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J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2E: Evaluating.

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Presentation on theme: "J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2E: Evaluating."— Presentation transcript:

1 J.B. Speed School of Engineering University of Louisville KEEPS Energy Management Toolkit Step 2: Assess Performance & Opportunities Toolkit 2E: Evaluating School HVAC Systems Kentucky Energy Efficiency Program for Schools KEEPS Energy Management Toolkit Step 2 Assess Performance & Opportunities Toolkit 2 E Evaluating School HVAC Systems

2 KPPC Kentuckys Resource Center for Environmental Sustainability KEEPS Energy Management Toolkit Toolkit 2E: Evaluating School HVAC Systems KEEPS Energy Management Toolkit Toolkit 2 E Evaluating School HVAC Systems 2

3 KPPC Kentuckys Resource Center for Environmental Sustainability 7-Step Energy Management Process 1.Make the Commitment 2.Assess Performance and Opportunities 3.Set Performance Goals 4.Create an Action Plan 5.Implement the Action Plan 6.Evaluate Progress 7.Recognize Achievements 3

4 KPPC Kentuckys Resource Center for Environmental Sustainability 4 Evaluating School HVAC Systems Overview Importance KEEPS Five-step HVAC Evaluation Process KEEPS On-site Energy Assessment Forms KEEPS Energy Assessment Tools KEEPS Assessment Report

5 KPPC Kentuckys Resource Center for Environmental Sustainability 5 Why evaluate a schools HVAC system? Gain knowledge and understanding of HVAC systems and how they impact energy use and performance Identify future upgrades or replacement for poor-performing equipment Make recommendations and present Energy Management Opportunities (EMOs) to district stakeholders

6 KPPC Kentuckys Resource Center for Environmental Sustainability 6 A typical K-12 school HVAC system consumes 58% of its energy usage

7 KPPC Kentuckys Resource Center for Environmental Sustainability 7 KEEPS HVAC Evaluation Process Step 1: Identify and Document Equipment and Controls Step 2: Conduct a Visual Inspection of all Systems Step 3: Review Operations and Maintenance Programs Step 4: Evaluate HVAC Controls Step 5: Identify Energy Management Opportunities (EMOs)

8 KPPC Kentuckys Resource Center for Environmental Sustainability 8 Recommended Tools Assortment of Screwdrivers Flat-head (slotted) and crossed (Phillips) Various sizes Flashlight Digital Camera Helpful and highly recommended

9 KPPC Kentuckys Resource Center for Environmental Sustainability 9 Step 1: Identify and Document Equipment and Controls Review all HVAC equipment Gather information on equipment including identification, ratings, fuel type and age Sources include: Facility staff and school personnel Rating plates Building drawings and specifications

10 KPPC Kentuckys Resource Center for Environmental Sustainability 10 KEEPS On-site Energy Assessment Form for HVAC Systems - Equipment

11 KPPC Kentuckys Resource Center for Environmental Sustainability 11 HVAC Systems Assessment Form 1

12 KPPC Kentuckys Resource Center for Environmental Sustainability 12 HVAC Systems Assessment Form 2

13 KPPC Kentuckys Resource Center for Environmental Sustainability 13 HVAC Systems Assessment Form 3

14 KPPC Kentuckys Resource Center for Environmental Sustainability 14 HVAC Systems Assessment Form 4

15 KPPC Kentuckys Resource Center for Environmental Sustainability 15 Step 2: Conduct a Visual Inspection of All Systems See first-hand the condition of the HVAC Equipment Get a general observation and feel for the condition of the HVAC Systems. Perform the Step 2 visual inspection during the Step 1 identification process.

