932 resultados para Heat pump, Solar Energy, Ambient Energy, Evaporator Collector, Collector Efficiency


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"Work Performed Under Contract No. EG-77-C-01-4042."

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"Work Performed Under Contract No. AC02-77CH00178."

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"Work Performed Under Contract No. EG-77-C-01-4042."

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"Work Performed Under Contract No. EG-77-C-01-4042."

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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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"October 1980."

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"December 1980."

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Mode of access: Internet.

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"U.S. Department of Energy, Programs in Renewable Energy"--Cover.

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"Part of the National Science Foundation new laboratory equipment development project; NSF grant 17701."

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Item 231-B-1

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"Literature cited": p. 95-103.

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Artificial photosynthesis represents one of the great scientific challenges of the 21st century, offering the possibility of clean energy through water photolysis and renewable chemicals through CO2 utilisation as a sustainable feedstock. Catalysis will undoubtedly play a key role in delivering technologies able to meet these goals, mediating solar energy via excited generate charge carriers to selectively activate molecular bonds under ambient conditions. This review describes recent synthetic approaches adopted to engineer nanostructured photocatalytic materials for efficient light harnessing, charge separation and the photoreduction of CO2 to higher hydrocarbons such as methane, methanol and even olefins.