Enterprise Building Control System: What Now? November 7, 2017

Transcription

1 Leadership, Energy, and Execution 1 Enterprise Building Control System: What Now? November 7, 2017 Bill Chvala Emily Wendel Todd Wall PNNL AR Support Team

2 Learning Objectives What does ARIMD plan to do with EBCS Phase II? How will the ARIMD use EBCS to reduce the number of on-site visits? What tools will be available in EBCS?*Bill may not be okay with that What strategies will be utilized with this tool? Leadership, Energy, and Execution 2

3 Agenda EBCS Pilot Update Bill Chvala (30 mins) Pilot Status Report EBCS Summit at Arden Hills Cloud Integration Leveraging EBCS Diagnostics Building Health Report Remote CEWWEs Emily Wendel (20 mins) EBCS Future Plans Todd Wall (15 mins) Phase II Leadership, Energy, and Execution 3

4 Current Status of EBCS in the Army Reserve Opportunity: Army Reserve buildings are ideal candidates for enterprise building control systems (EBCS): Leadership, Energy, and Execution 4

5 Optimizing Energy Use: EBCS Pilot OCAR conducted a pilot evaluation of a Reserve-Wide Enterprise Building Control System (EBCS) in FY o 39 of 45 buildings received Integration controllers allowing them to reside on the ARnet including: o 3 regions o 15 states o 8 different control vendors o Building level user interface designs developed, dashboards still under development. o Lessons learned during the pilot phase will inform full implementation in years 2-4. Enterprise Building Control System (EBCS) 63 rd RSC Pilot: 6 sites / 15 Bldgs FY2016 EBCS Pilot Integration Ready Buildings (future) 88 th RSC Pilot: 3 sites / 6 Bldgs 99 th RSC Pilot: 24 Bldgs 81 st RSC Pilot: 2 Bldgs (proposed) Leadership, Energy, and Execution 5

6 EBCS Working Group Meeting Update from October at Arden Hills, MN: Update on the status of connected 39 buildings. PNNL and the integration contractor have reached an agreement on payment for the pilot as of 10/2/2017. PNNL has a long punch-list of items that need to be fixed to complete the pilot phase. Estimated completion of punch list items (30 JAN 2018) Functional testing by users will be key PNNL will be available for on-going fixes as needed for as long as necessary. Leadership, Energy, and Execution 6

7 EBCS Working Group Meeting Update from October (cont.): Building level user interfaces were revised and approved by the Working Group (see screen capture) Dashboard and analytic tool development is still evolving: The pending decision on migration to Microsoft Azure Cloud (more on this later) will impact this work significantly. If we stay on the G6 server, we may add Niagara Analytic Tools (formerly DataEye) which can reside within the Niagara engine on the server. Other smaller diagnostics from the DOE Controls Library will be made available to the EBCS team (more later). Leadership, Energy, and Execution 7

8 Current Status of Building Control Systems (BCS) The EBCS Pilot phase will be completed by the end of January so what now? Leadership, Energy, and Execution 8

9 Current Status of Building Control Systems (BCS) Benchmarking Building Health Monitor Alarms Dashboards Diagnostic Tools Prioritization of Optimization Opps. Remote CEWEs Scheduling Setpoints Deep Data Dive / Machine Learning Leadership, Energy, and Execution 9

10 Potential Plans: Microsoft Azure Army Reserve G6 has asked the EBCS WG to serve as a test case for moving applications to the cloud G6 is considering the possibility that much of the computing resources will move to Microsoft Azure cloud in the future. An initial meeting was held with representatives of Microsoft and Tridium 10/5/2017 in Redmond, WA All security updates, patches, software upgrades, AND G6 Networthiness Certifications will be handled by Microsoft! This is not a final decision and plans are still in flux. Leadership, Energy, and Execution 10

11 Microsoft Azure and DOD Infrastructure As A IaaS(IaaS) - Platform As a Service (PaaS). Leadership, Energy, and Execution 11

12 Tridium Partnering with Azure Army Reserve Buildings ARnet AR G6 Internet Access Point (IAP) Potential Future Access Current EBCS Path Potential Future Pathways (e.g., 9 th MSC) Leadership, Energy, and Execution 12

