Publication detail
Alternative Approach to Modelling of Fluid Distribution in a Parallel Flow System
TUREK, V. JEGLA, Z. STEHLÍK, P.
Czech title
Alternativní přístup k modelování rozdělení toku v paralelním trubkovém systému
English title
Alternative Approach to Modelling of Fluid Distribution in a Parallel Flow System
Type
journal article - other
Language
en
Original abstract
This paper presents a developed mathematical model of one-dimensional steady single-phase fluid flow in a parallel system of an economizer for high-pressure (10 MPa) water preheating. Preliminary design of the flow system from the technical-economic point of view is used as a basis for geometry optimization ensuring as low a fluid distribution non-uniformity as possible. The model is utilized for prediction of fluid distribution, outlet temperature and pressure drop on tube side with regard to a known range of operating conditions. It can be used for both incompressible and compressible fluids. Due to the structure of the serpentine coil, a non-uniform heat flux density along the length of individual tubes as well as their different lengths are taken into account.
Czech abstract
Tento příspěvek popisuje vyvinutý matematický model jednorozměrného ustáleného jednofázového proudění v paralelním trubkovém systému ekonomizéru pro předehřev vysokotlaké (10 MPa) vody. Předběžný návrh systému vycházející z technicko-ekonomické analýzy byl použit pro optimalizaci geometrie za účelem dosažení co možná nejnižší nerovnoměrnosti rozdělení toku. Model je používán pro predikci rozdělení toku, výstupní teploty vody a tlakové ztráty na straně trubek s ohledem na známé rozsahy jednotlivých pracovních parametrů. Lze jej použít pro nestlačitelná i stlačitelná média. Vzhledem ke struktuře trubkového hadu model předpokládá různé délky trubek a nekonstantní tepelný tok po jejich délkách.
English abstract
This paper presents a developed mathematical model of one-dimensional steady single-phase fluid flow in a parallel system of an economizer for high-pressure (10 MPa) water preheating. Preliminary design of the flow system from the technical-economic point of view is used as a basis for geometry optimization ensuring as low a fluid distribution non-uniformity as possible. The model is utilized for prediction of fluid distribution, outlet temperature and pressure drop on tube side with regard to a known range of operating conditions. It can be used for both incompressible and compressible fluids. Due to the structure of the serpentine coil, a non-uniform heat flux density along the length of individual tubes as well as their different lengths are taken into account.
Keywords in Czech
rozdělení toku, jednofázové proudění, paralelní trubkový systém, tepelný tok
Keywords in English
flow distribution, single phase flow, parallel flow system, heat flux
RIV year
2011
Released
11.05.2011
Publisher
AIDIC Servizi S.r.l.
Location
Milano, Italy
ISSN
1974-9791
Journal
Chemical Engineering Transactions
Volume
25
Number
1
Pages from–to
237–242
Pages count
6
BIBTEX
@article{BUT50945,
author="Vojtěch {Turek} and Zdeněk {Jegla} and Petr {Stehlík},
title="Alternative Approach to Modelling of Fluid Distribution in a Parallel Flow System",
journal="Chemical Engineering Transactions",
year="2011",
volume="25",
number="1",
month="May",
pages="237--242",
publisher="AIDIC Servizi S.r.l.",
address="Milano, Italy",
issn="1974-9791"
}