For the plant in Problem P7.33, 25,000 gal/s of water flow in the river adjacent to the

Question:

For the plant in Problem P7.33, 25,000 gal/s of water flow in the river adjacent to the power plant. The river is used as the source of cooling water for the condenser. Considering the heat transferred from the power plant to the river each second and the specific heat of water, by what amount does the temperature of the river rise as it passes the power plant? The density and specific heat of water are listed in Tables 6.1 and 7.4.

Table 6.1

Density, p Viscosity, u Fluid kg/m? slug/ft kg/(m - s) slug/(ft s) Air 1.20 2.33 x 10-3 1.8 x 10-5 3.8 x 10-7 Helium 0.182 3.53 x 10-4 1.9 x 10-5 4.1 x 10-7 Freshwater 1000 1.94 1.0 x 10-3 2.1 x 10-5 Seawater 1026 1.99 1.2 x 10-3 2.5