Typical prices and energy
capacities are presented in Table 1. In general, cooling water
has an energy price of $0.10/GJ, a cooling value of 1 cal/g, and
its normal inlet and outlet temperatures are 25 C and 50 C,
respectively. Electricity has a purchase price of $0.09/kWhr.
The natural gas price is $0.5/kg and has a heating value of
55.7 MJ/kg [35]. The utility costs for the three aforementioned
utility types were aggregated and represent the gross utility