Analysis of Absorption Heat Pump Coupled at Agro-Alimentary Dryer Operating by Solar Way


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Abstract


The drying of agro alimentary products is an operation where the consumption of energy is particularly significant. In order to reduce the cost of the energy invoice of the process, the analysis of the various processes and various sources must imply the calculation of its energy profitability and the study of its environmental impact.  Strongly sunny, Algeria must to recourse to solar energy.  Consequently,  we propose a complex installation, made up of an absorption heat pump coupled to an agro alimentary dryer. The regeneration of solvent is ensured by energy solar way. The modeling and the simulation of the installation functioning (SAHPD) were approached, using the concept of balances of mass and of heat, applied to the various elements. The selection and the acquisition of the thermodynamic properties of the mixture water-triethylene glycol basing on the equilibria liquid-vapor of various solvents is carried out. The results of simulation highlighted the energy interest of the installation working in steady state taking into account the values of COP obtained. Indeed, for ambient temperatures Ta ∊ [15-35°C] and sunning intensities, Ig∊[600, 900 W/m2], the COP values are about 1.75 let forecast an energy profit of 40% with an efficiency of the solar collector bordering 45%. The influence of various operating variables Tg , TCS  , G, MS  and Ig  on the performance of the installation was amply studied
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Keywords


Absorption Heat Pump; Coefficient of Performance; Efficiency of the Solar Collector; Modeling; Simulation; Solar Collector

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