Theoretical study of an NH3–H2O absorption chiller powered by a linear Fresnel system modelled by combining ray tracing and CFD

Fatimata Dione; Ababacar Thiam; ElHadji I. Cisse; Djicknoum Diouf; Amadou Seidou Maiga

Results in Engineering (Dec 2023)

Theoretical study of an NH3–H2O absorption chiller powered by a linear Fresnel system modelled by combining ray tracing and CFD

Fatimata Dione,
Ababacar Thiam,
ElHadji I. Cisse,
Djicknoum Diouf,
Amadou Seidou Maiga

Affiliations

Fatimata Dione: Environment, Engineering, Telecommunications and Renewable Energy Laboratory (LEITER), UFR of Applied Sciences and Technology, Gaston Berger University (UGB), BP 234, Saint-Louis, Senegal; Corresponding author.
Ababacar Thiam: Laboratory of Water, Energy, Environment and Industrial Processes, Polytechnic School, Cheikh Anta Diop University, Dakar, Senegal
ElHadji I. Cisse: Laboratory of Water, Energy, Environment and Industrial Processes, Polytechnic School, Cheikh Anta Diop University, Dakar, Senegal
Djicknoum Diouf: Environment, Engineering, Telecommunications and Renewable Energy Laboratory (LEITER), UFR of Applied Sciences and Technology, Gaston Berger University (UGB), BP 234, Saint-Louis, Senegal
Amadou Seidou Maiga: Environment, Engineering, Telecommunications and Renewable Energy Laboratory (LEITER), UFR of Applied Sciences and Technology, Gaston Berger University (UGB), BP 234, Saint-Louis, Senegal

Journal volume & issue: Vol. 20
p. 101410

Abstract

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This paper analyses the performance of a NH3–H2O absorption machine powered with a linear Fresnel reflector. , The various components of the absorption machine and the linear Fresnel reflector were dimensioned for a power of 10 kW. A numerical model combining Monte Carlo ray tracing and Computational Fluid Dynamics was developed to evaluate the outlet temperature of the linear Fresnel reflector. The outlet temperature is used as input data for the simulation of the thermodynamic model of the NH3–H2O absorption machine using the commercial software Engineering Equation Solver. The results showed that the linear Fresnel reflector consists of 30 reflectors with a length of 10 m and a wide of 0.2 m each, 5 absorber tubes with a height of 4 m each and 1 trapezoidal cavity with a length of 10 m and a height of 4.065 m. A hot source temperature of 169.24 °C was recorded when the coefficient of performance reaches 0.510.

Published in Results in Engineering

ISSN: 2590-1230 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology
Website: https://www.journals.elsevier.com/results-in-engineering

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