Experimental investigation of fludized bed to be used as solar thermal energy storage

Download

index.pdf

Date

2019

Author

Polat, Esra

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

134
views

51
downloads

An air-granular particle fluidized bed system with dimensions of 0.08 m x 0.4 m x 0.08 m designed and analyzed experimentally and modeled with a commercial CFD software. The aim of the hydrodynamic and thermal experiments is validation of the numerical model previously developed by Serdar Hiçdurmaz. For this purpose, an experimental setup is built at METU and CFD model of Hiçdurmaz is modified for the new geometry with the same solution settings. First-order time discretization and Eulerian-Eulerian approach are used in the model. Syamlal O’Brien drag model and Gunn thermal model are applied. Silica sand from Geldart B type particles is used in both experimental and numerical studies. After sand particles, all experimental studies are repeated with sintered bauxite particles, which are called CARBOHSP, to compare the behaviors of different particles in the fluidized bed system. Experimental results of pressure drop and bed height expansion are used for validating the CFD model. During thermal experiments, 585 K hot sand is used and, with K-type thermocouples, temperatures are measured and compared with the simulation results. Both hydrodynamical and thermal experimental results are consistent with the CFD results.

Subject Keywords

Energy storage., Thermal Energy Storage, Bubbling Fluidized Bed, Multiphase Flow.

URI

http://etd.lib.metu.edu.tr/upload/12623965/index.pdf
https://hdl.handle.net/11511/44069

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

A Combined Experimental and Numerical Thermo-Hydrodynamic Investigation of High-Temperature Fluidized-Bed Thermal Energy Storage Mehrtash, Mehdi; Polat Karadiken, Esra; Tarı, İlker (2022-06-01) The present research describes the design, analysis, and modeling of an air-granular particle fluidized-bed system with dimensions of 0.08 m × 0.4 m × 0.08 m. The hydrodynamic and thermal experiments are designed to verify the numerical model previously created for this purpose. The gas-solid two-phase flow is described using a three-dimensional, two-fluid model based on the Eulerian–Eulerian method. The experiment is conducted, and the numerical model is updated for the new geometry while maintaining the s...
Measurement of the differential dijet production cross section in proton-proton collisions at root s=7 TeV Chatrchyan, S.; et. al. (Elsevier BV, 2011-06-01) A measurement of the double-differential inclusive dijet production cross section in proton-proton collisions at root s = 7 TeV is presented as a function of the dijet invariant mass and jet rapidity. The data correspond to an integrated luminosity of 36 pb(-1), recorded with the CMS detector at the LHC. The measurement covers the dijet mass range 0.2 TeV to 3.5 TeV and jet rapidities up to vertical bar y vertical bar = 2.5. It is found to be in good agreement with next-to-leading-order QCD predictions. (C)...
Measurement of the inelastic proton-proton cross section at root s=13 TeV Sirunyan, A. M.; et. al. (Springer Science and Business Media LLC, 2018-07-01) A measurement of the inelastic proton-proton cross section with the CMS detector at a center-of-mass energy of root s = 13 TeV is presented. The analysis is based on events with energy deposits in the forward calorimeters, which cover pseudorapidities of -6.6 4.1 GeV and/or M-Y > 13 GeV, where M-x and M-Y are the masses of the diffractive dissociation systems at negative and positive pseudorapidities, respectively. The results are compared with those from other experiments as well as to predictions from hi...
Shape, transverse size, and charged-hadron multiplicity of jets in pp collisions at root s=7 TeV Chatrchyan, S.; et. al. (Springer Science and Business Media LLC, 2012-06-01) Measurements of jet characteristics from inclusive jet production in proton-proton collisions at a centre-of-mass energy of 7 TeV are presented. The data sample was collected with the CMS detector at the LHC during 2010 and corresponds to an integrated luminosity of 36 pb(-1). The mean charged-hadron multiplicity, the differential and integral jet shape distributions, and two independent moments of the shape distributions are measured as functions of the jet transverse momentum for jets reconstructed with t...
Measurement of the inelastic cross section in proton-lead collisions at root s(NN)=5.02 TeV Khachatryan, V.; et. al. (Elsevier BV, 2016-08-01) The inelastic hadronic cross section in proton-lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L = 12.6 +/- 0.4 nb(-1), has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton-lead collisions with hadronic activity produced in the pseudorapidity ranges 3 < eta < 5 and/or -5 < eta < -3, corre...

Citation Formats

E. Polat, “Experimental investigation of fludized bed to be used as solar thermal energy storage,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2019.