From a geothermal underground source saturated water vapor is extracted with
a temperature of 200°C.
- What is the maximum thermal efficiency (= ratio of benefits to costs)
of a cyclic heat engine which uses the water vapor as heat source
and expells its "waste" heat to a 20 oC cold reservoir ?
- How much steam per second do we need at this efficiency for a 1 MW
power plant if we extract 1930 kJ of heat from each
kilogram of water vapor to feed into the cyclic heat engine?