The numerical and experimental study of two passes power plant condenser

Abstract

The steam condenser is one of the most important element in whole power plant installation. Their proper design and operation makes a significant contribution to the efficiency of electricity production. The purpose of this article is to propose a two-dimensional mathematical model that allows modeling condenser work. In the model, the tube bundle is treated as a porous bed. The analysis has been subjected to a two passes power condenser with a capacity of 50 MW. The mathematical analysis was compared with the results of experimental studies. The average error between the model and the experiment for difference of cooling water temperatures was 5.15% and 11.60% for the first and second pass respectively. This allows to conclude that the proposed model is good enough to optimize future work of the condenser.

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

“…As reported by Rusowicz et al (2017), condensers flow parameters vary not only in two directions in the cross-sectional plane of the tube bundle, but also along the bundle. Thus, due to the three-dimensional nature of the flow, a threedimensional model is the one that most adequately describes processes occurring in the condenser.…”

“…Their modified algorithm was able to evaluate the reliability of reference thermal power plant system and also present the optimised operating conditions for the other nominal powers. Rusowicz et al (2017) proposed a two-dimensional steadystate numerical model to predict the fluid flow and the heat transfer in an operating two-tube pass condenser in a 50 MW power plant. The model considered the tube bundle in the condenser to be porous.…”

“…The flow in real condensers is, however, three-dimensional and hence, three-dimensional models are needed to capture the full flow details (Rusowicz et al, 2017). Roy et al (2001) reported a quasi-three-dimensional steady-state steady-flow model to investigate the influence of air in-leakage on the efficiency of a condenser in a 750 MW power unit.…”

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

“…Nedelkovski et al [29] developed a finite element method to solve threedimensional single-phase equations for the condenser where the effect of non-condensable gases was considered. Later, Rusowicz [30] performed the simulation using a single-phase two-dimensional steady state model on a 50 MW plant condenser and reported satisfactory results. Zeng et al [4] solved the single-phase mixture equation for the mixture of steam and non-condensable gases in addition to the RNG k-e model to study the effect of different tube arrangements for a 300 MW power plant condenser.…”

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

“…In most of the earlier researches, the effect of turbulence was neglected [16][17][18][19][20][21]. Later, a constant viscosity ratio or a simple algebraic equation was used to account for the turbulence [22][23][24].…”