20120318491 | GROUND LOOP BYPASS FOR GROUND SOURCE HEATING OR COOLING - A ground source heat transfer system circulates transfer fluid between heat exchange units and a ground loop. The system includes a bypass which allows the transfer fluid to continue to circulate past the exchange units while bypassing the ground loop. Monitoring the conditions of the system with temperature sensors allows the system to selectively activate the bypass whenever diverting fluid away from the ground loop can save heat or energy. | 12-20-2012 |