The Biggest Loser REDUCING HIGHER EDUCATION COSTS BY 50%

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1 The Biggest Loser REDUCING HIGHER EDUCATION COSTS BY 50%

2 Ian Hadden, PE, LEED AP BD+C, CEM Director, Energy Management Services University of Arkansas at Little Rock

3 AGENDA Who is UALR? Background Training Boot Camp Counting the Calories The First Weigh-In

4 Who is UALR? Metropolitan campus + Bowen Law + Benton Campus 2.9 million gross square feet 3 main campus Electric meters + 47 minor meters 4 main campus Gas Meters + 38 minor meters 5 LEED Certified Projects

5 Current Conditions

6 Background Training

7 RECENT HISTORY New Buildings CINS, Student Services, Trojan Grill Energy Projects ARRA: expanded district cooling, replaced chillers, lighting retrofit University Village

8 Daily Consumption (kwh) UALR Main Electric Meters , ,000 80,000 60,000 South Primary Meter East Primary Meter North Primary Meter 40,000 20, Average Daily Drybulb (Fo)

9 RATE ANALYSIS

10 Boot Camp

11 The Baseline Equation Form Baseline Regression Coefficients y = (M 1 (X 1 ) 2 + M 2 (X 2 ) 2 + M 3 X 1 + M 4 X 2 + B) * GFA Where: y = predicted utility use (per meter) M 1-4 = regression coefficients established during model calibration X 1 = average daily dewpoint temperature ( F) X 2 = average daily drybulb temperature ( F) B = constant established during model calibration (i.e., baseload) GFA = gross floor area of the buildings served by the meter (in 1000 SF)

12 2012 BASELINE COSTS Item Effective Dates Electricity ($) Natural Gas ($) Water ($) Total ($) Accumulated Total ($) Baseline Cost Jan 12 - Dec 12 3,440, , ,281 4,871,893 4,871,894 Additional Buildings (HH, SSC, Trojan Grill, CIBN) 482,169 54,309 12, ,631 5,420,525 RLF District Cooling and Lighting Retrofit Project Savings (219,835) 1,116 0 (218,719) 5,201,806 Admin South Renovation Savings (9,370) (389) 0 (9,759) 5,192,047 Weather Variances 48, ,000 53, ,800 5,433,847 Peak Electrical Demand: 10 MW (Main Campus) Electricity Consumption: 49,936,776 kwh Natural Gas Consumption: 131,327 MMBtu

13 BASELINE VALIDATION FY10 FY11 FY12 FY13 FY14 Weather Data Average Drybulb Average Dewpoint Predicted Cost Total Predicted Cost $5,439,440 $5,429,165 $5,433,530 $5,415,360 $5,422,801

14 COUNTING THE Calories

15 ENCON Calorie Count 10 MW campus generation station OIS Rider and other riders Retro-Cx (EBCx) BAS Upgrade BAS Integration Expanded district heating and cooling loops Installed heat pump chiller heaters Removed steam boilers 2012 Utility cost Baseline $5.4M Projected Utility Costs Post Project $2.8M

16 Heat Pump Chiller Heater Application General Simultaneous heating and cooling w/lots of operating hours Favorable Utility Costs High gas cost, low electric cost is ideal Variable hot water set point VSD allows for more efficient part load for applications where set point for reheat can be changed based on outside air temp Replacement of boilers with design around F Efficiency at least 6+ times higher than boilers

17 Heat Pump Benefits ECONOMIC ADVANTAGES 0.35 unit 150ºF (65.5ºC) 130ºF (54.4ºC) 1.35 unit Input Work Condenser Motor Compressor Expansion Valve Evaporator 1 unit 54ºF (12.2ºC) 44ºF (6.7ºC) Cooling COP = 1.00 / 0.35 = 2.9 Heating COP = 1.35 / 0.35 = 3.8 Combined COP = 2.35 / 0.35 = 6.7

18 Load Sizing and Control Heating Dominant (Cooling Control) Cooling Dominant (Heating Control) HP Design Capacity Supplemental Heating Supplemental Cooling Heat Pump Operation Cold Outdoor Ambient Temperature Hot

19 Damaged Valves

20 Generator

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23 The First Weigh-In

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25 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun (MMBtu) Campus Gas Consumption 20,000 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 FY 2015 FY 2014 FY 2013

26 Campus Gas Cost (FY15 vs 14) $300,000 $250,000 $200,000 $150,000 $100,000 $50,000 $0 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr FY 2015 FY 2014

27 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun (MMBtu) 20,000 Campus Gas Consumption 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 FY 2016 FY 2015 FY 2014

28 Campus Gas Cost (FY16 YTD) $180,000 $160,000 $140,000 $120,000 $100,000 $80,000 $60,000 $40,000 $20,000 $0 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr FY 2016 FY 2015

29 Current Weather Data OVERVIEW OF Measurement & Verification Process Baseline Regression Equations Baseline Rate Models Baseline Cost Floor Area Utility Bills Utility Use Affected Only By Rates BAS System - Cost Savings Actual Utility Data Actual Rate Models Actual Cost BAS System

30 District Cooling and Heating

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33 Commissioning

34 PROJECT TEAM General Mechanical Contractors

35 A FINAL QUESTION How many decisions DID YOU MAKE YESTERDAY THAT reinforced the status quo?

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37 Ian Hadden, PE, LEED AP BD+C, CEM Director, Energy Management Services University of Arkansas at Little Rock