An isentropic reservoir can be installed in the Augmentation tab in a magmatic dynamo’s GUI. It is a specialization that cannot be installed together with other specialization augments.
An installed isentropic reservoir quadruples the maximum power output of a magmatic dynamo, and increases the amount of Redstone Flux it generates from each unit of fuel by 15%. However, the dynamo requires coolant as well as fuel to generate energy.
Coolant, like fuel, is consumed in batches of 100 mB. Every batch of coolant can be used to generate a certain amount of energy; this amount is equal to the thermal capacity of the used coolant.
A magmatic dynamo with an isentropic reservoir installed generates more energy from the same amount of fuel when stronger coolants are used. The amount of energy generated from each batch of fuel is increased by the coolant factor of the used coolant minus 20% (the coolant factor of water). For example, using a coolant with a coolant factor of 50% increases the amount of energy generated by 30%.
If an isentropic reservoir is installed together with other augments that affect the amount of energy generated from each unit of fuel, their energy increase/decrease percentages are added together before being applied to the amount of energy. The energy increase percentage from coolants is also added in this way.