The steam generator in a sodium-cooled reactor power plant receives sodium at the rate of 10 x 106 lbm/hr. the sodium temperatures are 600 and | 1000°f. 800°f steam is generated at 1,000 psia from feedwater at 340°f necessary reactor output in mw(t) assuming no heat losses, find the temperature difference at the pinch point in the generator. (ep for na = 0.3.)

Explanation:

It is known that pinch point temperature difference is defined as the difference between the temperature of exhaust existing the evaporator and the temperature of water evaporation.

      = Exhaust existing the evaporator temperature - Temperature of water evaporation

Since, it is given that exhaust existing the evaporator temperature =

           Temperature of water evaporation =

Hence, calculate using the above formula as follows.

                    = Exhaust existing the evaporator temperature - Temperature of water evaporation

                                  = -

                                  =

Thus, we can conclude that the temperature difference at the pinch point in the generator is .

a

explanation: