For the $Ca\frac{O}{C}a(OH{)}_2$ thermochemical storage system discussed in class, the operating temperature

of the thermochemical storage reactor is $400C$ during charging and $450C$ during discharging. The

water storage vessel will operate at $10C$ during discharging and at $90C$ during charging. Calculate

the energy that can be stored thermochemically in $100kg$ of CaO using these operating parameters.