A condenser-boiler section contains a 2-m x 2-m copper plate operating at a uniform temperature of T_s = 100°C and separating saturated steam, which is condensing, from a saturated liquid-X, which experiences nucleate pool boiling. A portion of the boiling curve for liquid-X is shown as follows.

Both saturated steam and saturated liquid-X are supplied to the system, while water condensate and vapor-X are removed by means not shown in the sketch. At a pressure of 1 bar, fluid-X has a saturation temperature and a latent heat of vaporization of T_sat = 80°C and h_fg = 700,000 J/kg, respectively.

(a) Estimate the rates of evaporation and condensation (kg/s) for the two fluids.

(b) Determine the saturation temperature Tsat and pressure p for the steam, assuming that film condensation occurs.

Vapor-X, 1 bar Saturated steam Tat P Saturated liquid-X Copper plate, T, = 100C %3! Liquid condensate- film -Insulating material 105 8. 6. 104 8. 103 8. 6. 10? 4 6 2 10 20 40 60 100 AT, (K) q7(W/m} 2.