Solve the following questions: 1. Name 5 ways of Energy Storage and explain Energy Storage is important? 2. Name 10 ways of Food storage (Preservatives)? 3. For a CAES plant, the air is stored in an underground cavern. It obeys the adiabatic process. If the temperature of the air in the cavern at 1atm is 20C. Calculate raise in temperature if we increase the pressure to 100atm. The volume of the tank is fixed. 4. Given a rotor mass of 5kg, a diameter of 0.5m, and spinning at 10,000rpm, what is the amount of energy stored? 5. In a hydropower plant, the flow rate of the water through a penstock is 500m3/sec with an effective head of 100m. How much power is generated if the turbine generator efficiency is 75% ? 6. In solar-heated buildings, energy is often stored as sensible heat in rocks, concrete, or water during the day for use at night. To minimize the storage space, it is desirable to use a material that can store a large amount of heat while experiencing a small temperature change. A large amount of heat can be stored essentially at constant temperature during a phase change process, and thus materials that change phase at about room temperature are very suitable for this purpose. Determine how much heat (kJ) can be stored in a 5m3 storage space using water with a heat capacity of 4.00kJ/kgC and a temperature change of 20C. What would be the stored heat if the storage volume has tripled. Sensible-heat storage materials are known for low energy density. How does this affectthe design of thermal energy storage system