# If the LMFBR in the previous exercise (Exercise 15.7) can produce electrical power at a cost of 6…

If the LMFBR in the previous exercise (Exercise 15.7) can

produce electrical power at a cost of 6 cents/kWh, and sell it to its retail

customers at an average price of 10 cents/kWh, how much prot (excluding taxes

and regulatory fees) does this LMFBR make in a 24-hour period?

Exercise 15.7

Suppose that the LMFBR in the previous exercise (Exercise

15.6) has an actual thermal efciency of 40%. What is the electrical power

output of this power plant, and if it is a loop-type LMFBR, how many different

cooling loops does it have?

Exercise 15,6’

The energy content (or the enthalpy) of liquid sodium

entering the core of an LMFBR at 395.0°C is 600 kJ/kg, and the energy content

(or enthalpy) of liquid sodium leaving the core of an LMFBR at 545.0°C is 790

kJ/kg. If the mass ow rate through the core is 15,700 kg/s, what is the

thermal power output of this LMFBR?