Boils water to drive an enormous piston. Generates up to 21W using thermal fuels such as lava or core fragments. Each slot outputs independently. Needs water coolant.Left Input: On/Off Switch
It has 3 slots for fuel, but it's not necessary to fill them all: if you place Lava into one of the slots, it will generate 4W, but if you fill 3 slots, it will generate 12W. As the Dynamo consumes fuel, it will also consume a unit of liquid. If you have 100 units of fuel in each fuel slot, you'll need 300 units of liquid to use them all.
The Hydraulic Dynamo can generate up to 21W of energy (using either 3 Scorched Core or 3 Volatile Powder).
Hydraulic Dynamo is a popular choice to power an early-game factory that centrifuges infinite Lava (pumped from the core ocean). Lava itself is not a very good fuel, but better Core Fragment and Volatile Powder can be obtained from Lava automatically.
The fact that Liquid Nitrogen (which is very cold) is accepted as fuel is not a joke. Engines that use Liquid Nitrogen actually exist out-of-game: https://en.wikipedia.org/wiki/Liquid_nitrogen_engine . However, this type of engine uses nitrogen as an expanding fluid that drives a dynamo, in the same way as water in a normal steam engine or compressed air in pneumatic motor. Liquid nitrogen as literal fuel is technically inappropriate.
The Hydraulic Dynamo is 8 blocks long and 14 tiles tall, which makes it the biggest early game reactor.
Steam Power (Electronics tree).