1. The problem statement, all variables and given/known data A glass manufacturer operates 11 months of the year and produces 97,000 tons of glass per year that needs to be cooled to ambient temperatures. The melting point of glass is 1673K and ambient temperature is assumed to be 293K. The specific heat capacity of glass is 0.837 kJ/kg.K. How much electricity is required to power a refrigeration system to remove the amount of heat given off by the molton glass? 2. Relevant equations Qdot=MdotCpΔT 3. The attempt at a solution Mdot = 97,000,000 kg / (335 days x 24 hours/day x 3600 seconds/hour) = 3.35 kg/s Qdot = 3.35kg/s x 0.837 kJ/kg.K x (1673K-293K) = 3,871 kW I know I have to do something with the COP but I'm completely stuck now. Any ideas guys?