Natural and forced convection simulations of a concentrating solar power receiver

Applied Computational Fluid Dynamics


Scientific Essay, 2016

44 Pages, Grade: A

Simon Homes (Author)


Abstract or Introduction

Concentrating Solar Power Receiver (CSPs) collect solar radiation with large mirrors and reflect them concentrated on a receiver. Here, a Dish-Stirling type thermal cycle is driven. One of the key preconditions for a cost competitive production of power is a good efficiency factor.

Within the framework of this project, we want to examine and qualitatively quantify the heat losses of a Dish Sterling Concentrating Solar Power Receiver. It is the aim to determine the individual driving forces for heat losses by analysing natural convection on the one hand and two different setups of forced convection on the other hand.

In section 2, we present the abstract model of a solar receiver. Then, we will discuss the necessary models to simulate turbulent flow and heat transfer of air and justify our choice of numerical methods to solve the governing equations in ANSYS Fluent. Furthermore, we will introduce performance factors to monitor the heat losses of the solar receiver.

Coherent with the two main physical phenomena of heat losses, we subdivided the report in normal convection (NC, section 3) and forced convection (FC, section 4), where we outline the specific model characteristics, boundary conditions, grid requirements and benchmarks respectively. A profound analysis of the results and an outlook on further research in section 5 finalise the report.

Details

Title
Natural and forced convection simulations of a concentrating solar power receiver
Subtitle
Applied Computational Fluid Dynamics
College
KTH Royal Institute of Technology  (School of Engineering Sciences)
Course
Applied Computational Fluid Dynamics
Grade
A
Authors
Year
2016
Pages
44
Catalog Number
V342045
ISBN (eBook)
9783668334373
ISBN (Book)
9783668334380
File size
41742 KB
Language
English
Notes
Xxxxxx (Dozent): Very nice and complete study. The quality is carefully assessed by all means. Nice and convincing mesh refinement study. Nice touch to define and use the Richardson extrapolation together with the mesh convergence for the forced convection. I also appreciate that you did the generic validation of natural convection. Your result is remarkable close to the empirical relation. The study is good with all relevant discussions. You clearly identified the interesting results and carefully compared the NC and FC. Finally, the additional combined NC and FC study was interesting.
Tags
CFD, ANSYS, KTH, Convection, Forced, Natural, Solar Receiver, Fluent, Navier Stokes, Computational Fluid Dynamics
Quote paper
Simon Homes (Author)Martin Rakowitsch (Author)Maximilian Scheid (Author), 2016, Natural and forced convection simulations of a concentrating solar power receiver, Munich, GRIN Verlag, https://www.grin.com/document/342045

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