AN EVALUATION OF THE EFFECTIVENESS OF PRE-COOLING IN A HYBRID GROUND SOURCE HEAT PUMP
A. J. Pertzborn, G. F. Nellis, S. A. Klein
Hybrid ground source heat pump (HyGSHP) systems for building heating and cooling are gaining popularity as a means of decreasing long term energy and maintenance costs while maintaining manageable first costs. In these systems there is a potential to use the ground not only as an immediate heat source or sink, but as an energy store. On a scale of hours, the ground store could be cooled by a hybrid component, such as a cooling tower, during the night in order to improve the heat rejection efficiency in cooling during the following day. This paper presents the results of a study of the ground as a thermal energy store on a short term basis.
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