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Energy Efficiency Seminar Considerations When Pursuing Energy Efficient Projects November 6, 2009 Manny Pervolarakis, CEM Principal Supervisor- Energy.

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Presentation on theme: "Energy Efficiency Seminar Considerations When Pursuing Energy Efficient Projects November 6, 2009 Manny Pervolarakis, CEM Principal Supervisor- Energy."— Presentation transcript:

1 Energy Efficiency Seminar Considerations When Pursuing Energy Efficient Projects November 6, 2009 Manny Pervolarakis, CEM Principal Supervisor- Energy Partnership DTE Energy SEMCOG

2 We may find that, while we're drastically cutting our energy consumption, we're actually raising our standard of living. -David R. Brower (1912 – 2000) November 6, 2009 Energy Seminar 2

3 Agenda Energy Conservation Opportunity (ECOs) Identification Value of an Energy Audit Prioritizing ECOs New Technology Assessment November 6, 2009 Energy Seminar 3

4 Where Do I Begin? November 6, 2009 Energy Seminar 4 Energy Bills $$$

5 Project Identification How do I identify energy projects (Energy Conservation Opportunities- ECOs)? How do I prioritize energy projects? –Cost? –Savings? –New Technologies? November 6, 2009 Energy Seminar 5

6 How to identify Energy Conservation Opportunities- ECOs Have an Energy Audit completed –Preliminary Energy Assessment –Detailed Energy Audit November 6, 2009 Energy Seminar 6

7 How to identify Energy Conservation Opportunities- ECOs Do it yourself Assemble a Team Hire an outside Energy Auditor November 6, 2009 Energy Seminar 7

8 Determine Scope of Work The Facility and Equipment Retail –Lighting, small HVAC, small office equipment Grocery/C-Stores –Refrigeration, small-med HVAC, Lighting, small equipment Warehouse/Distribution –Large Refrigeration, medium HVAC, Lighting, Fork trucks Restaurant/Food Service –Food prep, small HVAC, Lighting, Dishwashing, Hotel/Hospitality/ Recreation Centers –Small to large HVAC, Lighting, Food Service, Laundry, Pools Government/Office Buildings/Banking –Small to large HVAC, Lighting, office equipment Industrial Process –Substantial variation in process equipment based on product; thermal processes, large motors, complex systems November 6, 2009 Energy Seminar 8

9 Gather Data Utility Usage History –12 to 36 months monthly energy usage – in Units and Dollars – both Gas and Electric –Chart in Spreadsheet; look for abnormalities –Review Actual Bill Check correct Tariff Billing Factor Sales Tax Billing Name and Address –Start reading your meter(s) frequently and track November 6, 2009 Energy Seminar 9

10 The Facility Walkthrough / Inspection Gather detailed data on the following systems: Billing Data Heating, Ventilation and Air Conditioning (HVAC) Building envelope (incl. Thermographic Analysis) Boiler and steam distribution. Electrical Systems. Motors. Lighting. Process Equipment. Air Compressors. November 6, 2009 Energy Seminar 10

11 Get the Big Picture What are the physical boundaries of the space being looked at? (outside –v- inside common walls) Is there more than one meter? How is the space used/occupancy schedule Who/How controls temp, lighting, set-backs What equipment is used differently during different production schedules (max –v- average demand) November 6, 2009 Energy Seminar 11

12 Gather Data – what to collect HVAC – –type, size, age, condition, how controlled Lighting – –type, fixture type, quantity, variation Equipment – –what it is, input demand, operation schedule November 6, 2009 Energy Seminar 12

13 Gas and Electric Meters Confirm Meter Numbers and Billing Factors –Be sure that the billing information is correct and billing the correct space/account November 6, 2009 Energy Seminar 13

14 Gather Data – a few details Look for evidence of things broken –Most facilities have taken Energy Management Action long ago, but installation once does NOT mean it will always be working November 6, 2009 Energy Seminar 14

15 General Maintenance Look for things in poor condition or not taken care of –Even good equipment fails when not maintained November 6, 2009 Energy Seminar 15

16 Age versus Condition Look for old things that should be replaced –Focus on improved Efficiency, not just because they are old November 6, 2009 Energy Seminar 16

17 Improper or Poor Installations November 6, 2009 Energy Seminar 17

18 Space Heating What type of system(s) does the facility have? Is there a more efficient system? Is replacement economical? November 618, 2009 Energy Seminar 18

19 Space Cooling Small tonnage, air cooled, LEAST efficient type Expensive to replace, but, more expensive to operate less-efficient equipment November 6, 2009 Energy Seminar 19

