FEMP M&V Methods: No Silver Bullet Tinker AFB and Humphreys Engineer Center

Transcription

1 Track 12, Session 3 FEMP M&V Methods: No Silver Bullet Tinker AFB and Humphreys Engineer Center Dusty Wheeler & Jeff Stringfield Honeywell August 15, 2017 Tampa Convention Center Tampa, Florida

2 Agenda Discuss the range of M&V Options What are the applications Strengths and weaknesses Discuss two Combined Approach Case Studies USACE Humphreys Engineering Center Option D-A/B Tinker AFB Option C-A Discuss techniques needed to ensure accuracy Identifying the performance of existing systems Identifying variables that impact on-going performance 2

3 M&V Options: What choice is best? No Single Right Answer Each option provide benefit in correct application Best Choice grows from Engineering knowledge Option applications Project specific goals Complexity of ECMs Synergy between ECMs Ideal choice may be to combine options 3

4 Retrofit Isolation (Options A&B) Focus analysis around the affected system Strengths Direct measurement of system performance Greatly reduces variables affecting performance Provides rapid feedback of performance degradation Provides value beyond M&V requirement Predictive Maintenance / OCx Often less costly to maintain Weaknesses Requires extrapolation to whole building meter affect Difficult to directly correlate to utility bills (at times) Relies on validity and comprehensiveness of measurements Relies on validity and comprehensiveness of calculations 4

5 Whole Facility Methods(Options C and D) Focus analysis around entire building Strengths Captures synergy between multiple ECMs Tinker has 20 ECMs across 60 buildings Direct result in whole building meter quantity Provides continuous monitoring of whole building performance Weaknesses Inability to identify source of performance variations Difficulty in identifying and tracking all variables affecting performance Limited benefit beyond M&V 5

6 Humphreys Eng Ctr: Cude / Cude Annex Mission: US Army Geospatial Center Providing geospatial information to the war fighter Understand critical operating parameters Cude: Combination of standard office, server rooms, and SCIF space Cude Annex: Entirely SCIF Distributed server rooms and computer labs Known issues Misalignment of original HVAC design to current use Extreme comfort issues Reliability of chilled water system Age of pri/sec HVAC systems and controls Data center consolidation 6

7 Humphreys Eng Ctr: Cude / Cude Annex Require major renovation of major systems Apply ASHRAE EBCx Process Install new condensing boiler (CUDE only) Implement chilled water Optimization upgrades Complete BAS Upgrade HVAC Renovation (Cude only) Required extensive baseline performance measurement Detailed system functional testing; Datalogging of performance over time Required detailed modeling of all HVAC systems Whole building calibrated hourly energy simulation Create disaggregated energy balance of baseline Evaluate design options Identify Synergism between options 7

8 HEC Option D-A/B M&V Approach 1.1 Install Condensing Boilers 2.1 Chiller Plant Upgrades ECM Method Baseline Post-Install Performance Period D/A D/B 3.2 BAS Upgrades D/A 4.1 HVAC Retrofits D/A Building Energy Model (BEM) calibrated to metered gas data Measured chiller plant performance BEM calibrated to measured performance BEM calibrated to measured HVAC equipment performance BEM calibrated to measured HVAC equipment performance FPT of equipment performance Measure combustion efficiency FPT Measure plant efficiency FPT of operating sequences FPT of operating sequences Monitor Key parameters against EFD Measure plant electrical usage against baseline performance Monitor Key parameters against EFD Monitor Key parameters against EFD 8

9 Existing Conditions Testing Cude Chiller Plant Reading CH-1 CH-2 Chilled Water Supply Temp sp ( F) Chilled Water Supply Temp ( F) Common CHW Supply Temp ( F) 45 Chilled Water Flow (gal/min) 863 Condenser sp Water Supply Temp ( F) Condenser Water Supply Temp ( F) Condenser Water Flow (gal/min) 1045 Compressor Power Draw (kw) Cooling Load (tons) Chiller Efficiency (kw/ton) CHW Pump Power Draw (kw) 19.9 CW Pump Power Draw (kw) Cooling Tower Fan Power Draw (kw) 7.2 off Total Cooling Load (tons) 192 Plant Efficiency (kw/ton) 1.1 9

