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Project Info COMPLETE Project Title

MULTI-VENDOR RTU RETROFIT CONTROLLER FIELD STUDY

Project Number ET12SDGE0003 Organization SDG&E End-use HVAC Sector Commercial, Public Project Year(s) 2012 - 2013
Description
Four different retrofit RTU controllers were tested on four 7.5 ton heat pumps serving office space at one building in San Diego. The operation of those units was alternated on a weekly basis from baseline to retrofit mode. Proper operation of the each controller was verified and the features of the controllers were compared to each other. Total heat pump electric power was measured at 1 minute intervals. The data was then re-sampled at hourly and daily intervals and was compared to various independent variables. Linear regression models were created to normalize for those independent variables and energy savings was calculated.
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The ETCC is funded in part by ratepayer dollars and the California IOU Emerging Technologies Program, the IOU Codes & Standards Planning & Coordination Subprograms, and the Demand Response Emerging Technologies (DRET) Collaborative programs under the auspices of the California Public Utilities Commission. The municipal portion of this program is funded and administered by Sacramento Municipal Utility District and Los Angeles Department of Water and Power.