In this study, an experimental and numerical approach is used in order to evaluate the thermoelectric cooler (TEC) control performance efficiency. For purpose, refrigeration system designed by using semi-conductor material operating under Peltier effect, Arduino device. The efficiency of investigated through coefficient temperature span for carrier fluid between hot cold exchanger prototype developed recently at Medea University. addition, proportional-integral-derivative (PID) maintain heat...

Abstract The current study aimed to design and test a prototype of thermoelectric cooler (TEC) using modules (TEM) operating near room temperature. utilized in this investigation has maximum cooling power 46 W dimensions 40 mm × 3.6 mm. After series measurements, the device temperature decreased from an ambient 19.6 °C 1.6 °C, with notable coefficient performance around 0.9, achieved through utilization both serial parallel connections. secondary objective research was based on artificial...

In this work, an analytical study on the active magnetic regeneration cycle operating near room temperature using nanofluid as carrier fluid, in order to enhance heat transfer regenerator bed after magnetization and demagnetization process. For purpose, a based Al2O3 has been proposed. A numerical simulation of 1D model transient energy equations is used describe between magnetocaloric material fluid bed. The obtained results are presented, discussed compared with base fluid.DOI:...

The solar systems technology offers a promising method for the large scale use of energy in southern zone Algeria. magnitude radiation is most important parameter sizing these systems. chief goal this investigation to contribute national efforts establishing Using Algerian atlas model and experimental monthly mean Linke turbidity factor new prediction Sahara desert area Adrar region, Algeria developed. In study, was obtained from radiometric meteorological data recorded research unit...

Refrigeration plays a significant role across various aspects of human life and consumes substantial amounts electrical energy.The rapid advancement green cooling technology presents numerous solar-powered refrigeration systems as viable alternatives to traditional equipment.Exergy analysis is key in identifying actual thermodynamic losses improving the environmental economic efficiency systems.In this study exergy analyze has been conducted for vapor compression (SP-VCR) system region...

This paper is dedicated to study the experimental validation of a numerical model based on La-Fe-Co-Si layered operating near room temperature. For purpose this paper, simulation transient energy equations proposed for modeling heat exchange between multilayer material and carrier fluid in regenerator bed with an applied magnetic field 1.5 T. The main findings show comparison setup including magnetocaloric effect La-Fe-Co-Si, pressure drop, exergy exergetic efficiency.

This study presents a thermodynamic analysis of solar-driven vapor compression refrigera-tion (VCR) system designed for use in the region Ghardaïa (Southern Algeria) which is lo-cated desert with semi-arid climate where demand cooling high, and solar radiation abundant. Two working fluids are tested compared, HFC high GWP going to phased out, R134a low GWP, HFO refrigerant recently introduced R1234ze. The performance VCR was evaluated using numerical model developed MATLAB software, based on...

Thermoelectric generators (TEGs) face challenges in efficiently converting waste heat into electrical energy. To enhance their performance, converters are employed, with the crucial feature being implementation of maximum power point tracking (MPPT) algorithm. However, efficiency MPPT software (MPP) is influenced by load connected to converter's output, necessitating determination an appropriate range. The primary objective this study identify acceptable range for isolated DC-DC boost...

The present work deal to study the impact of green buildings on air conditioning type HVAC system. For this purpose, thermal balance based Algerian norm has been used predict efficiency installation governing equations are described in detail order show buildings. obtain results including comparison between coefficient construction and without with using plants.

This numerical study scrutinizes the impact of both thickness layers and an externally applied magnetic field on optical absorption coefficient alterations in refractive index pertaining to intersubband transition (1-2) within asymmetric double parabolic structure, utilizing GaAs/AlGaAs quantum wells as a basis.Energy levels their corresponding wave functions have been ascertained through use shooting method.The findings this investigation suggest pronounced sensitivity changes external...

Piezoelectric sensors and actuators have gained significant attention in recent years due to their unique ability convert electrical energy into mechanical vice versa. This paper provides a comprehensive review of the principles, applications, advancements field piezoelectric actuators. It discusses underlying working materials used, fabrication techniques, various applications different industries. Additionally, it highlights challenges future prospects for further development this rapidly...

In the present work, structural, electronic and vibrational characteristics of zwitterionic DL-histidine have been investigated using DFT calculations IR spectroscopy. The molecular structure has optimized in aqueous solution solid phase. A good agreement between experimental structural parameters (bond lengths angles) obtained by X-Ray diffraction calculated ones phase is achieved. Some interesting properties like HOMO LUMO energies HOMO-LUMO energy gap predicted liquid water as solvent....

The present work deal to study, a numerical modeling on the magnetic refrigeration machine operating near room temperature using nanofluid as carrier fluid, in order enhance heat exchange regenerator bed after magnetization and demagnetization process. For this purpose, based TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> has been proposed. A simulation of 1D model transient energy equations is used describe between magnetocaloric...

The problem of water drinking supply is very important in the world, especially for developing countries, particular Algeria. In this work we propose to study a distillation system based on solar energy process using an artificial intelligence approach order enhance performance and daily production. For purpose, conventional still capillary film was used. operating parameters two distilleries are analyzed neural network used predict through amount distillate, radiation ambient temperature....

The aim of this paper is to propose a composite material based on compounds LaFeCoSi operated in temperature range 275-315K. was designed according the optimum fractions, which were determined numerically. A force approximately 100 kN applied assemblies elements obtain homogeneous disk. direct measurement adiabatic change under magnetic field 2T has been carried out by test bench built at Heig-VD. comparison results between numerical prediction and experimental magnetocaloric effect...