Heat transfer in coiled type superheater of moisture separator-reheater of turbines at the nuclear power plant

International Scientific and Practical Conference: Water Power Energy Forum 2018

Egorov, Mikle^1 ; Kalyutik, A.A.^1 ; Akhmetova, I.G.^2 ; Makoev, S.O.^1

Peter the Great St.Petersburg Polytechnic University, Institute of Energy and Transport Systems, Polytechnicheskaya, 29, 195251, Russia^1

Federal State Budgetary Educational Institution of Higer Education, Kazan State Power Engineering University, Krasnoselskaya street, 51, Kazan, Russia^2

关键词: Artificial roughness;    High-pressure steam;    Low pressures;    Moisture separators;    Single phase;    Straight tubes;    Turbine inlets;    Turbine stages;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/288/1/012080/pdf
DOI  :  10.1088/1755-1315/288/1/012080

来源: IOP

【 摘 要 】

The reheating part of the moisture separator-reheater (MSR) of nuclear power plant (NPP) steam turbine occupies a significant part of MSR volume and requires large consumption of metal. The superheating of low pressure steam provides by the high pressure steam condensation. This steam supplies partly from turbine inlet and partly from turbine stage bleeding because of two superheater stages. The significantly less heat transfer intensity at the single-phase side of reheater comparatively with condensation side requires intensification of heat transfer from the heated-steam. For such goal the different methods can be used: for instance the cross flow of the coiled tubes and finning of straight tubes bundles. Also is perspective the usage of artificial roughness in form of small "moons" and other types of artificial roughnesses.