Skip Navigation
Oklahoma State University

Surface Heat Rejecters

A sidewalk, two shallow ponds and a saturated "sand box", all with embedded tubing are being tested for application as supplemental heat rejecters for ground-source heat pump systems.  For some commercial buildings, the addition of a supplemental heat rejecter can decrease both the first cost and the operating cost compared to a standard ground-source heat pump system.  See Chiasson's thesis for more information.


Shallow pond heat rejecter.

Sidewalk heat rejecter.


All of the surface heat rejecters.

Control room.