Approach temperature Cooling towers 1 Datacenter 1 Descriptive statistics 1 Dry cooling 1 Energy efficiency 1 Environmental impact 1 Evaporation 1 Evaporative cooling 1 Evaporative cooling systems 1 Free cooling 1 Hybrid systems 1 Resource efficiencies 1 Saving energy 1 Savings potential 1 Wet cooling 1 approach temperature 1 data center 1 descriptive statistics 1 dry cooling 1 energy efficiency 1 environmental impact 1 evaporative cooling 1 resource efficiency 1 thermal capacity 1 wet cooling 1