Enhancement of heat transfer in the RBMK and RBMKP

Abstract

The increase of unit power of nuclear reactors and the related increase in heat removal is one of the pressing problems of the development of nuclear power. An effective way of solving this problem is the enhancement of heat transfer in fuel-element assemblies (FEA). Heat-removal enhancement is a complicated problem, related not only to an increase in heat removal while maintaining the accepted criteria of the working capacity of the fuel elements, but also to the solution of such concomitant problems as the decrease of the energy expended to pump through the coolant, the guarantee of the necessary technological effectiveness of the proposed enhancement devices, the account of the possible effect of these devices on the physical parameters of the core, etc. This paper discusses the different approaches to the increase of heat removal in FEA with two- and single-phase coolants.