Abstract

Due to the dangerous ecological issues and the cost of the traditional energy, the use of sustainable power source increased, particularly solar energy. Solar refrigeration and air conditioner such as, absorption solar systems denote a very good option for cooling production. In present work, an absorption machine that restores the thermal energy produced by a flat plate solar collector in order to generate the cooling effect was studied. For the seek of good performances, it is necessary to master the modeling of the absorption group by establishing the first and second laws of the thermodynamic cycle in various specific points of the cycle. The main objective was to be able to finally size different components of the absorption machine and surge the coefficient of performance at available and high heat source temperature. A model were developed using a solver based on Matlab/Simulink program. The obtained results were compared to the literature and showed good performances of the adopted approach.

Highlights

  • This nowadays, air conditioning is generally provided by classic mechanical compression machines that consume a considerable amount of electrical energy in addition to the toxic fluids used inside

  • A dynamic model of a single-effect Absorption Refrigeration System (ARS) using LiBr–H2O as work fluid, to evaluated the influence of thermal masses of each component, the method is solved by the fourth-order Runge–Kutta and the results showed that the thermal load of condenser and generator are reliant on the condenser thermal mass

  • For the parametric study of the absorption system, the choice was made to work with a generator temperature of 80 to 100°C and a condenser temperature of 34, 35 & 39 °C with an evaporator temperature fixed at 5°C & 35 °C

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Summary

Introduction

This nowadays, air conditioning is generally provided by classic mechanical compression machines that consume a considerable amount of electrical energy in addition to the toxic fluids used inside. Absorption cycles are the most technologically mature and use natural refrigerants such as water This technology only requires thermal solar panels because of the low temperature required. A dynamic model of a single-effect Absorption Refrigeration System (ARS) using LiBr–H2O as work fluid , to evaluated the influence of thermal masses of each component, the method is solved by the fourth-order Runge–Kutta and the results showed that the thermal load of condenser and generator are reliant on the condenser thermal mass. The thermal and physical properties of the binary mixture are calculated in each stage of the absorption cycle in order to determine the coefficient of performance, and improve the working conditions of the system

System description
Formulation of analysis model
Results and discussion
Conclusion
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