10 Existing Conditions Datalogging Cude Chiller Plant 4 Total Plant EIR as f(load) Chiller Plant EIR (kw/ton) Cooling Load (tons) 10

11 Existing Conditions Datalogging Cude Space Temperatures Space Temperature (of) / /20 6/25 6/30 7/5 7/10 7/15 7/ OpOff NW OpOff NW (Cube) OpOff SE C A OpOff NE /25

12 Existing Conditions Testing Diurnal Boiler Load Boiler Load (MBH) Hour 12

13 Existing Conditions Testing Cude Annex AHUs Diurnal Return Temperature AHU-1 Diurnal Return Temperature AHU Return Air Temperature(oF) Hour Return Air Temperature(oF) Hour 13

14 Measurement & Verification (M&V) Baseline Development - Calibrated Building Energy Model 1. Developed and Reviewed Existing Conditions Report 2. Extensive use of measured data to define baseline performance 3. Lighting Surveys and data logging 4. Natural Gas Utility Data 5. Data from all sources used to calibrate the BEM 6. Identified Key Parameters affecting baseline usage 14

15 Energy Modeling Actual vs DOE-2 Predicted Natural Gas ENERGY (Therms) equest Model Gas meter and datalogging form calibrated baseline ECM Functional Descriptions established ECM parametric runs Used as the basis for scope refinement Key parameter sensitivity analysis Quantify projected energy savings Therms/Month Month Cude AHU-A Supply Air T

16 M&V Instrumentation to be Installed 1. Full DDC BAS for trending of all sequences of operation 2. BTU meters for HW and CHW 3. kw meters for chillers 4. kw meters through VFDs on all pumps and fans 5. Space temperature sensors for all zones 6. CO 2 sensors for both Cude/Cude Annex 7. Air flow measuring stations for Cude/Cude Annex Ensures continuous tracking of system performance and energy savings 16

17 Post Installation M&V Activities Detailed FPT for all ECMs Make adjustments to BEM for As-Built conditions Update energy and cost savings Continuous monitoring of Key Parameters Notify USACE of any operating changes affecting performance Annual M&V report with recommendations for enhanced performance 17

18 Tinker AFB Option C/A M&V Approach All ECMs were consolidated into one large central plant decentralizing project to simplify the M&V process Except for a few, individual buildings were not metered prior to the ESPC project No metered baseline data except in central steam plants (for natural gas, electricity, chemicals, operations and maintenance) Option C was selected for the first 3 years using the central plant usage as the baseline and new gas and electric meters usage as the post-ecm usage During the performance period, Honeywell performs the maintenance and tests the equipment performance per spec 18

19 Tinker M&V Options ECM Number Utility Pre-Installation M&V Option Used* Post-Installation M&V Option Used* (3 years) Ongoing M&V Option Used* 1, 2, and 3 Natural Gas C C A 1, 2, and 3 Electricity C C A 1, 2, and 3 Water and Sewer A A A *Existing CSP gas meters minus sub-meters and/or building meters ± adjustments = savings. M&V options include A, B, C, and D of the M&V Guidelines: Measurement and Verification for Federal Energy Projects, Version2.2; and the current version of the International Performance Measurement and Verification Protocol (IPMVP). 19

