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Models comparative study for heat storage in fixed beds; Estudo comparativo de modelos para armazenamento de calor em leitos fixos

Abstract

This work presents comparative results of a numerical investigation of four possible models for the prediction of thermal performance of fixed bed storage units and their thermal design. These models includes Schumann's model, the radial dispersion model, a model that include both axial heat conduction in the fluid phase and admits thermal gradient in the solids particles and finally a two dimensional single phase model. For each of these models a computer code was written and tested to evaluate the computing time of same data and analyze any other computational problems. The tests of thermal performance included particle size, porosity, particle material, flow rate, inlet temperature and heat losses form tank walls and extremities. Dynamics behaviour of the storage units due to transient variation in either flow rate or inlet temperature was also investigated. The results presented include temperature gradients, pressure drop and heat storage. The results obtained are very useful for analysis and design of fixed bed storage units. (author)
Publication Date:
Jul 01, 1991
Product Type:
Thesis/Dissertation
Report Number:
ETDE-BR-0173
Reference Number:
EDB-01:029526
Resource Relation:
Other Information: TH: Tese (M.Sc.); 40 refs., 46 figs., 20 tabs.; PBD: 1991
Subject:
25 ENERGY STORAGE; HEAT STORAGE; PACKED BEDS; FLUIDIZED BEDS; NUMERICAL ANALYSIS; COMPUTERIZED SIMULATION; COMPARATIVE EVALUATIONS; FORECASTING; THERMAL ANALYSIS; TEMPERATURE DEPENDENCE; THERMAL CONDUCTION; HEAT TRANSFER; THERMAL CONDUCTIVITY; COMPUTER CODES; COMPUTER CALCULATIONS; MATHEMATICAL MODELS; PERFORMANCE TESTING; TEMPERATURE GRADIENTS
OSTI ID:
20113073
Research Organizations:
Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR00B0233
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20113073
Submitting Site:
BR
Size:
148 pages
Announcement Date:

Citation Formats

Stuginski, Junior, Rubens. Models comparative study for heat storage in fixed beds; Estudo comparativo de modelos para armazenamento de calor em leitos fixos. Brazil: N. p., 1991. Web.
Stuginski, Junior, Rubens. Models comparative study for heat storage in fixed beds; Estudo comparativo de modelos para armazenamento de calor em leitos fixos. Brazil.
Stuginski, Junior, Rubens. 1991. "Models comparative study for heat storage in fixed beds; Estudo comparativo de modelos para armazenamento de calor em leitos fixos." Brazil.
@misc{etde_20113073,
title = {Models comparative study for heat storage in fixed beds; Estudo comparativo de modelos para armazenamento de calor em leitos fixos}
author = {Stuginski, Junior, Rubens}
abstractNote = {This work presents comparative results of a numerical investigation of four possible models for the prediction of thermal performance of fixed bed storage units and their thermal design. These models includes Schumann's model, the radial dispersion model, a model that include both axial heat conduction in the fluid phase and admits thermal gradient in the solids particles and finally a two dimensional single phase model. For each of these models a computer code was written and tested to evaluate the computing time of same data and analyze any other computational problems. The tests of thermal performance included particle size, porosity, particle material, flow rate, inlet temperature and heat losses form tank walls and extremities. Dynamics behaviour of the storage units due to transient variation in either flow rate or inlet temperature was also investigated. The results presented include temperature gradients, pressure drop and heat storage. The results obtained are very useful for analysis and design of fixed bed storage units. (author)}
place = {Brazil}
year = {1991}
month = {Jul}
}