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Titolo:
Sensitivity and uncertainty analysis of heat-exchanger designs to physicalproperties estimation
Autore:
Clarke, DD; Vasquez, VR; Whiting, WB; Greiner, M;
Indirizzi:
Univ Nevada, Div Chem Engn, Reno, NV 89557 USA Univ Nevada Reno NV USA 89557 v Nevada, Div Chem Engn, Reno, NV 89557 USA
Titolo Testata:
APPLIED THERMAL ENGINEERING
fascicolo: 10, volume: 21, anno: 2001,
pagine: 993 - 1017
SICI:
1359-4311(200107)21:10<993:SAUAOH>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONTE-CARLO APPROACH; MODEL PARAMETER-ESTIMATION; THERMODYNAMIC MODELS; PROCESS PERFORMANCE; COMPUTER-MODELS; SIMULATION;
Keywords:
uncertainty; sensitivity; statistical methods; random error; systematic error; uncertainty propagation; Monte Carlo; stochastic processes; bias; heat exchangers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Vasquez, VR Univ Nevada, Div Chem Engn, Mail Stop 170, Reno, NV 89557 USA Univ Nevada Mail Stop 170 Reno NV USA 89557 Reno, NV 89557 USA
Citazione:
D.D. Clarke et al., "Sensitivity and uncertainty analysis of heat-exchanger designs to physicalproperties estimation", APPL TH ENG, 21(10), 2001, pp. 993-1017

Abstract

We have used Monte Carlo methods to study the sensitivity and uncertainty of heat exchanger designs to physical properties estimation, The determination of appropriate confidence intervals for the overall heat-transfer coefficient and total required heat-exchange area plays a very important role inheat-exchanger thermal designs. The physical property models used exhibit systematic and random errors, which can change depending on how the models are used. Of particular interest in this work were the errors in propertiesestimation at high temperatures. Experimental physical properties of hot-gas mixtures at high temperatures (i.e., combustion gases) are very limited,and heat-exchanger simulation and design relies heavily on predictive models for physical properties. In this work, case studies of heat-exchanger performance and design under the influence of random and systematic errors onproperty estimation are presented, The results show that the performance and design can be very sensitive to errors in physical properties, The analysis method proposed can be used to identify when and which, properties playa significant role in the error propagation for this type of equipment, Further, the methodology proposed can be used to study the uncertainty in heat-exchanger performance and cost introduced by these types of errors, (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 09/04/20 alle ore 10:14:30