Closed-loop geothermal heat pump system definition
Closed-loop geothermal heat pump system means a water-to-air or water-to-water heat pump that utilizes underground tubing to circulate the water through the heat pump without introduction of new water or disposal of waste water, from the system. All systems that require pre-heating of water by natural gas, oil or electricity or the use of an evaporative cooling tower are excluded. “Direct cooling coils” means large finned coils through which cold well water is pumped; warm air passes across coil,