This work accounts for an investigation about the diurnal variation of total spectral transmittance of solar irradiance under dominant wind conditions as case studies. Such a work is carried out in Athens for the first time. The spectral transmittance values estimated were derived using Ž . ground-based spectral measurements of beam irradiance in the range 310–575 nm UV and VIS . The data were ...

Efficiency of ultrathin flexible solar photovoltaic silicon microcell arrays can be significantly improved using nonimaging solar concentrators. A fluorophore is introduced to match the solar spectrum and the low-reflectivity wavelength range of Si, reduce the escape losses, and allow the nontracking operation. In this paper we optimize our solar concentrators using a luminescent/nonluminescent...

Solar Home System is one of the technologies for utilizing solar power at home. To optimize performance PLTS, it necessary to regulate use electrical energy. In this research, an effort made control load using fuzzy logic consumption used by so that energy can be utilized effectively. The method works based on input given desired results as expected. test effectiveness method, study was tested ...

Planetary Science is the branch of knowledge benefiting most as a result of the space age. In less than half a century, the field has been revolutionized by the influx of new images, observations, and other forms of data. Most planets and their larger satellites have been transformed from telescopic objects to individual worlds. Each has revealed a distinctive geological pedigree. New twists on...

As a weakly magnetized planet, Mars ionosphere/atmosphere interacts directly with the shocked solar wind plasma flow. Even though many numerical studies have been successful in reproducing numerous features of the interaction process, these earlier studies focused mainly on interaction under steady solar wind conditions. Recent observations suggest that plasma escape fluxes are significantly en...

A new triangular shape solar distillation system is fabricated using locally available materials by integrating with PV panel connected to DC water heater. It designed for the first time distill saline or seawater heat energy directly (to sample water) and indirectly (through heater water). The trough made of Plexiglass painted in black color which placed inside frame UPVC pipe. performance sti...

Precise knowledge ofthe amount of global solar radiation plays an important role in designing solar energy systems. In this study, by using 22-year meteorologicaldata, 19 empirical models were tested for prediction of the monthly mean daily global solar radiation in Tabriz. In addition, various Artificial Neural Network (ANN) models were designed for comparison with empirical models. For this p...

in recent years, using new methods in utilization of energy resources has become necessary due to environmental pollution and restriction of energy resources. the hybrid system presented in this article produced power with sofc and stirling engine. the purpose is to analyze a 50 kw solid oxide fuel cell that could produce enough thermal energy for a 10 kw stirling engine working in the hybrid s...