Heterogeneous Reactor

heterogeneous reactor

[‚hed·ə·rə′jē·nē·əs rē′ak·tər]
A nuclear reactor in which fissionable material and moderator are arranged in a regular pattern of discrete bodies with dimensions such that a nonhomogeneous medium is presented to neutrons.

Heterogeneous Reactor


a nuclear reactor that is constructed to isolate the fuel from the other elements and materials of the core.

The presence of heat-releasing elements, such as fuel assemblies and fuel channels, is an indication of the heterogeneous nature of a reactor. The heat-releasing elements can be of the most diverse shapes in construction (plates, for example, or rods of round, cruciform, or annular cross section), but in every case there is a sharp boundary in the heterogeneous reactor between the nuclear fuel, the moderator, and the coolant.

In practice, the vast majority of nuclear reactors of all possible types and purposes are heterogeneous. This broad distribution of heterogeneous reactors is due to their vastly greater constructional and technological advantages in comparison to homogeneous reactors.


References in periodicals archive ?
The contract is the delivery device for dispensing steam and vapor phases in chemical reactors and analytical instruments operating in a defined and programmable steam and gas atmosphere, which is owned ceitec-but (for example, high heterogeneous reactor or a thermal analyzer sta / ms).
The only notable omission from the book is a detailed discussion of industrial heterogeneous reactor scale-up, design, and operation issues.
silicon-based microreactors; chemical microprocess engineering; early-stage microchannel reactor development at Pacific Northwest National Laboratory; and parallel heterogeneous reactor systems for catalyst screening.

Full browser ?