13 EBCS / Cloud Path Forward Outstanding items: G6 wants us to pilot the EBCS on Azure, but future plans to migrate to Cloud are not final. Niagara not yet full integrated into the Cloud, but can run now as a virtual machine in the Cloud. Pricing structure needs clarification Other analytics: One of the drivers for the move to Cloud is that Azure brings a whole suite of analytic tools which may be applied to EBCS data. We will stop development of our own dashboards and analytics until we better understand what Azure brings us. We also want to pilot a Deep Data Dive to study how machine learning may teach us about our buildings. Leadership, Energy, and Execution 13

14 Sample Dashboard in Azure This dashboard in Azure (for website hits) gives the impression of what is possible for the EBCS dashboard. Leadership, Energy, and Execution 14

15 EBCS Diagnostic Modules PNNL has access to a number of diagnostic tools developed in work for DOE and others. Some have been ported to Niagara environment, tested, and ready for deployment for anyone interested. Most of these are scripts that run in Niagara and extend the standard error checking looking for nonstandard conditions. Leadership, Energy, and Execution 15

16 Temperature ( F) Sample Diagnostic Module Chilled / Hot Water Loop Delta-T (ΔT): fault is detected when the ΔT within a loop is lower than the normal operating range. Default ΔT = 7.5 F (cooling), 20 F (heating). Example (Graph): The module would have notified the user of low HW Loop ΔT. Investigation would have shown the system was not performing optimally. After re-tuning, the HW Loop ΔT is much larger. 250 HWST HWRT Before Re-tuning After Re-tuning 0 3/22 3/23 3/24 3/25 3/26 3/27 Time Leadership, Energy, and Execution 16

17 Additional Diagnostic Modules Temperature Sensor Failure: fault is detected when the temperature output has wildly deviated from its intended value. Deviation is determined by monitoring and calculating the average temperature over an extended period of time. Overridden Control Setpoints: fault is detected when points remain in override-mode VAV Box Cooling / Heating Failure: fault is detected when the VAV box s discharge air temperature is above / below set parameters when the box is in cooling / heating mode. Deviation is determined by monitoring and calculating the average temperature over an extended period of time. The threshold parameters are dependent on the box s cooling/heating mode status and AHU discharge air temperature. PNNL will add to this list as more are ported and tested. We are open to more ideas! Leadership, Energy, and Execution 17

18 Alarm Identification Typical alarms: System. Loss of communication between JACE and Niagara server High. Failure of major pieces of equipment (e.g., boilers, chillers, etc.) Medium. Sub-system failures or issues (e.g., VAV box issues) Low. Minor system failures or sensor failures (e.g., exhaust fan, outdoor air sensor). The ability of the EBCS to generate alarms isn t an issue it s what to do with all those alarms! The EBCS must provide built-in tools to help the user understand which alarms are the most critical and should be addressed first. Leadership, Energy, and Execution 18

19 Alarm Identification Leadership, Energy, and Execution 19

20 Alarm Identification Conditional Based Alarming Filter critical alarms vs. nuisance Deliver alarms based on roles (e.g., EM, FOS) Variety of delivery methods: Instant notification ( /text) Noted on dashboards and Building Health Monitor report Some alarms stay in the background Need the ability to silence (but not delete) known alarms. We are working on integrating alarm processing into dashboards and reports. Leadership, Energy, and Execution 20

21 Building Health Report The (proposed) Building Health Report is a Building-level dashboard that provides at-a-glance information on the current health of the building. Alarms Energy/water use vs. expected/previous year Suggested actions with priority within bldg List of all over-ridden settings Equipment that ran more than expected Send RSCs status reports directly w/o logging in, when requested The PNNL Building Operation Control Center (BOCC) is a source of available tools we can deploy. ( Leadership, Energy, and Execution 21

22 Building Health Monitor Report Leadership, Energy, and Execution 22

23 Building Health Monitor Report Other possible tools for Building Health Monitor Report Scheduled operations versus actual: Note: Heat pump #8 on building 350 was scheduled to run 60 hours in a given week but actually ran 166 hours. Where there all-night experiments or was a setback over-ridden or occupancy sensor broken? Leadership, Energy, and Execution 23

