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  • Collection: Short Communication

In this paper, we investigate the form of the solutions of two systems of rational difference equations of second order, where the initial conditions are arbitrary nonzero real numbers.

South Africa’s national power grid is currently in dire straits. The lack of a dependable power supplier and rising electricity costs force the public and businesses to look for alternatives to meet their energy needs. These alternatives are costly…

We propose in this paper, a numerical study of a planar impacting jet flow. The flow is assumed isothermal, laminar and unconfined. The developed computer code is based on the finite volume method, which was used to discretize the N-S equations. The…

In this work, we investigate the influence of temperature on the series and shunt resistances of polycrystalline silicon solar cells and then to determine the specific expressions of both parasitic resistances as function of temperature. We have…

In this paper, we develop a mathematical model, which calculate the temperature and thermal contact resistance distributions in a multilayer media. This work is composed of two parts. The first part concerns the analytical solution of the conduction…

In order to study the transient thermal behaviour of a shell-and-tube latent thermal energy storage (LTES) unit using phase change material (PCM) under variable heat transfer fluid (HTF) inlet velocities, a mathematical model based on the enthalpy…

The aim of this work is to study the relationship between air movement preference and thermal comfort in 30 naturally ventilates classrooms in 6 schools in the central region of Cameroon. This study was conducted during 2 seasons (the dry and the…

This paper is concerned with the thermal comfort of a double-walls seven stories bioclimatic building built with local construction materials. First of all, we use a numerical code to investigate the construction materials thermal inertia effects on…

Sorption isotherms of Artemisia herba-alba were determined at three temperatures (30, 40 and 50 °C) and in the range of water activity varying from 0.0572 to 0.898. The hysteresis effect was distinctly observed in the range of temperature tested.…

Hydrogen can be produced from water electrolysis which can operate at atmospheric pressure or high pressure. Today’s industry including vehicle one, devotes efforts to produce high pressure hydrogen by using pressurized electrolyser. The purpose of…
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