DUC Energy Consumption Sarah Canniff, Brittany Huhmann, T. J. Pepping, Elliot Rosenthal, and Dan Zernickow EECE 449, Spring 2010

Project Objectives Find total energy use, CO 2 emissions, and cost for natural gas, electricity, hot water, and chilled water in the DUC for one year Identify the portion of the DUC’s total energy use that goes to individual components of the HVAC system and the portion that goes to non-HVAC uses Identify daily, weekly, and seasonal trends in the above parameters Begin to understand the influence of outdoor temperatures and student use of the DUC on these daily, weekly, and seasonal trends

Approach and Methodology Data from Metasys for 5:00 PM April 16, 2009 to 5:00 PM April 16, 2010 –electricity, natural gas, hot water, chilled water –supply fans, relief fans, and heat recovery fans for the 3 AHUs –pumps for hot and chilled water –outdoor air temperature All energy data converted to MMBTUs for comparative purposes Assumption: Zeros are real and included; “no data” was not included

Natural Gas

Electricity

Hot Water

Chilled Water

Four-Streams

Summary and Conclusions Annual energy use: 17,300 MMBTU Annual CO 2 emissions: 2,140,000 kg Annual Cost: $126,000 Electricity is biggest source of all three metrics HVAC electricity is 29% of total electricity consumption Energy reduction strategies should focus on non-HVAC electricity Two peaks in daily energy consumption corresponding to lunch and dinner rush Lower energy consumption on weekends vs. weekdays & during academic-year breaks Seasonal patterns based on outdoor temperatures

References