Heat transfer system utilizing dynamic fluid leveling

A heat transfer system comprising:

• a conduit through which a fluid may flow comprising an open first end and a second open end in fluid communication having a first and second thermal exchange segment disposed there-between, and wherein said open first end and said open second end are positioned and oriented to be generally level in a single horizontal plane;
• said first segment being disposed underground;
• said second segment being disposed above-ground;
• said open first end and open second end being located at a height above the other portions of conduit and arranged such that said first and second open ends are communicating vessels so a change in fluid level in said first end moves fluid within said conduit and changes fluid level in said second end;
• and
• a means for adding unpressurized fluid to one end displaces fluid toward the other end, thereby overcoming hydrostatic pressure in said system without a pump disposed along said conduit.