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Coolant is a Gas in a pipe network that is being used as a medium for transferring heat.

Water (specifically, steam) is the most effective coolant, however it is harder to find, making the more abundant Pollutant a more preferable coolant.

Name	Molar Heat Capacity
Carbon Dioxide (CO2)	28.2
Pollutant (X)	24.8
Water (H2O)	72

Coolant is used in the following items:

• Atmospherics
• Wall Cooler