Analysis of the thermal performance of a church window steam condenser for different operational conditions using three models

Prieto, M.M.; Suárez, I.; Montañés, Elena

doi:10.1016/s1359-4311(02)00159-x

Cited by 21 publications

(14 citation statements)

References 7 publications

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“…Malin used a 3-D model [7] to model a marine condenser. Ramon and Gonzalez developed a 3-D model of a church window type condenser [8], and Prieto et al compared the results of similar model to both HEI correlations and a 2-D simplification of the 3-D model [9]. Hu and Zhang developed improvements to turbulence [10] and inundation [11] modelling for numerical condenser simulations.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…The approaches studied in this paper are a 2-D model based on a geometrical simplification broadly similar to that presented by Prieto et al in [9] calculating the condenser as a heat exchanger network of smaller condensers, and a 0-D model based on an average U calculated at average flow conditions. The possibility of an even simpler implementation was investigated by comparing these results to calculation with an average U obtained from the HEI standards for steam surface condensers.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…In [9] the vapour phase heat transfer coefficient was determined according to Taborek [13] and the phase change and heat and mass transfer were modelled according to film theory by Colburn and Hougen [14], corrected by Ackermann's factor according to [15]. The condensate film heat transfer coefficient was obtained from Nusselt's correlation for single horizontal tube without vapour shear, originally presented in [16], and modified by a shear correction from [17].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of power plant steam condenser heat transfer models for on-line condition monitoring

Kaikko

Vakkilainen

Savolainen

2014

Applied Thermal Engineering

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of power plant steam condenser heat transfer models for on-line condition monitoring

Kaikko

Vakkilainen

Savolainen

2014

Applied Thermal Engineering

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“…However, this method does not take a number of factors into account, including the tube arrangement. Numerical simulations of the fluid flow and heat transfer in condensers have been conducted by many researchers [2][3][4][5][6][7][8][9][10], with predictions agreeing well with experimental data. The advantage of numerical simulations is that they can give more detailed information on the fluid flow and heat transfer in the condenser, which provides a more effective means for condenser design.…”

mentioning

confidence: 91%

Analysis of condenser shell side pressure drop based on the mechanical energy loss

Zeng

Jiang

2012

Chin. Sci. Bull.

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The condenser performance is strongly affected by the tube arrangement. The steam pressure drop in the tube bundle influences the condenser back pressure, which is an important indicator of the condenser performance used to compare different condenser tube arrangements. The condenser shell side pressure drop is studied here using the mechanical energy loss of the steam flow in the condensers. The mechanical energy loss is due to the flow resistance of the tube bundle and the steam condensation. Three typical tube arrangements are analyzed numerically. The results show that a higher condenser shell side pressure drop for different tube arrangements always corresponds to a larger mechanical energy loss. The mechanical energy loss is mainly in the periphery of the tube bundle, indicating that the flow pattern and the mechanical energy losses are markedly determined by the tube bundle profile. The condenser shell side pressure drop can be reduced by reducing the total mechanical energy loss when the steam enters the tube bundle more uniformly. Thus, a well designed tube arrangement will reduce the mechanical energy loss, and also the shell side pressure drop.power plant condenser, tube arrangement, shell side pressure drop, mechanical energy loss Citation:Zeng H, Meng J A, Li Z X. Analysis of condenser shell side pressure drop based on the mechanical energy loss.

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“…Mathematical modelling and heat transfer numerical simulations of power condensers have been carried out for many years by a number of scientists. Zero-dimensional [42][43][44][45][46][47][48][49][50], one-dimensional [49], two-dimensional [50][51][52][53][54][55][56][57], quasi-three-dimensional [58][59][60][61], and even three-dimensional [62,63] models have been developed. Due to considerable dimensions of power condensers (as the largest shell-and-tube heat exchangers), two-dimensional models are most often used from among multi-dimensional ones.…”

Section: Introductionmentioning

confidence: 99%

Determining the Optimum Inner Diameter of Condenser Tubes Based on Thermodynamic Objective Functions and an Economic Analysis

Laskowski

Smyk

Rusowicz

et al. 2016

Entropy

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Abstract:The diameter and configuration of tubes are important design parameters of power condensers. If a proper tube diameter is applied during the design of a power unit, a high energy efficiency of the condenser itself can be achieved and the performance of the whole power generation unit can be improved. If a tube assembly is to be replaced, one should verify whether the chosen condenser tube diameter is correct. Using a diameter that is too large increases the heat transfer area, leading to over-dimensioning and higher costs of building the condenser. On the other hand, if the diameter is too small, water flows faster through the tubes, which results in larger flow resistance and larger pumping power of the cooling-water pump. Both simple and complex methods can be applied to determine the condenser tube diameter. The paper proposes a method of technical and economic optimisation taking into account the performance of a condenser, the low-pressure (LP) part of a turbine, and a cooling-water pump as well as the profit from electric power generation and costs of building the condenser and pumping cooling water. The results obtained by this method were compared with those provided by the following simpler methods: minimization of the entropy generation rate per unit length of a condenser tube (considering entropy generation due to heat transfer and resistance of cooling-water flow), minimization of the total entropy generation rate (considering entropy generation for the system comprising the LP part of the turbine, the condenser, and the cooling-water pump), and maximization of the power unit's output. The proposed methods were used to verify diameters of tubes in power condensers in a200-MW and a 500-MW power units.

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Analysis of the thermal performance of a church window steam condenser for different operational conditions using three models

Cited by 21 publications

References 7 publications

Comparison of power plant steam condenser heat transfer models for on-line condition monitoring

Comparison of power plant steam condenser heat transfer models for on-line condition monitoring

Analysis of condenser shell side pressure drop based on the mechanical energy loss

Determining the Optimum Inner Diameter of Condenser Tubes Based on Thermodynamic Objective Functions and an Economic Analysis

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