A numerical study on thermal behavior of a D-type water-cooled steam boiler

Moghari, M.; Hosseini, S.; Shokouhmand, Hossein; Sharifi, Hussien Ali Muhammed Al; Izadpanah, S.

doi:10.1016/j.applthermaleng.2011.11.049

Cited by 22 publications

(10 citation statements)

References 13 publications

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“…It is found in several activities such as petro chemistry, processing industries, district heating, electrical facilities, and others (Moghari et al, 2012). Steam generators are vital to power and processing plants; they can be classified according to various parameters (Adam and Marchetti, 1999).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of a 374 tons/h water-tube steam boiler following a feedwater line break

Cheridi

Chaker

Loubar

2016

Annals of Nuclear Energy

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of a 374 tons/h water-tube steam boiler following a feedwater line break

Cheridi

Chaker

Loubar

2016

Annals of Nuclear Energy

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“…Steam production and utilization techniques are important aspects of engineering technology. Therefore, the steam generators are of capital importance for thermal power installation, they are a widely used for energy conversion equipment that transforms chemical energy into thermal energy to generate steam especially in the liquefaction [2]. Recently, industrial water-tube steam boilers have received great attention due to their benefits like simplicity, low costs and more particularity inherent safety [3].…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of a natural circulation water-tube steam boiler

et al. 2019

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In the present work, the overall behavior of a steam boiler is investigated using RELAP5/MOD3.2 system code at three different operating loads. Main thermal-hydraulic parameters are analyzed at steady-states corresponding to 60%, 100% and 110% of the boiler nominal load. RELAP5 system code is widely used in the design and safety analysis of nuclear reactor installations as well as for conventional facilities in recent years. The steam boiler studied herein is a water-tube natural circulation type used in a natural gas liquefaction complex for superheated steam production purposes. A complete model of the steam boiler has been developed for the RELAP5 code. This model, that is also suitable for transient simulation, has been used for the reconstruction of three steady-state tests in order to assess the steam boiler safety features during the operation. The model includes all parts that can eventually influence the safety of the steam boiler particularly the control and regulation system. A qualification process has been undertaken in the aim to verify the capability of the model to reproduce the main parameters of the steam boiler. This process revealed that RELAP5 system code results matches significantly the experimental data of the steam boiler. Finally, it should be mentioned that the results obtained so far are very encouraging for studying the general behavior of the steam boiler in transient operating conditions, as well as for evaluating its safety under hypothetical scenarios. This step will be undertaken in the near future and will allow the check of the code capability to simulate thermal-hydraulic phenomena occurring in the steam boiler during transient operation.

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“…It was shown that the maximum deviation between the results obtained by using this formula and CFD simulation is 12,5%. Moghari et al [21] employed zonal method to assess thermal radiation behavior within a D-type water-cooled steam boiler. The estimation of radiation and convection heat transfer coefficients in different equipment in boilers, such as economizer, was obtained by using zonal method.…”

Section: Introductionmentioning

confidence: 99%

Effects of Fin Spacing and Gas Radiation on Heat Transfer in Utility Boiler Economizers

et al. 2019

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The aim of this paper is to estimate fin spacing and gas radiation effects on heat transfer in utility boiler economizers to achieve the highest feed water temperature, and the biggest amount of heat transferred from flue gases to economizer tubes. This study is carried out for five different cases including a bare tube economizer and four finned-tube economizers with different fin spacing values. A finite volume method is employed to discretize and solve the governing equations for all cases in 3D. As a result, for verification purpose, the present numerical result is compared to the experimental outputs and it shows that the average Nusselt number difference is 15%. The finnedtube economizer with fin spacing value of 21mm absorbs the biggest amount of heat, and it has the highest outlet feed water temperature; therefore, it has the best thermal performance among the other cases. It is also concluded that radiation heat transfer mechanism has a minor effect on heat exchange in utility boiler economizers.

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A numerical study on thermal behavior of a D-type water-cooled steam boiler

Cited by 22 publications

References 13 publications

Numerical simulation of a 374 tons/h water-tube steam boiler following a feedwater line break

Numerical simulation of a 374 tons/h water-tube steam boiler following a feedwater line break

Modeling and simulation of a natural circulation water-tube steam boiler

Effects of Fin Spacing and Gas Radiation on Heat Transfer in Utility Boiler Economizers

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