20 Tinker Central Plant Project 20

21 Building Energy Model 21

22 Summary of equest Energy Models Modeled MMBtu Calibrated MMBtu kwh kw Facility Number Building Description Function Area SF Model Date Heating Mbh Baseline Post Savings Baseline Post Savings Baseline Post Savings Baseline Post Savings 10 WHSE SUP EQUIP DEP Warehouse 325,884 1/7/2010 6,538 3,734 2,069 1,665 4,906 3,241 1,665 1,993,318 1,950,268 43, WHSE SUP EQUIP DEP Warehouse 80,000 1/7/2010 1, , ,825 26, HAZARD STOR, DEP Storage 47,678 1/7/ , ,242 53, WHSE SUP EQUIP DEP Warehouse 326,024 1/7/2010 6,528 3,820 2,405 1,415 5,019 3,603 1,415 2,277,844 2,230,023 47, ` WHSE SUP EQUIP DEP Warehouse 121,403 2, BE STOR CV FCLTY Storage 115,683 2, FR STN Storage 15,980 4/26/ , ,811 1, , ,960 21, SHOP AND WAREHOUSE Warehouse 112,336 1/7/2010 3,009 4,308 1,075 3,233 5,659 2,426 3,233 1,852,051 1,526, , LOG FCLTY DEP OPS Admin 114,706 4/27/2010 2,928 6,073 2,966 3,107 7,977 4,871 3,107 3,765,887 2,673,341 1,092, DPI Admin 12,406 4/27/ , ,167 67, HTG FCLTY BLDG Production/Process 17, SHP TURBINE DEP Production/Process 11, SHP ENG TST&STOR/D Production/Process 118,168 4/27/2010 4, , ,864 53, FLY TNG CLASSROOM School/Training 31,452 1/7/ , , , , SHP A/SE STOR FCLT Storage 31,956 1/7/ ,057 2, ,702 2, , ,852 1, SHP SURV EQUIP Production/Process 26,827 1/7/ ,440 1,194 2,246 4,519 2,273 2, , , , HG MAINT Hangar 537,940 4/23/ ,807 1,362 1, ,789 2, ,007,058 4,014,263-7,205 1,076 1, SHP A/SE STOR FCLT Storage 4,350 1/7/ ,476 33,326 3, HG, MAINT DEP Hangar 187,255 4/23/2010 8,645 11,046 8,662 2,383 14,511 12,127 2,383 2,245,740 2,148,468 97, FIRE PUMP HOUSE Storage 1, HQ GROUP Hangar 8,427 5/4/ , ,565 14, PETROL OPS BLDG Hangar 3,962 1/7/ ,518 42,082 27, SQ OPS Admin 69,739 1/7/2010 2,466 2,826 1,245 1,581 3,712 2,131 1,581 1,179, , , TRML, AIR FRT Admin 151,383 1/7/2010 3,428 1, ,159 1, ,043, ,629 67, FLD TNG FCLTY School/Training 6,426 12/10/ ,314 47,783 2, TRML, AIR PSGR Hangar 7,520 12/10/ ,208 60,230 12, HQ WG Hangar 19,427 1/7/2010 1, , ,509 86, SQ OPS Admin 66,255 1/7/2010 2,619 1,310 1, ,721 1, ,221,282 1,197,773 23, FLT SIMLTR TNG School/Training 12,779 1/7/ , ,328 46, DPI Admin 40,505 1/7/2010 2,253 1, ,319 2, , , , , ACFT COR CON School/Training 38,527 1/7/ ,945 13,440-2,495 14,378 16,873-2, , , WHSE SUP&EQUIP BSE Warehouse 58,500 4/27/2010 1, , , ,356 33, WHSE SUP EQUIP DEP Warehouse 162,947 1/7/2010 3,289 2,947 1,730 1,217 3,871 2,654 1, , ,170 41, WHSE SUP EQUIP DEP Warehouse 422,856 1/7/2010 8,487 6,050 3,483 2,566 7,947 5,381 2,566 2,113,805 2,035,415 78, BANK Admin 10,000 1/7/ , ,824 87, BASE PERSONNEL OFC Admin 51,656 5/5/2009 1, , ,153 70, MAT PROCESS, DEP Production/Process 409,750 4/30/2010 8,240 2, ,751 2,852 1,100 1,751 3,572,925 2,941, , WHSE SUP EQUIP DEP Warehouse 367,507 5/5/2010 7,400 4,114 2,154 1,960 5,405 3,444 1,960 2,388,579 2,312,641 75, Total 77,469 52,064 25, ,769 76,365 25,405 36,120,269 32,225,567 3,894, ,678 Plant Fuel Consumption 33.7% Bldg Heating Req 22

23 Baseline Results Electric Energy 250,000 Pumps & Aux. 200,000 Vent. Fans Hot Water 150,000 HP Supp. kwh 100,000 Space Heat Refrigeration 50,000 Heat Reject. Space Cool - Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ext. Usage Misc. Equip. Area Lights Therms 45,000 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 - Steam Energy Hot Water Misc. Equip. Space Heat Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 23

