A Wireless Platform for Energy Efficient Building Control Retrofits
Final rept. 1 Oct 2009-15 Dec 2011
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT
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An advanced energy management and control system in an existing building in the Construction and Engineering Research Laboratory CERL for Army at Urbana-Champaign IL was demonstrated. The medium-size office building underwent a retrofit of the HVAC system and controls employing a technology called optimal Model Predictive Control MPC which offers significant potential for saving energy by providing a means to dynamically optimize various sub-systems to take advantage of building utilization and weather patterns, and utility rate structures. A multi-variable optimization problem to minimize energy consumption and cost while guaranteeing zonal comfort over a 3 hour predictive horizon was formulated and solved periodically on line. The algorithms were integrated with the building automation system and evaluated experimentally at the demonstration site. A 45-50 reduction in HVAC system energy use was demonstrated while improving occupant comfort. A 10-15 installation cost reduction was accomplished due to the use of a robust wireless sensor network versus a fully wired network.
- Administration and Management
- Electric Power Production and Distribution