Precise and efficient cooling system control

A cooling system for extracting heat from within a data center and expelling the heat outside the data center, the system comprising:

• a first loop disposed at least partially within the data center, the first loop comprising:
• an evaporator configured to transfer heat from within the data center to a first cooling fluid;
• and
• a first prime mover configured to circulate the first cooling fluid within the first loop;
• a first heat exchanger configured to transfer heat from the first cooling fluid to a second cooling fluid;
• and
• a second loop disposed at least partially outside the data center, the second loop comprising:
• a condenser configured to transfer heat from the second cooling fluid to an environment outside the data center;
• wherein the condenser is mounted at a higher elevation than the first heat exchanger, and the second loop is configurable as a thermosiphon.