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Against the background of an increasing energy demand and growing environmental problems in Morocco due to the strong foreign dependence (Import over 95% of the country's energy needs), renewable energy resources offer interesting opportunities for Morocco. This paper suggests the simulation and perform the analysis of CSP using a Parabolic Trough Collector PTC as a technology. Therefore, the code...
The main objective of this work is to study numerically the thermal behavior of solar collectors. In particularly, we performed a detailed design and parametric study of the circulation pipe of an evacuated tube collector. Indeed, we altered the geometry of the anodes by adopting three configurations: circular, rectangular and triangular. In each configuration, we changed the inlet position of cold...
This paper presents a physical model of the thermal behavior of a phase change material wallboard subject to periodic heating and cooling cycles. The physical model is validated by comparing our results with previously published results. The effect of the thermophysical properties of the PCM on the thermal behavior of the PCM building construction is also discussed.
Latent energy storage is required to ensure the continuity of a thermal process in energy systems where a temporal difference exists between the supply of energy and its utilization. Good understanding of heat transfer during melting process is crucial for predicting the storage system performance with accuracy and avoiding costly system overdesign. Natural convection heat transfer during melting...
In this present work a steady-state natural convection was numerically simulated in an inclined rectangular cavity with a sinusoidal bottom wavy wall. The vertical walls are insulated while the bottom surface maintained to higher temperature than the top surface. In this numerical simulation, Rayleigh number (103, 106 and 6×106) and inclination angle (30°, 60° and 90°) were chosen in order to analyze...
In addition to their harmful impact on the environment, air-conditioning applications account for a significant percentage of total energy utilization; thinking about clean resources becomes a world priority. Solar cooling systems using either adsorption or absorption technologies show a great potential since they can use a permanent energy and operate with environmentally safe working pairs. This...
A numerical study is conducted to analyze the melting process around a circular cylinder with three rectangular fins. A numerical code is developed using an unstructured finite-volume method and an enthalpy porosity technique to solve for natural convection coupled to solid-liquid phase change. Results are reported for gallium as the phase change material. Orientations of fins with respect to the...
The current numerical study is conducted to analyze the melting process around a multiple horizontal circular cylinders in the presence of the natural convection in the melt phase. A numerical code is developed using an unstructured finite-volume method and an enthalpy porosity technique to solve for natural convection coupled to solid-liquid phase change. It is found that the effect of natural convection...
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