Aplant’s demand and power factor are 800 kw and 0.80 respectively for six months per year, and 700 kw and 0.85 respectively for the other six months per year. if demand costs $18 /kva-month, determine the quantity of capacitance to maximize savings without over-correcting for power factor, and the annual savings from adding this quantity of capacitance.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.