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Description

This hot air engine extracts energy from the temperature difference between the hot springs and the cold water brought by channels and pipes. They have a lousy torque and power to weight, but once they start, they just keep going… as long as they are properly oiled.

They are built mostly from cheap materials and can extract power from geothermal zones before more sophisticated systems, like high pressure steam turbines can be built.

Description

This hot air engine extracts energy from the temperature difference between the hot springs and the cold water brought by channels and pipes. They have a lousy torque and power to weight, but once they start, they just keep going… as long as they are properly oiled.

They are built mostly from cheap materials and can extract power from geothermal zones before more sophisticated systems, like high pressure steam turbines can be built.