20 November 6, 2009 20 Energy Seminar Energy Saving Opportunities Boiler Systems Condensate Return Make-up systems Blow downs Steam Optimization Steam traps Condensate return stations Steam Leaks Building Envelope Insulation Windows/ Doors Roofs HVAC Controls Shut down equipment Economizer (free cooling) Space temperatures and exhaust Compressed air systems Upgrade Controls to eliminate blow-offs System pressure Air leaks

21 November 6, 2009 21 Energy Seminar Energy Saving Opportunities Facility Utility Tracking, Measuring & Trending Electrical Natural Gas Water Monitoring for lighting, HVAC, Process Equipment, Compressed Air etc. Energy Conservation Programs Weekend and Holiday Shutdowns Demand limiting (manual or automatic) Employee Incentives Programs Lighting Systems Upgrade Fluorescent, including task lighting High Intensity Discharge HID lamp & fixtures Controls (sensors or programmable panels) HVAC Upgrades Controls for more efficient operation Air conditioned leakage Refrigerant lines VFD

22 Lighting Retrofit Opportunities Incandescent to compact fluorescent T-12 Fluorescent to T-8 Fluorescent HID to T-8 or T-5 Fluorescent (warehouse, garage) HID (MV, LPS) to HID (HPS, MH) LED Exit Signs LED down-lighting, spot-lighting, room-lighting, wall-washing, exterior parking lot and street lighting November 6, 2009 Energy Seminar 22

23 Building Envelope All the components of the building envelope need to work together to keep a building warm in the winter and cool in the summer. November 6, 2009 Energy Seminar 23

24 Example - Check List EnvelopeSpaceHVAC Insulation Equipments & lights schedule For heating hot water: balancing, modular boiler, boiler economizer For steam: condensate trap maintenance, modular boiler, boiler economizer For chilled water: balancing For air cooled: condenser surface condition For air system: exhaust fan schedule, economizer proper operation, diffusers & registers are not blocked, ductwork is cleaned. Infiltration Thermostat settings Door openingsCO 2 sensors Windows frames & shading Occupancy sensors Negative pressure in the building Timers November 6, 2009 Energy Seminar 24

25 Energy Conservation Programs - Compressed Air Leaks November 6, 2009 Energy Seminar 25 24Hr/Day-100 PSI -$.09/kWh 1/16 inch $750 1/8 inch $3,000 1/4 inch $12,000 3/8 inch $27,000 1/2 inch $48,000 1/4 Inch-$12,000 1/8 Inch-$3,000 Drop 2 PSI and save 1% energy cost. 20 HP Compressor full load is costing approximately $16,000/Year.

26 Value of an Energy Audit Identify biggest Bang for the Buck projects Identify project priorities based on budget, grant money available, etc. Identify operational issues with equipment Identify maintenance problems with equipment Opportunity to interview occupants of facilities to gain valuable insight and to get suggestions Compare energy usage to other similar buildings in area (baseline) Identify available Incentives and Rebates for ECOs (ie. Energy Optimization Program, etc.) Identify possible applications and options for using new technologies and renewable resources November 6, 2009 Energy Seminar 26

27 Prioritizing Energy Projects 1.No or Low Cost Projects –Operational Changes –Maintenance –Re-commissioning Equipment –Changing Habits –Sensors/ Timers (shuts off automatically) –Energy Awareness (educate employees) –Energy Conservation Programs –Create an Energy Policy November 6, 2009 Energy Seminar 27

28 November 6, 2009 28 Energy Seminar Adjust thermostat for savings! Every 1 degree down Saves 2-3% off heating bill Energy Awareness

29 Dont assume it works… …just because its installed November 6, 2009 Energy Seminar 29

30 Economizer November 6, 2009 Energy Seminar 30

31 Economizer November 6, 2009 Energy Seminar 31 Use free cooling in Spring and Fall Drop down temperature at night Use Demand Control Ventilation (CO2 sensors)

32 November 6, 2009 32 Energy Seminar Typical Simple Packback Natural Gas Steam Systems0.3 – 1.5 years HVAC0.5 – 1.5 years Building Envelope & Insulation0.5 – 20 years Electrical Compressed Air0.2 – 1.3 years Lighting1.5 – 6.0 years Chilled Water Systems0.3 – 2.0 years

