A side-by-side assessment of a gas engine heat pump (GHP) and electric cold climate heat pump for heating/cooling compared to an existing conventional HVAC system has been completed at Naval Station Great Lakes.
Variable refrigerant flow (VRF) heat pump systems provide space conditioning for multi-zone commercial buildings. The demonstration included a measured field performance evaluation as well as enhancement of Energy Plus models for both gas and electric variable refrigerant flow (VRF) heat pump systems which provide space conditioning for multi-zone commercial buildings. Both VRF systems demonstrated improved comfort along with energy savings, reduced peak electric demand, and lower lifecycle costs compared to the baseline system.
Both VRF systems reduced primary energy use by about 57% and lowered full-fuel-cycle GHG emissions by over 50% compared to the baseline.
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