949 resultados para parabolic trough collector


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" ... comprising an extensive collection of works on the North American Indians; a large and select collection of genealogies, an unusual accumulation of church histories, and general American history, embracing state, county and town history, inland voyages and travels, narratives, biographies, bibliography, Revolutionary history, early poetry, &c."

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Irving Kane and Allen B. Pond, architects. Plans for the Union were on a scale unknown at the time for "club houses" in American colleges and universities: 250 feet long and 200 feet wide. Construction began in 1916 and owing to war time difficulties was not ready to be used by students until 1919. Two new wings to the south were completed in 1936 and 1938. Another addition was begun 1954-55. Verso: 7623 MICHIGAN UNION BLDG., University of Mich., Ann Arbor Facing for base of drinking fountain in tap room matches facing for steam table. 7623 Water trough and shelves for glasses are made of black Hubbellite. Facing is magnesium oxycholoride. On image: 7623

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Mode of access: Internet.

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Mode of access: Internet.

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[Pt. 1] has title: Confirmation of Daniel D. Moore to be Collector of Internal Revenue : hearing before a subcommittee of the Committee on Finance ... Feb. 19, 1934.

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"Elmer Adler, Rochester, N.Y."--Written in pencil on p. [2] of cover.

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This study of concentrating solar thermal power generation sets out to evaluate the main existing collection technologies using the framework of the Analytical Hierarchy Process (AHP). It encompasses parabolic troughs, heliostat fields, linear Fresnel reflectors, parabolic dishes, compound parabolic concentrators and linear Fresnel lenses. These technologies are compared based on technical, economic and environmental criteria. Within these three categories, numerous sub-criteria are identified; similarly sub-alternatives are considered for each technology. A literature review, thermodynamic calculations and an expert workshop have been used to arrive at quantitative and qualitative assessments. The methodology is applied principally to a case study in Gujarat in north-west India, though case studies based on the Sahara Desert, Southern Spain and California are included for comparison. A sensitivity analysis is carried out for Gujarat. The study concludes that the linear Fresnel lens with a secondary compound parabolic collector, or the parabolic dish reflector, is the preferred technology for north-west India.