brændselsstænger

A brændselsstang, which translates to fuel rod in English, is a component used in nuclear reactors. It consists of a tube, typically made of a metal alloy like zirconium, containing nuclear fuel. The most common nuclear fuel used in these rods is uranium, often in the form of uranium dioxide pellets. These pellets are stacked end-to-end within the tube, which is then sealed.

The primary function of a brændselsstang is to hold the nuclear fuel and allow for efficient heat transfer during nuclear fission. The fission process, where atomic nuclei split and release energy, occurs within the fuel. This energy is released as heat, which is then transferred through the brændselsstang to a coolant, such as water or gas, circulating around it. This heated coolant is then used to generate steam, which drives turbines to produce electricity.

Fuel rods are bundled together to form fuel assemblies, which are then loaded into the core of a nuclear reactor. The design and material of the brændselsstang are crucial for reactor safety and efficiency, ensuring that the fuel remains contained and that heat is effectively managed. Over time, the fuel within the rods is consumed, and spent fuel rods are eventually removed from the reactor and stored.