Hydrogen Vent

Hydrogen Vent is a geyser that emits hot Hydrogen Gas at 500 °C. Because the output is already extremely hot, a normal gas pumping setup will usually need active cooling in the vent chamber; even a Steel Gas Pump can overheat if the gas is handled carelessly, so Thermium or more advanced pumping and cooling arrangements are often used.

Its output is also a notable heat source. Due to Hydrogen’s high specific heat capacity, a Hydrogen Vent has one of the highest heat outputs among gas vents, behind only the Steam Vent. Its average output is about 105 g/s over the full activity cycle, which works out to roughly 126 kDTU/s of heat on average, but the real thermal load during eruption is much higher because the dormancy period is included in that average. While active, individual vents can output between 233.33 g/s and 466.67 g/s, so cooling systems must be designed for peak output rather than the average alone.

A common way to manage the heat more efficiently is to build the vent room directly adjacent to a Steam Turbine input chamber, separated by a wall of Metal Tiles. Tempshift Plates on either side of the tiles can improve heat transfer further, letting the turbine help remove heat from the vent output before the gas is pumped onward.

Once captured, the Hydrogen can be used for power generation. Feeding the vent’s output into Hydrogen Generators provides a useful renewable energy source, especially if the gas is stored during dormant periods. A single Gas Reservoir can hold enough Hydrogen to store 8000 kJ of energy, with no power runoff, which makes it useful for buffering a vent-based power grid against the geyser’s idle cycles. In practice, this makes a Hydrogen Vent a strong supplement to an oxygen-production setup that already uses an Electrolyzer, since the hydrogen byproduct can be redirected into power instead of wasted.

• If the vent is part of an electrolyzer-based base power system, balance production and storage carefully so the generators do not stall during dormancy.
• Directly cooling the vent’s output with Aquatuners can be expensive in power, especially at the high end of the vent’s possible output range.
• A Hydrogen Vent is often most valuable when its heat and gas are both treated as resources: the heat can be funneled into a Steam Turbine, and the gas can be stored or burned for power.