Question

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.)

Answer 1

Step-by-step 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.

`\Delta T_(p.p)` = Exhaust existing the evaporator temperature - Temperature of water evaporation

Since, it is given that exhaust existing the evaporator temperature =
`1000^(o)F`

Temperature of water evaporation =
`800^(o)F`

Hence, calculate
`\Delta T_(p.p)` using the above formula as follows.

`\Delta T_(p.p)` = Exhaust existing the evaporator temperature - Temperature of water evaporation

=
`1000^(o)F` -
`800^(o)F`

=
`200^(o)F`

Thus, we can conclude that the temperature difference at the pinch point in the generator is
`200^(o)F`.