1. The problem statement, all variables and given/known data If we have a containment sprayed by a subcooled water to condense the steam, the pressure decreased from 5 bar to 4 bar, calculate the amount of sprayed water required as a minimum to decrease this pressure? Heat of vaporization 2550 kJ/Kg, steam at saturated condition, subcooling 70c and C=4kJ/kg-k which is constant over pressure and temperature. 2. Relevant equations 3. The attempt at a solution at 1 kg we have Q=2550kJ , Q=mC(T2-T1)------> m=2550kJ/((4kJ/kgk)x(100-70)K)=21.25 Kg!! do you agree with me?