Electrical heating device for heating a liquid, method for producing same, and use in the electrical simulation of nuclear fuel rods

摘要

A device for the electrical heating of a liquid with high thermal flow, according to which the resistor in tubular form and supplied with direct current can indirectly heat the liquid by conduction through an electrically insulating and thermally conductive intermediate element that surrounds it with direct mechanical contact, the assembly consisting of tubular resistor and intermediate element being jacketed by a sheath intended to be immersed, over at least a major part of the length thereof, in the liquid to be heated. The preferred application is the electrical simulation of nuclear fuel rods intended to be assembled in power reactors, of the PWR but also RNR-Na type.

主权项

1. Device for the electrical heating of liquid comprising:
a first tube made from electrically conductive material forming a resistor, two electrical connections, each fitted in one of the ends of the resistor, one of the electrical connections being adapted to bring a direct current through the resistor and the other electrical connection being the current output connection, an intermediate element, made from material that is both thermally conductive and electrically insulating, surrounding, with direct mechanical contact, respectively the resistor and the two electrical connections over at least part of their length, a second tube forming a sheath, made from thermally conductive material and surrounding the thermally conductive intermediate element with direct mechanical contact, the sheath being intended to be immersed, over at least a major part of its length, in the liquid to be heated.