Heat transfer systems for critical power applications

A system comprising:

• a turbine configured to exhaust an air stream;
• a first coil configured to transfer thermal energy to the air stream when the air stream passes by or through the first coil, wherein the first coil is downstream of the turbine;
• a second coil configured to transfer thermal energy to the air stream when the air stream passes by or through the second coil, wherein the second coil is downstream of the first coil;
• and
• a third coil configured to transfer thermal energy to the air stream when the air stream passes by or through the third coil, wherein the third coil is downstream of the second coil,
• wherein the air stream is configured to cool one or more electronic components of a data center that is downstream of the third coil, and
• wherein the first coil is part of a first fluid loop that includes a close coupled cooling (CCC) coil associated with the data center.