Explain to the Econauts how their plans for the next biodome should be different. (i know you don’t know their last plan, i just need a new one.)

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)