24 Controls Optimization Opportunity Identification EBCS analytics automatically will evaluate connected systems Actions ranked based on potential energy savings, equipment wear and tear, and occupant comfort Initially send RSCs lists of opportunities (Monthly) Eventually incorporate actions into Building Health Monitor Reports RSCs have opportunity to quiet actions that don t apply or affect mission Leadership, Energy, and Execution 24

25 Leveraging EBCS for Remote Assessments Emily Wendel, PNNL Leadership, Energy, and Execution 25

26 Facility Assessment Policy Driver Energy Independence and Security Act (EISA) of 2007 Section 432 and the Army Comprehensive Energy and Water Evaluations Policy (23 Aug 2012) requires the Commands to: 1. Evaluate 75% of installation s energy and water every 4 years 2. Conduct comprehensive energy and water evaluations that must include: Energy and water retrofit measures Re- or retro-commissioning measures The Army Reserve Comprehensive Energy Water and Waste Evaluations (CEWWEs) are utilizing the EBCS to conduct remote assessments. Leadership, Energy, and Execution 26

27 5 Types of Assessments Net Zero CEWWE Controls Focused CEWWE Standard CEWWE Remote Controls Assessment Desk Eval. Leadership, Energy, and Execution 27

28 Step 1: Determine Best Assessment Type A. On Site: When remote access is not available and/or there is a large opportunity for retrofit projects. B. Remote 1. Desk Evaluation: Generally for sites that have had a boots on the ground assessment 4+ years ago. Includes a review of past projects and look at new opportunities based on available data. 2. Controls Focused Evaluation: For sites with ARNET or EBCS controls connection. Will include the items looked at for Desk Evaluations, but a review of the control system remotely will also occur. Leadership, Energy, and Execution 28

29 On-Site Controls Focused CEWWE Walk down site, access BCS, gather trends Perform functional tests and verify system is commissioned properly Identify re-tuning measures and discuss with site/region POC Implement measures and monitor operations (2 days) Measure energy impact and report any additional opportunities (full ECM list) Leadership, Energy, and Execution 29

30 List of Typical Optimization Measures Schedules and zone temperature setpoints/setbacks Discharge air temperature resets Duct static pressure resets Minimum outdoor air operations Economizing Heating & cooling enable/disable Hot and Chilled water temperature resets Hot and Chilled water loop differential pressure resets Re-tuning Home Page: Re-tuning Online Training Courses: Leadership, Energy, and Execution 30

31 5 Types of Assessments Net Zero CEWWE Controls Focused CEWWE Standard CEWWE Remote Controls Assessment Desk Eval. Leadership, Energy, and Execution 31

32 Remote Desk Evaluation Collect remote data Interview Site/Region for EWCM implementation status Identify previously recommended and new EWCM opportunities Report EWCM opportunities and potential savings Leadership, Energy, and Execution 32

33 Remote Controls Focused Evaluation Access BCS and Gather Trends Identify Optimization Measures Discuss Measures with site/region POC Track measure implementation Measure energy impact and report any additional opportunities Leadership, Energy, and Execution 33

34 Trend Logs and M&V Typical trends gathered during baseline and post re-tuning : Whole Building Electric and/or Natural Gas OAT, Relative Humidity AHU, chillers, boilers, fans, pumps VAV boxes Zone temperatures with setpoints and setbacks Differential Pressures Suggested Measure & Verification (M&V) Collect a minimum of 30 days of baseline period Collect a minimum of days of post re-tuning Communicate with POCs to track any HVAC issues or major changes to operations to quantify any outliers with trend logs and data. Leadership, Energy, and Execution 34

35 3 Examples of BCS Re-tuning Implementation Annual Cost Percent Reduction Savings Elec Gas $/yr DE007 Newark March % 52% $30,000 MA058 Ayer May % 20% $5,300 CA062 Sacramento August % TBD TBD Leadership, Energy, and Execution 35

