Three-dimensional numerical model for the two-phase flow and heat transfer in condensers

Mirzabeygi, Pooya; Zhang, Chao

doi:10.1016/j.ijheatmasstransfer.2014.10.015

Cited by 30 publications

(5 citation statements)

References 23 publications

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“…Mirzabeygi and Zhang [55] demonstrated that there is no significant difference between these two approaches specially in small scale condensers. For large scale condensers, there are always Table 1 Time scales and coefficients for different models.…”

Section: Methodsmentioning

confidence: 99%

Turbulence modeling for the two-phase flow and heat transfer in condensers

Mirzabeygi

Zhang

2015

International Journal of Heat and Mass Transfer

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Section: Methodsmentioning

confidence: 99%

Turbulence modeling for the two-phase flow and heat transfer in condensers

Mirzabeygi

Zhang

2015

International Journal of Heat and Mass Transfer

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“…So it can be said that the surface condenser as a heat absorber has an essential role in creating reliable power plant performance. So it is necessary to carry out proper operation and maintenance, and engineering modifications to the surface condenser to maintain or improve the performance of the surface condenser [3][4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of The Power Plant Surface Condenser to Prevent High Pressure in Critical Areas

Novianarenti¹,

Putra

Nugroho

et al. 2021

JMESI

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A numerical study to reduce the condenser pressure in critical areas of a power plant surface condenser has been carried out. Numerically, effects are considered through a three-dimensional simulation approach. Modifying by adding a guide plate with a three variation of angle, (?) 15?, 30?, 45? in the surface condenser area to reduce the dynamic forces and pressure due to the collision of fluid flow in the critical pipeline without reducing the purpose of the design of shell and tube heat exchanger results in transferring heat. The drag force caused by the interaction of the shear layer with the surface of the body is very undesirable, so that the control of the flow fields is needed, one of which is by optimal angle guide plate of the pipe arrangement in the critical area. This study aims to determine the optimal plate angle to overcome high pressure in the critical area. This research was numerically conducted using 3D CFD ANSYS 14.5 software with a turbulence model using a standard k-? using a pressure-based solution solver. The initial stage takes geometric data on the surface condenser in the design specification as the basis for making the domain and data from before as boundary conditions in the simulation research process. The result is that with the addition of guide plates, the average drag coefficient (Cd) is reduced compared to the average Cd in the baseline conditions and angle variation (?) 15?, 30?, 45? is 0.537; 0.644; 0.446; 0.464. Taking into this aspect, the most optimal plate angle is 30?. The simulation results show that changing the angle of the plate can reduce the Nusselt value than the baseline conditions.

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“…Condensation heat transfer has a significant duty in many industrial processes, such as thermal power plant, heavy industry, cooling and, air-conditioning cycles. Various physical processes are comprised in the condensation phenomena, their relative significance depending on the conditions and implementations [3][4].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Large-Scale Steam Condenser Used in a Steam Power Plant

Tontu

2020

European Mechanical Science

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This paper summarizes performance analysis of large-scale seawater-cooled box type condenser in a 660 MW steam power plant. Effect of seawater temperature and steam mass flow rate are investigated on the key performance parameters of steam condenser. Results indicated that improvement in the cooling water temperature generally is found favorable on the performance indicators of condenser. Condenser effectiveness improves by increasing of sea water temperature also its value enhances from 0.27 to 0.48. On the contrary TTD value decreases accordingly. On the other hand, in the case of steam flow rate changing, effectiveness and overall heat transfer coefficient almost remain constant. Effectiveness of condenser isn't found as a function of steam flow variation. Moreover, steam power plant heat rate is investigated as a function of cooling water of condenser and thus it is seen to be decreased in the result of improvement of cooling water temperature. Conversely, power plant overall thermal efficiency decreases from 39.85 % to 38.72 % due to reduction of power generation.

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Three-dimensional numerical model for the two-phase flow and heat transfer in condensers

Cited by 30 publications

References 23 publications

Turbulence modeling for the two-phase flow and heat transfer in condensers

Turbulence modeling for the two-phase flow and heat transfer in condensers

Numerical Study of The Power Plant Surface Condenser to Prevent High Pressure in Critical Areas

Performance Analysis of a Large-Scale Steam Condenser Used in a Steam Power Plant

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