Integrated Energy Master Plan Summary

Transcription

1 Integrated Energy Master Plan Summary January 8, 2013 Adapted from the original Board of Trustees presentation by Eric Utterson, PE, LEED AP Jerry Williams, PE, LEED AP 8760 Engineering, LLC St. Louis, MO

2 Overview Campus Master Plan (3/2010) Improve campus grounds, facilities, infrastructure and plan for growth Work toward becoming a carbon-neutral campus Integrated Energy Master Plan (2/2012) Identify a transformative plan to reduce energy and carbon emissions while maintaining sound economic justifications for these actions

3 Findings FY 2010/2011 Energy Costs Energy Source Energy Cost Electricity $18,677, % Coal $4,263,004 16,7% Natural Gas $2,542, % Fuel Oil $75, % TOTAL $25,558, %

4 Findings Results of Energy Audit for 104 Major Campus Buildings Energy Load Cost Building Lighting 23% Building Equipment 17% Building Fans 16% Heating 17% Cooling 18% Heating Losses 7% Building Losses 4%

5 Academic Office Student Life Science Residential CBECS Score Benchmarking of Buildings by Energy Use 100% 80% 60% 40% 20% 0% Note: EUI Score >50% = High Energy Consumption CBECS Energy Usage Index (EUI) Score. CBECS Avg

6 Central Heating Plant Boilers in place to fire coal, natural gas or fuel oil During FY 10/11, plant fired 92% coal, 8% natural gas Coal boilers 42 to 53 years old Replacement of coal boilers not economically viable EPA emissions regulations becoming ever more stringent FY 11/12, conversion to mostly natural gas

7 Indiana University Steam Distribution Serving 110 Buildings 19 miles of piping

8 Central Cooling Plant High efficiency electric chillers in linked, distributed plants Plants currently operated very efficiently Capacity increases necessary to meet existing loads and to support the master plan growth Aging building chillers around campus must be planned for replacement

9 Indiana University Chilled Water Distribution Serving 61 Buildings 14 miles of piping

10 Utility Distribution Electric and chilled water distribution systems in good condition Steam and condensate distribution systems failing 4.2 miles of buried piping require replacement Distribution losses represent $1.8M in annual energy consumption

11 Conclusions and Recommendations: 1. Energy Conservation through Involvement of Campus Community Encourage a culture of energy conservative behavior at every level of the campus community Continue to promote campus programs that reinforce these behaviors.

12 Conclusions and Recommendations: 2. Design More Efficiently Continue to require LEED Certification for all new buildings with enhanced annual energy tracking Supplement university design standards with energy system requirements for new buildings Continue to investigate renewable energy sources as the technology advances reduce costs

13 Conclusions and Recommendations: 3. Implement Energy Conservation Projects Make focused effort in Mechanical System Tuning Aggressively implement energy conservation facility improvements Install natural gas turbine cogeneration plant with heat recovery boiler

14 Conclusions and Recommendations: 4. Repair Campus Utility Systems Replace critical segments of the aging steam distribution piping system Reduce steam distribution pressure to 40 psig/set up building steam trap reviews Continue to provide building energy meters benchmark use as a diagnostic tool

15 Conclusions and Recommendations: 5. Prepare to Stop Burning Coal Coal firing will likely be retired within the next ten years Existing Boilers > 40 yrs old New Coal Boilers are Cost Prohibitive

16 Conclusions and Recommendations: 5. Prepare to Stop Burning Coal Until Coal is Retired: Retain all current available fuels for operating cost stability Analyze natural gas and coal costs monthly to minimize operating cost

17 Conclusions and Recommendations: 5. Prepare to Stop Burning Coal Heat with alternative technologies Move toward distributed hot water heating plants Replace aging boiler no. 5 with a new high efficiency unit for more robust natural gas fired plant operations

18 Recommended Integrated Energy Master Plan Initiatives IEMP Initiative Annual Cost Reduction* Estimated Project Cost 1 Mechanical System Tuning $ 910,000 $ 3,270,000 2 Energy Conservation $ 5,740,000 $ 44,920,000 3 Steam System Repairs $ 950,000 $ 10,600,000 4 Distributed Thermal Plant $ 480,000 $ 5,310,000 5 Cogeneration $ 1,480,000 $ 18,480,000 6 Take Advantage of Low Natural Gas Pricing $ 170,000 $ - Total $ 9,730,000 $ 82,580,000 * Based upon FY 2011 Energy Costs and Construction Costs