3. A 500-ton chiller is rated at 0.5 kW/ton at full output. 3a - What is its peak demand? 3b - What is its EER? 3c-What is its COP? 3d - If the building manager decided to install a chiller powered by Con Ed steam, how much would the building save in demand charges each year if the chiller ran from May 1 through October 31 and the cost per kW was $35.50 in the four summer months (June-Sept.) and $25.75 the rest of the year?