Assertion: heat pump's system | /r/Desires | two loops
Facets:
value: on the ground side
type: LOCATION
Source sentences:
text: By contrast, water-based geothermal systems rely on two loops on the ground side: a primary refrigerant loop, contained in the appliance cabinet where it exchanges heat with a secondary ground loop that is buried underground and is made of high-density polyethylene containing a mixture of water and anti-freeze (propylene glycol, denatured alcohol or methanol).