26 resultados para Energy methods

em University of Michigan


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Mode of access: Internet.

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The utilization of direct solar gains in buildings can be affected by operating profiles, such as schedules for internal gains, thermostat controls, and ventilation rates. Building energy analysis methods use various assumptions about these profiles. This paper describes the effects of typical internal gain assumptions in energy calculations. The results of this study indicate that calculations of annual heating and cooling loads are sensitive to internal gains, but in most cases are relatively insensitive to hourly variation in internal gains.

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"This work was supported in part by the Atomic Energy Commission and the Office of Naval Research under AEC Contract AT(11-1)-415."

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"C00-2118-0048."

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"Supported in part by the U.S. Department of Energy under contract US ENERGY/EY-76-S-02-2383."

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"AEC Contract AT930-1)-2137."

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"Contract AT-30-1-Gen-366."

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This report consists of the analytical procedures modified or developed at Pratt & Whitney Aircraft, CANEL, for the determination of alloying constituents and impurities in columbium and its alloys. Included are spectrophotometric methods for chromium, columbium, iron, molybdenum, tungsten, nickel, nitrogen and titanium; volumetric methods for chromium, vanadium and zirconium; emission and X-ray spectrographic methods for various alloying elements; a spectrographic method for zirconium and trace impurities and miscellaneous methods for aluminum, carbon, oxygen and hydrogen.