Results 261 to 270 of about 39,260 (307)

Enhanced operational efficacy of direct absorption solar collectors using multi-walled carbon nanotubes/MoS₂ nanofluids. [PDF]

Sci Rep
Talebi K, Shamel A, Alayi R, Ebrahimzadeh-Rajaei G, Khodadadi-Moghaddam M.   +4 more
europepmc   +1 more source

Digital twin analysis of graphene-silicon solar Schottky-heterojunction cell efficiency for terrestrial photovoltaics. [PDF]

Sci Rep
Kanti PK, Kumar HGP, Elsaeedy HI, Wanatasanappan VV, Syum GG, Ben Hamida MB.   +5 more
europepmc   +1 more source

Experimental evaluation of Al₂O₃-water nanofluid for efficiency enhancement in a photovoltaic-thermal system under Western Indian climate. [PDF]

Sci Rep
Satpute J, Petrů J, Hiwase V, Thorat P, Sundge R, Channapattana S, Bashir MN, Lee JS, Yadav S, Campli S.   +9 more
europepmc   +1 more source

Advances in Coffee Drying: A Comprehensive Review of Traditional, Solar, Mechanical, Hybrid, and Emerging Methods. [PDF]

Foods
Duque-Dussán E, Figueroa-Varela PA, Cruz-Ospina V, Banout J.   +3 more
europepmc   +1 more source

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Model of Solar Radiation Pressure and Thermal Re-radiation

Springer Theses, 2018
The non-gravitational force solar radiation pressure is the main source of error in the precise orbit determination of GNSS satellites. All deficiencies in the modeling of solar radiation pressure map into estimated terrestrial reference frame parameters as well as into derived gravity field coefficients and altimetry results when LEO orbits are ...
Dražen Svehla, Svehla Dražen
exaly   +2 more sources

Orbital dynamics of high area-to-mass ratio spacecraft with J2 and solar radiation pressure for novel Earth observation and communication services [PDF]

Acta Astronautica, 2012
This paper investigates the effect of planetary oblateness and solar radiation pressure on the orbits of high area-to-mass spacecraft. A planar Hamiltonian model shows the existence of equilibrium orbits with the orbit apogee pointing towards or away ...
Camilla Colombo, Colin R Mcinnes
exaly   +2 more sources

Enhanced solar radiation pressure modeling for Galileo satellites

Journal of Geodesy, 2014
This paper introduces a new approach for modeling solar radiation pressure (SRP) effects on Global Navigation Satellite Systems (GNSSs). It focuses on the Galileo In-Orbit Validation (IOV) satellites, for which obvious SRP modeling deficits can be identified in presently available precise orbit products.
Montenbruck, Oliver, Steigenberger, Peter, Hugentobler, Urs   +2 more
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Effects of Solar Radiation Pressure on Earth Satellite Orbits

Science, 1960
Calculations show that, at a mean altitude of 1000 miles, radiation pressure can displace the orbit of the 100-foot Echo balloon at rates up to 3.7 miles per day, the orbit of the 12-foot Beacon satellite at 0.7 mile per day. For certain resonant conditions this effect accumulates, drastically affecting the satellite's lifetime.
R W, Parkinson, H M, Jones, I I, Shapiro
openaire   +2 more sources

Variation of sodium on mercury with solar radiation pressure

Icarus, 1987
It has been suggested that nonthermal Na atoms with velocities in excess of 2.1 km/sec in the Mercury atmosphere can be accelerated off the planet by solar radiation pressure; Na abundance may accordingly be expected to decrease with increasing radiation pressure.
A.E. Potter, T.H. Morgan
openaire   +1 more source

A new solar radiation pressure model for GPS

Advances in Space Research, 1999
Abstract The largest error source in GPS orbits is due to the effects of the solar radiation pressure. Over the last few years many improvements were made in modeling the orbits of GPS satellites within the IGS. However, most improvements were achieved by increasing the number of estimated orbit and/or solar radiation pressure parameters.
T.A. Springer, G. Beutler, M. Rothacher
openaire   +1 more source