The samples studied are pure graphite whose preparation method includes a step of pressing. Graphite is a material with properties covering a wide range of values. These properties may differ qualitatively, and depending ...

In this work some results of theoretical analysis on the selection of optimum band gap semiconductor absorber graded band gaps for application in multijunction solar cells are presented. A detailed theoretical analysis ...

Nowadays, nanostructures, characterized by their excellent mechanical, electronic, optical and thermal properties as well as the advantages from their extremely small feature size, are worldwide investigated. Particular ...

In this paper a photovoltaic (PV) module in renewable energy conversion system is simulated. The simulation of the system is developed using MATLAB/Simulink environments, which can be representative of PV cell, module, and ...

This work aims to study the effect of changing diameter intern and extern on the length and temperature of the establishment of a turbulent flow in a coaxial heat exchanger with a counter current flow. The study is based ...

Solar energy can be used for substitution of the depleting fossil fuels in thermal applications and electricity generation through thermal route. For medium and high temperature applications, a system for collecting solar ...

This paper presents the study of a tubular adsorber of solar adsorption cooling machine. The modelling and the analysis of the adsorber are the key point of such studies, because of the complex coupled heat and mass transfer ...

Transistors made of thin layers (Thin Film Transistor: TFT) are used primarily for the realization of active matrix flat panel displays liquid crystal. They constitute the basic element of a specific part of electronic ...

The integration of active solar components in the building appears as a key element that reduces energetic and environmental impact of the building sector. However, the market of solar equipments in Algeria remains to ...

Over 70% of the planetary surface is covered by water from whish 97.5% is salted water and thus is improper for human, in industrial and agriculture use. Soft water represents only, 2% of existing water. Solar desalination ...