day + 5 weeks, 182nd week of U.S. participation in the war

Date: June 11, 1945
Creator: [United States.] Army Service Forces. Army Information Branch
Description: Front: Text describes action in portions of China, Japan, Okinawa and the Philippines. Keyed to map. Map shows Allied and Japanese held areas as of 5 June 1945 in portions of China, French Indo-China, Korea, Thailand, Japan, and the Phillippine Islands. Back: Ribbons representing decorations and awards : wear them correctly! Decorations and awards, and service ribbons are illustrated with detailed instructions and diagrams describing how to wear them correctly.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap. For the Armed Forces. V-E Day + 4 weeks, 181st week of U.S. participation in the war

Newsmap. For the Armed Forces. V-E Day + 4 weeks, 181st week of U.S. participation in the war

Date: June 4, 1945
Creator: [United States.] Army Service Forces. Army Information Branch
Description: Front: Text describes action on Okinawa, in Foochow, Tokyo, Mindanao. Maps: Pacific action flares; Okinawa; Foochow; Tokyo; Mindanao. Relief shown by spot heights and hill shading. Back: Paper bullets. Text describes propaganda leaflets as part of psychological warfare. Illustrations and text detail German and Jap Safe-Conduct Surrender Pass instructions.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap. For the Armed Forces. V-E Day + 3 weeks, 180th week of U.S. participation in the war

Newsmap. For the Armed Forces. V-E Day + 3 weeks, 180th week of U.S. participation in the war

Date: May 28, 1945
Creator: [United States.] Army Service Forces. Army Information Branch
Description: Front: Text describes fighting on Okinawa. Maps: Okinawa; Nagoya ablaze; [Japan-East China Sea]. Back: Text and 10 photographs show reconnaissance aircraft and activities.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : The Middle East

Newsmap : The Middle East

Date: 1946
Creator: [United States.] Army Information Branch
Description: Maps shows Middle East. "A troop information program map." Relief shown by hachures. Table lists countries, capitals, area in sq. miles, and population. Map key indicates oil fields, oil pipe lines, principal railways, principal roads.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : Wherever you are..

Newsmap : Wherever you are..

Date: 1946
Creator: [United States.] Army Information Branch
Description: Large globe connected by lines to four smaller globes, a manual and a soldier instruct enlisted men and women on how to enroll in grade school, high school or college level courses through the USAFI.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : Farm loans

Newsmap : Farm loans

Date: 1946
Creator: [United States.] Army Information Branch
Description: Text describes how the amended GI Bill supports farm loans. Includes 6 photographs.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap. For the Armed Forces. 297th week of the war, 179th week of U.S. participation

Newsmap. For the Armed Forces. 297th week of the war, 179th week of U.S. participation

Date: May 21, 1945
Creator: [United States.] Army Service Forces. Army Information Branch
Description: Front: Text keyed to map of Asia describes military action in Japan, Okinawa, China, The Philippines, and Borneo. Inset: View of the world from the north pole. Back: Two Down . . . One to go! Illustration of two soldiers in hand-to-hand combat is accompanied by text regarding the war with Japan.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap : Job security

Newsmap : Job security

Date: 1946
Creator: [United States.] Army Information Branch
Description: Text describes how the amended GI Bill of Rights helps veterans. Includes 2 photographs.
Contributing Partner: UNT Libraries Government Documents Department
Newsmap for the Armed Forces : going to school under the amended GI Bill of Rights

Newsmap for the Armed Forces : going to school under the amended GI Bill of Rights

Date: March 18, 1946
Creator: [United States.] Army Information Branch
Description: Front: Text describes: Education and job training for you -- Who is eligible? -- What kind of training can you get? -- How much training can you get? -- Who pays for your education? -- How do you apply for these benefits? Includes 3 photographs. Back: Memorandum to all officers and EM from Harry Truman, The White House, Washington, August 20, 1945.
Contributing Partner: UNT Libraries Government Documents Department
FIRST PREV 1 2 3 4 5 NEXT LAST