The effects of using two compound twisted tapes to enhance the performance of a parabolic trough solar collector

Subject Areas : Heat Transfer

mojtaba  jamiati ¹ (Assistant professor Department of Mechanical Engineering, Naragh Branch, Islamic Azad University, Naragh, Iran)
Hossein  Pourmohamadian ² (گروه مهندسی مکانیک، واحد نراق، دانشگاه آزاد اسلامی، نراق، ایران)

Received: 2020-10-16 Accepted : 2021-02-13 Published : 2021-02-13

Keywords: Hybrid nanofluid, Linear Parabolic Solar Collector, Spinning Band, Simple C Algorithm, Criteria Thermal Hydraulic Performance (PEC),

Abstract :

In this study, the effect of spinning tape on the thermal hydraulic performance of water-hybrid water-hybrid carbon nanotubes-aluminum oxide inside a linear parabolic solar collector has been investigated numerically. The study is in turbulent flow regime and in order to model it, the k epsilon turbulence model has been used. In order to solve the survival equations, the finite volume method and the SIMPLE C algorithm have been used. The study was performed to investigate the hydraulic and thermal performance of the parabolic solar collector equipped with 1, 2 and 3 twisted strips. Also, the results obtained from the simulation of a linear parabolic solar collector with a radiant strip are compared with when the solar collector is simple (without a radiant strip). Different concentrations of nanoparticles (1 to 3% by volume) were used for Reynolds numbers from 3000 to 18000. The obtained results are presented in the form of Nusselt dimensionless number diagrams, pressure drop and thermal hydraulic performance evaluation criteria(PEC).