16 KPPC Kentuckys Resource Center for Environmental Sustainability 16 Observe the Overall Appearance of the Equipment Motors and Belts (Noisy, Squeal) Dampers (Linkage Connected, Lubricated) Filters and Fans (Dirty) Bearings (Noisy) Duct Connections (Air Leakage) Condenser and Evaporator Coils (Dirty) Burners (Dirty) Insulation (Missing or Damaged) Piping and Valves (Leaking)

17 KPPC Kentuckys Resource Center for Environmental Sustainability 17 HVAC Systems Assessment Form 5

18 KPPC Kentuckys Resource Center for Environmental Sustainability 18 HVAC Systems Assessment Form 6

19 KPPC Kentuckys Resource Center for Environmental Sustainability 19 HVAC Systems Assessment Form 7

20 KPPC Kentuckys Resource Center for Environmental Sustainability 20 Step 3: Review Operations and Maintenance (O&M) Programs Verify if maintenance and repairs are performed on a regular basis Confirm what type of record-keeping is maintained Verify if any labeling is performed to facilitate O&M Verify if personnel are properly trained

21 KPPC Kentuckys Resource Center for Environmental Sustainability 21 Review Current O&M Programs Does a preventative maintenance program exist? Are any predictive maintenance activities performed? Are any informal records available pertaining to repairs and maintenance?

22 KPPC Kentuckys Resource Center for Environmental Sustainability 22 Are HVAC Systems and Components Labeled?

23 23 KPPC Kentuckys Resource Center for Environmental Sustainability O&M Training Are training needs being addressed? Is there any specialized equipment that requires staff training? Have other personnel received training (i.e. teachers trained on programming thermostats)? 23

24 KPPC Kentuckys Resource Center for Environmental Sustainability 24 KEEPS On-site Energy Assessment Form for HVAC Systems – O&M

25 KPPC Kentuckys Resource Center for Environmental Sustainability 25 O&M Form Section 1: Preventative Maintenance

26 KPPC Kentuckys Resource Center for Environmental Sustainability 26 O&M Form Section 2: Predictive Maintenance

27 KPPC Kentuckys Resource Center for Environmental Sustainability 27 O&M Form Sections 3 through 6: Record Keeping, Labeling, Training, Reactive vs. Proactive

28 28 KPPC Kentuckys Resource Center for Environmental Sustainability Step 4: Evaluate HVAC Controls Understand what degree of Building Automation System (BAS) controls are in place to reduce energy consumption Review current HVAC temperature adjustment settings and policies Review other HVAC controls that may be used to control energy consumption Determine commissioning needs 28

29 KPPC Kentuckys Resource Center for Environmental Sustainability 29 KEEPS On-site Energy Assessment Form for HVAC Systems - Controls

30 KPPC Kentuckys Resource Center for Environmental Sustainability 30 Controls Form Section 1: Building Automation System

31 KPPC Kentuckys Resource Center for Environmental Sustainability 31 Controls Form Section 2: Temperature Adjustments

32 KPPC Kentuckys Resource Center for Environmental Sustainability 32 Controls Form Sections 3 and 4: Miscellaneous Controls Items and Commissioning

33 KPPC Kentuckys Resource Center for Environmental Sustainability 33 Step 5: Identify Energy Management Opportunities (EMOs) Use information gathered from steps 1 through 4 to determine potential Energy Management Opportunities for HVAC systems and controls

34 KPPC Kentuckys Resource Center for Environmental Sustainability 34 HVAC Systems EMOs EMO 1: HVAC replacement, upgrade, modifications and/or additions EMO 2: O&M program enhancements EMO 3: HVAC controls installation and implementation EMO 4: Commissioning, retro- commissioning, re-commissioning

35 KPPC Kentuckys Resource Center for Environmental Sustainability 35 EMO 1: HVAC Considerations Replacement of the HVAC systems Upgrade or refurbishment of the systems

36 KPPC Kentuckys Resource Center for Environmental Sustainability 36 EMO 1: HVAC Replacement Considerations Age of Equipment. Is it more than 15 years old or greater than the median age on the ASHRAE Life Expectancy Table? Condition of Equipment. How good or bad did it look during the visual inspection? Efficiency Recommendations. Does the equipment meet ASHRAE Recommended Efficiency ratings?

