ARTICLE:

• Experimental investigations of heat transfer from a circular pipe to lead coolant with controlled content of oxygen impurity  download article

A.V. Beznosov
Nizhny Novgorod State Technical University, Minin st. 24, 603600, Nizhny Novgorod, Russia

A.V. Semyonov
Nizhny Novgorod State Technical University, Minin st. 24, 603600, Nizhny Novgorod, Russia

S.S. Pinaev
Nizhny Novgorod State Technical University, Minin st. 24, 603600, Nizhny Novgorod, Russia

D.V. Davidov
Nizhny Novgorod State Technical University, Minin st. 24, 603600, Nizhny Novgorod, Russia

T.A. Bokova
Nizhny Novgorod State Technical University, Minin st. 24, 603600, Nizhny Novgorod, Russia

Yu.I. Orlov
State scientific center of Russian Federation, Institute of Physics and Power Engineering, 1 Bondarenko Sq., 249033, Obninsk, Russia

A.V. Zhukov
State scientific center of Russian Federation, Institute of Physics and Power Engineering, 1 Bondarenko Sq., 249033, Obninsk, Russia

A. D. Efanov
State Scientific Center of the Russian Federation - Physical and Power Engineering Institute, 1 Bondarenko Sq., 249033, Obninsk, Russia

ABSTRACT

The characteristics of heat exchange between the construction material wall and a heavy liquid-metal coolant (HLMC) essentially depend on the state of the wall-liquid metal boundary region.
An experimental stand was designed and the characteristics of the heat exchange from the electrically heated circular pipe surface to the lead coolant were investigated.
The experimental method consisted in the determination of the Nu=f(Pe) dependence and sequential cycles: "oxygen introduction-time interval-hydrogen introduction".
The test results were employed to obtain the calculation formulae for the given heat exchange conditions for various contents of oxygen impurity in the lead coolant circuit and different regimes of circuit exploitation.

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