(Answered) Water for fusion reactor - how much per day?

[Kret69]

Hi,

not sure if this question should go here but this is an issue outside of combat area. If the place is inappropriate please move it to the proper section.

The "fuel" for fusion reactors that powers Mechs is said to be water. My question would be, how often would one need to refuel the Mech with water during a prolonged operation? Also, any other liquids I should consider (coolant?) and if so, in what amounts?

I realize this might be somewhere in the rules - if so, I will just appreciate guidance.

Best regards

Krzysztof

[Xotl]

p. 35 of TechManual identifies that a bladder is sufficient for a 'Mech.

In fusion reactors today, this normal hydrogen
is easily extracted from any number of sources, especially
water. This is why most military fusion engines include a
small electrolysis unit to extract hydrogen from water. Those
tales you may have heard, of MechWarriors “refueling” their
BattleMechs with urine? They aren’t myths.

Depending on your assumptions of power output (10s of MW to 10s of GW) of energy weapons and fusion reactors in general, reactors of non-spacecraft should be consuming hydrogen fuel in terms of grams per day and kilograms per year.  But ultimately we're not going to give hard numbers here: let the debates begin over how large a "bladder" should be.