37 KPPC Kentuckys Resource Center for Environmental Sustainability ASHRAE Life Expectancy Table Source: Limited Condition Survey and Usability/Reuse Study, page 34. University of Connecticut Greater Hartford Campus. September 10, 2003. 37

38 KPPC Kentuckys Resource Center for Environmental Sustainability ASHRAE HVAC Minimum Efficiency Ratings Review equipment efficiency with ASHRAE HVAC Minimum Efficiency Ratings for Zone 4 K-12 Schools Source: ASHRAE 30% Advance Energy Design Guide for K-12 School Buildings, page 938. American Society of Heating, Refrigerating and Air- Conditioning Engineers. September 2010. 38

39 KPPC Kentuckys Resource Center for Environmental Sustainability 39 ASHRAE Ratings: Water-source Heat Pump

40 KPPC Kentuckys Resource Center for Environmental Sustainability 40 EMO 1: HVAC Upgrade/Refurbishment Considerations Age of Equipment. Is it more than 8 years old, but less than 15? Condition of Equipment. How good or bad did it look during the visual inspection? Efficiency Recommendations. If there are no existing economizers, and heat recovery and installation looks physically possible, consider upgrading with economizers.

41 KPPC Kentuckys Resource Center for Environmental Sustainability Locate HVAC & Controls in the KEEPS Assessment Report and describe the schools existing HVAC system. List HVAC energy management opportunities and recommendations. KEEPS Report Input 41

42 KPPC Kentuckys Resource Center for Environmental Sustainability 42 EMO 2: O&M Program Enhancements Review the information recorded on the KEEPS On-site Energy Assessment Form for HVAC Systems - O&M. Use observations made during the visual inspection to assist in evaluating the effectiveness of current O&M programs. Provide recommendations based on the extent and effectiveness of O&M activities observed.

43 KPPC Kentuckys Resource Center for Environmental Sustainability 43 O&M Opportunities: Preventative Maintenance Recommend a preventative maintenance program if none exists. If not practical, then at a minimum, establish a system for tracking maintenance and repairs.

44 KPPC Kentuckys Resource Center for Environmental Sustainability 44 O&M Opportunities: Predictive Maintenance Evaluate benefits of a predictive maintenance program. Infrared analysis Oil analysis Ultrasonic analysis Vibration analysis

45 KPPC Kentuckys Resource Center for Environmental Sustainability 45 O&M Opportunities: Record Keeping

46 KPPC Kentuckys Resource Center for Environmental Sustainability 46 O&M Opportunities: Labeling Recommend the labeling of equipment, services, piping, valves and other equipment. Labeling is an inexpensive and effective method for helping personnel properly operate and maintain equipment.

47 KPPC Kentuckys Resource Center for Environmental Sustainability 47 O&M Opportunities: Training Operation and maintenance of existing equipment Specialized equipment Energy reduction policies and procedures (teachers and staff) Use of programmable thermostats (teachers and staff)

48 KPPC Kentuckys Resource Center for Environmental Sustainability 48 O&M Opportunities: Reactive vs. Proactive

49 KPPC Kentuckys Resource Center for Environmental Sustainability 49 Operations & Maintenance Benefits Energy savings Extension of equipment life Enhanced internal air quality Elimination of contaminant sources Increased occupant comfort Improved reliability Avoidance of classroom disruptions Maintenance staff empowerment

50 KPPC Kentuckys Resource Center for Environmental Sustainability Locate Operations and Maintenance (O&M) Program in the KEEPS Assessment Report and modify respective figures and other necessary words/sentences for your specific school. Describe O&M energy management opportunities and recommendations. KEEPS Report Input 50

51 KPPC Kentuckys Resource Center for Environmental Sustainability 51 EMO 3: HVAC Controls Installation and Implementation Review the information captured on KEEPS On-site Energy Assessment Form for HVAC Systems - Controls Provide recommendations based on the extent and effectiveness of HVAC controls activities observed

52 KPPC Kentuckys Resource Center for Environmental Sustainability 52 HVAC Controls: Energy Management System (EMS) Opportunities If a Energy Management System (EMS) exists, then maintain the system and verify that programming is updated. If using programmable thermostats, then upgrade to an EMS and verify proper thermostat programming. If timers are used, then upgrade to an EMS and verify that timers are set correctly. If using manual thermostats, then upgrade to programmable thermostats at a minimum. Consider potential for active outside air controls.