33 Prioritizing Energy Projects 2.Projects requiring Capital Funding –Replacing existing equipment with more efficient equipment (ie. lighting, hot water modular boilers, premium high efficiency motors, etc.) –Increasing efficiency of existing equipment (ie. Installing VFDs on motors, capture waste heat and water for reuse) –New Technologies (lighting, HVAC, etc.) –Renewable Resources (solar, wind, biomass, geothermal) Decisions based on several factors (priorities): savings, cost, payback, environmental impacts (carbon footprint)? November 6, 2009 Energy Seminar 33

34 November 6, 2009 Energy Seminar 34 How do we Increase Boiler Efficiency? Proper sized boiler Modular boiler Boiler economizer Regular maintenance/ tune-ups

35 Boiler efficiency can be increased by replacing a single boiler with a network of smaller modular boilers. Since modular boilers can be fired independently each module would be fired on demand at 100 percent capacity with load fluctuations being met by firing more or less boilers. When the first boiler can no longer keep up with the heat demand, a second boiler picks up the extra heat load. Also, modular boilers have low thermal inertia which provides rapid response and low heat-up and cool- down losses. November 6, 2009 Energy Seminar 35 Modular Boilers

36 The heat exchanger has been specifically designed to capture the maximum amount of energy from exhaust gases. Squeeze out an amazing 97% of all heat of combustion energy contained in the flue gases. November 6, 2009 Energy Seminar 36 Boiler Economizer

37 Environmental Impacts Saving 10,000 kWh (1.5 HP motor or ten 100 watt lamps) Help The Environment Reduces 20.9 tons of carbon dioxide Reduces 107 lb.. Of sulfur dioxide Reduces 45 lb.. Of nitrogen oxide Pollution associated with the emissions of more than 2.8 cars Equivalent of planting more than 3.8 Acres of trees November 6, 2009 Energy Seminar 37

38 DDC control November 6, 2009 Energy Seminar 38

39 New Technologies Many vendors coming out of woodwork with new technologies Dont just take their word New technologies are generally more expensive than current technologies with longer paybacks New technologies may have unproven results and reliability due to infant stage How can customers evaluate products and services appropriately? November 6, 2009 Energy Seminar 39

40 New Technologies How can a customer make an informed decision? Get required information from vendor –How long on market –Where has product been installed/ For how long/ Talk to contact –Get data/ cut sheets from vendor –Testing results (i.e. UL approved, etc.) –Warrantees/ Guarantees Need unbiased opinions/ expertise –Education (technical seminars, internet, etc.) –Energy Manager assistance –DTE Energy (vendor relationships, EO Pilot Program, incentives, expertise) November 6, 2009 Energy Seminar 40

41 Energy Manager Typical Duties Energy Audits & Projects Conducts tours (audits) of facilities to identify energy saving opportunities. Identifies, analyzes, implements, and manages customer energy related projects to optimize energy utilization. Develops project proposals for energy conservation opportunities (ECOs), including project costs, savings, and payback analysis. Manages energy project schedule and budget to support customer expectations Actively researches existing and new products, services, and technology that provide value and optimize energy consumption. Provides technical support for any and all energy related issues. November 6, 2009 Energy Seminar 41

42 Energy Manager Typical Duties Tracking & Optimizing Energy Usage Determine monthly energy usage for all facilities. Prepare tables and graphs to depict energy usage. Provide tracking, trending, reporting, and recommendations to reduce energy. Enhance EMS functions (if applicable) Provides daily customer on-site energy manager capabilities, including resolving billing inquiries, assisting in power quality and reliability issues, and other energy related specific concerns. Assist in identification and application for available energy efficient funding from state and federal programs November 6, 2009 Energy Seminar 42

43 Energy Manager Typical Duties Develop Programs Develop Energy Awareness Program –Supply energy saving information for each facility –Develop posters, signage, displays, etc. –Designate energy awareness week and perform energy seminars, demonstrations and prizes Establish Employee Recognition/Rewards Program Develop an Energy Curtailment Program –Shut down equipment during off-hours or when not needed –Develop plan and procedure –Track/Trend curtailment results –Reporting/ Communication November 6, 2009 Energy Seminar 43

44 Energy Manager Typical Duties Communication and Training Attend and /or Lead Energy Meetings Develop Management Presentation Materials Create Conservation Articles/Newsletters Establish Communication and Technical Support to Facility Management Teams Educate Employees on Energy Saving Habits and Best Practices November 6, 2009 Energy Seminar 44

45 Energy Conservation Programs - Energy Awareness Energy Awareness along with energy projects contributes to the overall energy reduction Year 1 Year 2 Year 3 November 6, 2009 45 Energy Seminar

46 November 6, 2009 46 Energy Seminar Questions?


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