36 CCF On-Site Re-Tuning: DE007 March 2015 Shortened occupancy and implemented optimal start Static pressure resets and airflow reset Chilled water and hot water temperature resets and differential pressure resets Boiler OAT lockout Adjusted VAV airflow and CO2 setpoints 3,000 DE007 Training Center Natural Gas 2,500 2,000 1,500 1,000 FY14 FY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEPT Leadership, Energy, and Execution 36

37 EUI (KbTU/sf) On-Site Re-tuning: MA058 May 2015 Oct-14 Nov-14 Dec-14 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Implemented occupancy schedule with optimal start/stop Further investigation is needed to determine why the electric load is continuing to operate despite schedule implementations. Remote access could investigate and monitor these issues. Rolling Electric EUI for MA058 Training Center Leadership, Energy, and Execution 37

38 kwh/day Remote Re-Tuning: CA062 August 2017 Baseline: Occupied Schedule from Sunday-Saturday hrs Re-tuning TM : Occupied Schedule from Monday-Friday hrs CA062 BT Collins Bldg 661 Daily Energy Usage - Electric Pre and Post Re-tuning Sunday Monday Tuesday Wednesday Thursday Friday Saturday Pre Post Leadership, Energy, and Execution 38

39 Qualitative Benefit: Mechanical malfunction identification Remote functional tests can identify mechanical issues within the HVAC system Faulty sensors, broken/inverse dampers, equipment left in HAND mode, etc Example (CA062): The supply fan for an AHU was suddenly not responding to a schedule change or an override command. The facility POC was contacted to investigate the equipment and discovered the belt for the supply fan was broken. Due to the discovery and quick recovery from the POC, the building was only without cooling (during the summer) for 1-2 business days. Leadership, Energy, and Execution 39

40 O&M benefits and occupant comfort Re-tuning Measure Qualitative O&M Benefits Occupant Comfort Improvements Schedules (optimum start/stop, zone temperature setbacks, unoccupied zone temperature setbacks, heating and cooling enable/disable) Duct static pressure reset Reduced equipment runtime will extend equipment lifetime and reduce O&M Reduced demand on supply and return fans will result in extended motor life and fewer fan belt changes Allows for mechanical systems to be enabled during the unoccupied hours to reduce indoor environment recovery times upon system start-up; reduction in simultaneous heating and cooling leads to a more consistent indoor environment Lower duct noise will lead to increased occupant comfort and productivity Supply air temperature reset Reduced demand on boiler/chillers and terminal reheat systems will extend equipment lifetime and reduce O&M The indoor air supply will be discharged at a more comfortable temperature for the occupants Differential pressure reset Reduced demand on circulation pumps and wear on valve seats will reduce O&M and extend equipment lifetime, and reduced system pressure will decrease inadvertent heating/cooling through overpressurized valves Maintain existing occupant comfort level Chilled water / hot water temperature reset Reduced equipment runtime will extend equipment lifetime and reduce O&M Maintain existing occupant comfort level Leadership, Energy, and Execution 40

41 Phase 2 Update Todd Wall Leadership, Energy, and Execution 41

42 EBCS Phase 2 - Structure Phase 2 Structure and Partners 1. ARIMD will contract with DOJ, who provide general project management and oversight. 2. DOJ will contract with GEM, who will provide the means to complete the work, likely through regional subcontractors. 3. Microsoft will build graphics and develop diagnostics within Azure architecture. Contracting Map Field Work and Graphics DOJ GEM ARIMD (Prime) Dashboard & Server Microsoft (Azure) Advisory, Coordination, and/or Oversight Roles 1. PNNL will provide technical advice and draft procurement/pm documents. 2. G6 will have IT/network oversight. 3. Working group will provide feedback and guidance. Regional Subcontractors Leadership, Energy, and Execution 42

43 EBCS Phase 2 - Status 1. Present funding level supports approximately 95 buildings. 2. Phase 2 buildings are expected to be integration ready and enduring. 3. Additional integration ready buildings will be completed in a later phase as well as older buildings that require HVAC and controls upgrades. 4. Field work should commence after an initial procurement period of approximately 45 days. 47 Phase 2: 95 Buildings PNNL recently presented a demonstration of the Pilot system to the EBCS working group at Arden Hills and was approved to move into Phase 2. Leadership, Energy, and Execution 43

44 Questions? Leadership, Energy, and Execution 44