Modeling and Analysis of Energy/Exergy for Absorber Pipes of Linear Parabolic Concentrating Systems

Abstract

In this paper, the physical parameters of the absorber pipe of a linear parabolic collector have been investigated. The types of solar collectors, specifically the linear parabolic collector, have been comprehensively studied. Then, the mathematical model of heat transfer in the absorber pipe of the collector has been presented based on valid references. Numerical solutions of the equations related to the absorber pipe were performed by MATLAB software, and the effects of the physical parameters of the absorber pipe on its efficiency were investigated. The results show that increasing the length of the absorber pipe causes a nonlinear decrease in the efficiency of the absorber pipe. One of the important results is the increase in fluid temperature due to the increase in the diameter of the adsorbent tube, which increases the diameter of the fluid temperature by 60 K, in which the parameter increases the efficiency by 0.38%.

Multivariate inverse artificial neural network to analyze and improve the mass transfer of ammonia in a Plate Heat Exchanger-Type Absorber with NH3/H2O for solar cooling applications

“…The correct selection of the absorber configuration and the heat exchanger is crucial for making competitive absorption solar cooling systems against those based on vapor compression (Alayi et al, 2021b; Dhindsa, 2021). In this context, several studies have shown that the plate heat exchangers (PHEs) used as the absorber element in bubble absorption mode improve the heat transfer, the contact of the refrigerant with the solution, and allow modular designs (Castro et al, 2009; Chan et al, 2018; Lee et al, 2002; Lima et al, 2021; Tae Kang et al, 2002).…”

“…In the case of thermal systems based on renewable energies, this computational tool has been successfully implemented for the modeling and optimization of conventional geothermal processes and with the organic Rankine cycle, with relatively high precision (Haghighi et al, 2021). They have also been used to improve the thermal performance of various components such as heat exchangers(Alayi et al, 2021a), absorber tubes (Alayi et al, 2021b), and energy storage systems (Alhuyi Nazari et al, 2021a) in solar thermal installations for process heat and desalination (Alhuyi Nazari et al, 2021b). On the other hand, ANN has also proven to be a helpful alternative for modeling the physical properties of thermo-fluids to improve the energy conversion processes in various thermal systems; being relevant for those cases where they are used for thermal solar systems (Rashidi et al, 2021).…”