Heavy Water

Heavy water is a liquid similar to regular water but has 2 deuterium atoms instead of 2 hydrogen atoms, hence its name.

Heavy Water
Fluid icon for heavy water.
Properties
Type	Liquid
Made With/By	Other
Difficulty of Production	Easy-Medium
Exists in Reality	Yes
Can Be Placed	No
Temperature	~20°C
Renewable?	Yes
Warnings
Fire Diamond NFPA 704 1 0 0 Heavy Water

Production

It can be made with 2 machines: the deuterium extractor and the deuterium extraction tower.

The deuterium extractor is the smaller machine, being only one block. It requires power to function and turns water into heavy water in a 10:1 ratio. The deuterium extraction tower is a pseudo-multiblock machine that works the same as the deuterium extractor, but faster than it.

The deuterium extraction tower is made in an anvil:

8

4

2

4

4

2

The deuterium extraction tower is also made in an anvil:

2

5

8

4

16

12

8

The deuterium extraction tower has a dedicated item, the deuterium filter, which is made in the crafting table:

Uses

Heavy Water
Properties
Temperature	600°C

Heavy water can be electrolyzed in either a chemical plant or electrolyzer:

2,000mB

200mB

200mB

The main use of heavy water is as a PWR coolant. It has a thermal capacity of 300 TU/mb, similar to regular coolant.

However, unlike regular coolant, heavy water is also a flux multiplier for the PWR, adding +25% to the core flux, increasing the reactor's efficiency.

Despite the hot variant being under the melting point of the RBMK columns, it is not compatible with the RBMK because it would behave the same as regular coolant, and the flux multiplication feature doesn't work in the RBMK.

Images

The deuterium extractor block

The deuterium extraction tower.