Results 211 to 220 of about 6,919 (267)

Reflections on Solar Variability

Solar Physics, 1981
The Sun is a variable star in many respects: there are secular varitions related to the general solar evolution, and — as discovered in recent years — there are many short period variations of which the 5 min and 160 min pulsations are the most important ones.
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Reflecting bottom solar pond

Energy Conversion and Management, 1984
Abstract This communication presents an investigation of a three zone solar pond with a diffusely reflecting bottom. The dynamic performance and its optimization as a large scale solar energy collection and long term storage system have been discussed. Numerical computations, corresponding to the data of solar radiation and ambient air temperature of
Y. Katti, P.K. Bansal
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Reference Solar Cell Reflections in Solar Simulators

2011
26th European Photovoltaic Solar Energy Conference and Exhibition; 2613 ...
Romang, D., Meier, J., Adelhelm, R., Kroll, U.   +3 more
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Solar Reflectance of Glazed Tiles

Advances in Science and Technology, 2014
Exterior wall tiles with high solar reflectance are effective in mitigating heat-island phenomenon. Such walls have also the potential to decrease the warming up of building interiors in mid-summer. For the purpose of increasing the solar reflectance of wall tiles, several kinds of glazes were prepared to measure their visible and infra-red spectral ...
Toyohiko Sugiyama, Hiroshi Kakiuchida, Keiji Kusumoto, Masayoshi Ohashi   +3 more
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Solar reflectance integrating sphere

Solar Energy, 1960
Abstract An inexpensive integrating sphere for the direct determination of the reflectance of materials irradiated by solar energy transmitted through the atmosphere of the earth is described. Reflectance and transmittance measurements of various metals, cloths, and filters are reported and are compared to spectral and total measurements made with ...
R.V. Dunkle, D.K. Edwards, J.T. Gier, J.T. Bevans   +3 more
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UV solar reflecting coronagraph

AIP Conference Proceedings, 1990
A dual‐channel reflecting coronagraph is proposed that would provide observations of Lα corona and chromosphere, upper transition‐region phenomena in CIV, and also helioseismology observations in the continuum around 166 nm. Each channel would use a 104×104‐UV‐sensitive CCD array.
R. N. Smartt, S. Koutchmy, J. C. Vial
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Reflections on the topic of solar fuels

Energy Environ. Sci., 2014
The amount of energy and chemicals extracted to date from sunlight by the solar fuels community is minute in comparison with the corresponding amounts being regularly extracted from non-renewable sources. This brief appraisal discusses why.
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Wave reflections in the solar atmosphere

Solar Physics, 1979
The small phase-lag between velocities observed at different chromospheric levels is interpreted as being due to acoustic waves reflected by the very hot atmospheric layers of the chromosphere-corona transition zone. We consider first an isothermal slab, then a realistic solar atmospheric model and calculate weighting functions for velocities in Ca ii ...
Janine Provost, Nicole Mein
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Infrared Reflecting Solar Cells

IEEE Transactions on Aerospace, 1965
The equilibrium temperature of a solar cell panel in space is a function of the ratio of solar absorptance to infrared emittance of the surface. This paper describes a method for reducing solar absorptance by constructing the solar cell so that it will be a reflector in the infrared part of the solar spectrum.
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Solar concentrators using total internal reflection

Applied Optics, 1983
A study is presented of solar concentrators based on total internal reflections. The concentrators are placed over photovoltaic cells. Experimental data obtained with different encapsulating materials and dependence on geometrical and physical variables are given.
G, Lifante, F, Cusso, F, Meseguer, F, Jaque   +3 more
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