24 Central Plant Summary Baseline Model Include in Baseline In/ Out Building Description Area SF Distribution Losses MMBtu/Yr Building Losses MMBtu/Yr Steam Service Hrs/Yr Pipe Total Heating DHW Process Plant Losses MMBtu/Yr Makeup (Leaks, Blowdown, Vents) Boiler Total Facility Number Year Built Unins. Pipe Total 2101 FALSE 0 SHP ACFT GEN PURP , ,340 11, FALSE 0 SHP, REFL VEH , , TRUE 1 ACFT COR CON 324, , , , TRUE 1 HG, MAINT DEP 147, , , FALSE 0 SHP ALTNR DRIVE/D , , FALSE 0 SHP ACFT & ENG DEP , , TRUE 1 HTG FCLTY BLDG 9, ,936 33, TRUE 1 ACFT COR CON 133, , , TRUE 1 SHP JET ENG I/MNT 2,734, , ,576 5, , Plant TRUE 1 HTG FCLTY BLDG 100, , , , , , TRUE 1 HG, MAINT DEP 181, , , TRUE 1 HG, MAINT DEP 66, , , FALSE 0 SHP ACFT & ENG DEP , ,901 5, TRUE 1 LAB, PME 30, ,838 1, TRUE 1 LAB, Q/C DEP 3, TRUE 1 INTEGR SPT FCLTY 136, , , TRUE 1 SHP JET ENG I/MNT 152, ,901 1,901 19, , , TRUE 1 ACFT COR CON 46, , , , TRUE 1 ACFT COR CON 54, ,000 1,000 65, , , TRUE 1 TST CELL 63, , , TRUE 1 SHP ENG TST&STOR/D 81, , , TRUE 1 SHP ACFT GEN PURP 424, , , TRUE 1 SHP, AVIONICS 85, , , TRUE 1 SHP, AVIONICS 70, , ,175 24

25 Central Plant Summary Post-ECM Model Steam from Plant? In/ Out Building Description Area SF Distribution Losses MMBtu/Yr Building Losses MMBtu/Yr Plant Losses MMBtu/Yr Makeup (Leaks, Heating DHW Process Unins Blowdown, Loads Loads Loads Pipe Total Vents) Boiler Total Steam Service Hrs/Yr Pipe Total Facility Number Year Built 2101 FALSE 0 SHP ACFT GEN PURP , ,340 11, FALSE 0 SHP, REFL VEH , , FALSE 0 ACFT COR CON , , , FALSE 0 HG, MAINT DEP , , FALSE 0 SHP ALTNR DRIVE/D , , FALSE 0 SHP ACFT & ENG DEP , , FALSE 0 HTG FCLTY BLDG TRUE 1 ACFT COR CON 133, , , TRUE 1 SHP JET ENG I/MNT 2,634, , , , Plant TRUE 1 HTG FCLTY BLDG 100, , , ,868 81,528 94, , TRUE 1 HG, MAINT DEP 181, , , TRUE 1 HG, MAINT DEP 66, , , FALSE 0 SHP ACFT & ENG DEP , ,901 5, TRUE 1 LAB, PME 30, ,838 1, TRUE 1 LAB, Q/C DEP 3, TRUE 1 INTEGR SPT FCLTY 136, , , TRUE 1 SHP JET ENG I/MNT 152, ,901 1,901 19, , , FALSE 0 ACFT COR CON , , , FALSE 0 ACFT COR CON , , , FALSE 0 TST CELL , , FALSE 0 SHP ENG TST&STOR/D , , FALSE 0 SHP ACFT GEN PURP , , FALSE 0 SHP, AVIONICS , , FALSE 0 SHP, AVIONICS

26 So What Does it All Mean? All options have strengths and weaknesses Right choice need to be determine based on application Combined approach may increase accuracy of result All options require detailed understanding of baseline performance All options require comprehensive Cx process after ECM installation 26

27 Contact Information Mark Dusty Wheeler: Jeff Stringfield: 27