Commercial Ground-Source Heat Pump
Preliminary Technology Assessment
What is This Technology?
Ground source heat pumps (GSHP) rely on the fact that the Earth (beneath the surface) remains at a relatively constant temperature throughout the year. GSHP buries a series of pipes, commonly called a "loop," in the ground near the building to be conditioned. The GSHP circulates a fluid that absorbs heat from, or relinquishes heat to, the surrounding soil, depending on whether the ambient air is colder or warmer than the soil. Good GSHP designs also integrate a dedicated outdoor air system (DOAS) for ventilation control, where the direct-expansion (DX) coil can be very effective at humidity control.
Why is GSA Interested?
Measurement & Verification
The Green Proving Ground program has commissioned the Oak Ridge National Laboratory to perform measurement and verification (M&V) on Commercial Ground Source Heat Pump technology at the Mary Switzer Federal Building in Washington, D.C.
If you have questions or need additional information, contact the Green Proving Ground Program at GPG@gsa.gov.