Numerical Analysis Of The Dirt On The Performance Of Condenser And Steam Turbine

The performance of the condenser which is an important part ofthermal power plant steam turbine generator sets has a significant impacton operational safety and economy of the unit. Most condensers operatein the case of different degrees of dirt. And dirt has seriously affected theheat transfer performance of condenser and the steam turbine power.Therefore, it is necessary to quantitatively acknowledge the dirt affects indetail.In this paper, on the basis of the existing numerical simulationresearch of the shell side flow and heat transfer for condenser, thenumerical simulation of the shell side flow and heat transfer forcondenser have achieved on the platforms in commercial software Fluentby writing, compiling and loading the user defined functions of themixture physical parameters, the mass and the momentum source term.And then, a simplify condenser mode with experimental data is simulatedto verify the correctness of the numerical method in simulating thecondenser on Fluent platforms based on the comparison of theexperimental data.Finally, the two-dimensional and three-dimensional model of theshell side flow and heat transfer for a condenser is simulated in the wayof the application of the numerical simulation. With the results of thedetailed distribution of speed, pressure, heat transfer coefficient,condensation, and air concentration, the performances of the shell sideflow and heat transfer for the condenser are analyzed. On this basis, theeffects of different thickness of the dirt on the bundles water side havebeen researched. Matching the performance curve of condenser and air ejector, the condenser operating point with different thickness dirt isdetermined. And then, the dirt effects on the performance of condenserand steam turbine are quantitatively analyzed in detail for supporting theengineering staff and learn more about the dirt affects and reasonableimplementation of the cooling pipe cleaning.