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Oklahoma State University

Hybrid Ground Source Heat Pump Laboratory

This facility, which is currently under development, will be used to develop hybrid ground source control strategies and validate hybrid ground-source heap pump (HGSHP) models for simulation programs.  An HGSHP system consists of a ground-loop heat exchanger (GLHE) with a supplemental heat rejecter (e.g., cooling tower, fluid cooler, pond coil, etc.).  This system is advantageous for buildings where the cooling loads are larger than the heating loads.  The bore field can be sized based on the heating loads and supplemental heat rejecter would allow the system to meet the cooling loads.

The main advantage of this system is that it more closely balances the heat rejected and extracted over the course of a year.  Another added benefit is the possible decrease in first cost and operating cost compared to conventional ground source heat pump systems.