53 KPPC Kentuckys Resource Center for Environmental Sustainability 53 HVAC Controls: Temperature Adjustment Opportunities If heating and cooling is not adjusted automatically, then recommend a program for adjusting be put in place See KEEPS Energy Management Toolkit E1: Thermostat Setback Opportunities) Train personnel that control setbacks

54 KPPC Kentuckys Resource Center for Environmental Sustainability 54 HVAC Controls: Temperature Adjustment Opportunities (cont.) If complaints about the buildings comfort are non-existent or minimal, consider further modifications to temperature setbacks. Review the override capabilities for temperature adjustment and verify that if overrides exist, they are properly controlled.

55 KPPC Kentuckys Resource Center for Environmental Sustainability 55 HVAC Controls: Miscellaneous Opportunities Consider separate controls for zones. Recommend ventilation fans be shut down when not required. Adjust housekeeping schedule to minimize HVAC impact.

56 KPPC Kentuckys Resource Center for Environmental Sustainability Locate HVAC & Controls in the KEEPS Assessment Report, then modify and add respective figures and other necessary words/sentences for your specific school. Describe HVAC controls energy management opportunities and recommendations. KEEPS Report Input 56

57 KPPC Kentuckys Resource Center for Environmental Sustainability 57 EMO 4: Commissioning, Retro- commissioning and Re-commissioning If the school has never been commissioned, recommend retro-commissioning. If the school has not been commissioned in 2 to 3 years, recommend re- commissioning. If the school has undergone major building renovations or expansion or it is planned in the future, commissioning should be recommended. If ENERGY STAR ® Target Finder benchmarked the school higher than the average CBECS K-12 school, consider commissioning. If school is due for HVAC replacement, defer commissioning until equipment is replaced.

58 KPPC Kentuckys Resource Center for Environmental Sustainability 58 Commissioning Benefits Schools have an average 3.3-year simple payback, or $0.09/ft². Retro-commissioning typically translates into energy savings of 5 to 15%. As a result of the process, staff will understand the building and how to keep it in optimal condition.

59 KPPC Kentuckys Resource Center for Environmental Sustainability Locate Retro-Commissioning in the KEEPS Assessment Report and modify respective figures and other necessary words/sentences for your specific school. Modify the inset box by multiplying the building square footage by $.30/sq ft to obtain cost, and by $.09/sq ft to obtain estimated annual savings. Simple payback would be 3.3 years. KEEPS Report Input 59

60 KPPC Kentuckys Resource Center for Environmental Sustainability 60 References O&M Best Practices http://www1.eere.energy.gov/femp/pdfs/omguide_complete.pdf Energy Efficiency in Industrial HVAC Systems Http://www.p2pays.org/ref/26/25985.pdf Recommended Actions Checklist - CO Sensors http://www.epa.gov/iaq/schooldesign/recommended_actions_checklist EnergySmart Schools U.S. DOE http://www1.eere.energy.gov/buildings/energysmartschools/o-and-m_guide.html ASHRAE Energy Design Guides website http://www.ashrae.org/technology/page/938 ASHRAE Life Expectancy Table http://www.masterplan.uconn.edu/images/0323%20West%20Hartford%20Study.pdf Collaboration for High Performance Schools http://www.chps.net/dev/Drupal/node/40

61 KPPC Kentuckys Resource Center for Environmental Sustainability 61 Resources Available for download from the KEEPS Toolkit Library http://www.kppc.org/KEEPS

62 J.B. Speed School of Engineering University of Louisville End of Presen tation (502) 852-0965 www.kppc.org/KEEPS Kentucky Energy Efficiency Program for Schools KEEPS is funded by the American Recovery and Reinvestment Act through the combined efforts of the Kentucky Department for Energy Development and Independence, the U.S. Department of Energy and KPPC.


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