UTC Energy Management Guidebook
Total Page:16
File Type:pdf, Size:1020Kb
U TC Energy Management Guidebook UTC Energy A systematic approach Management Guidebook to formulating and implementing an effective energy management plan. Introduction Rising energy costs and global environmental concerns affect A systematic approach our business every day. Our response is to develop ever cleaner and more efficient solutions both for ourselves and to formulating and for our customers. Conserving resources and minimizing implementing an effective adverse impacts create competitive advantage in an environ- energy management plan mentally conscious marketplace. Every United Technologies (UTC) facility worldwide must take an active leadership role in reducing energy consumption, thereby reducing greenhouse gas emissions. Worldwide climate change is an environmental concern facing all of us. How society tackles this challenge will determine the quality of life for future generations. UTC is pleased to provide you with this Supplier Energy Management Guidebook. The Guidebook will provide you with a systematic approach to formulating and implementing an effective energy management plan. The Guidebook offers standard work processes developed by UTC facilities CARRIER managers, along with standard practices adopted from the HAMILTON SUNDSTRAND OTIS ANSI MSE 2005 Standard for Energy Management. PRATT & WHITNEY SIKORSKY After you have implemented these practices, your site will have UTC FIRE & SECURITY taken significant steps in reducing your energy use, cost and UTC POWER impact on the environment. Contents 1 Introduction UTC Energy Management 16 Lighting Management Program Guidebook Efficiency Standards Operating Standards 4 Energy & Greenhouse Average Daily Electric Profile Best Practices Gas (GHG) Annual Electrical Profile Metrics Data Management Essential Elements of Energy 20 Compressed Air Management Program Data Management Efficiency Standards Electrical and Natural Gas Operating Standards Consumption and Cost Operating Cost Best Practices 7 Utility Rate Review Best Practices Management Program Annual Natural Gas 28 Boilers and Steam Consumption Profile Efficiency Standards Operating Standards Best Practices 8 Analyze Consumption Profiles Load Management Metrics Identification of Major Loads 34 HVAC Systems & Controls Management Program 11 Energy Procurement Market Rules Efficiency Standards Price Volatility Operating Standards Retro-commissioning Best Practices 14 “Shut-it-Off” Best Practices Metrics 38 Combined Heat and Power (CHP) 40 Building Envelope 42 Appendices 42 A: UTC Supplier Self-Assessment 43 B: Rules of Thumb 44 C: Conversion Factors 45 D: Glossary 46 E: Where to Get More Information 47 F: GHG Protocol Energy & Greenhouse Gas 4 / 5 Information from sources such as utility bills, utility meters, energy sub-meters, Consumption history should (GHG) Data Management published utility tariffs, energy supply contracts and external market updates be recorded and displayed will be used for four main purposes: 1. To establish a baseline by answering the questions: “How much energy do I currently use?” Average Daily Electric Profile “When do I use that energy?” “How much is that energy costing me?” kW 1,500 2. Establish a benchmark of optimal 1,250 “Energy Intensity” in kWh/sq. ft. or 1,000 mmbtu/unit of production. The first and most important 750 3. To establish the site’s GHG inventory 500 step in an energy and (see Appendix F), the summation of all 250 GHG management program GHG emissions generated by operating 2 4 6 8 10 12 14 16 18 20 22 24 is Data Management the business including energy consump- Time (Hour) tion and direct process emissions con- ⅷ Peak Day ⅷ Average Weekday ⅷ Average Weekend verted into carbon dioxide emissions equivalent (CO2e). Annual Electrical Profile 4. To evaluate the ongoing effectiveness of the energy management program to kWh (in thousands) Peak kW (in thousands) Collect 24 months enable quick diagnosis of the root cause 700 1.6 of any problem and timely implementation 612 1.4 of all utility of effective corrective measures. 525 1.2 437 1.0 consumption data 350 .8 262 .6 175 .4 87 .2 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ⅷ kWh ⅷ Peak kW Energy Data Management (continued) Utility Rate Review 6 / 7 Essential Elements of Energy & GHG Data Management: Natural gas and electric utility companies offer Collect and record a 24-month history of Keep a detailed record of consumption rate structures (or tariffs) that vary according to all utility cost and consumption, including profiles (hourly for electric consumption, but not limited to electricity, natural gas daily for natural gas use) customer size and load profiles. and fuel oil Establish a budget and monthly Check the status of all Collect and report direct process emis- consumption projection and compare For example, many electric utilities offer Best Practices tariffs with one set of rates for on-peak utility accounts. Large sites sions for all six greenhouse gases in the projection with actual data with multiple meters may conformance with The Greenhouse Gas hours and another for off-peak hours. Request an annual rate Conduct a review of utility invoices, be paying service charges Protocol, a corporate accounting and These rate structures should be reviewed from the utility company for inactive meters checking for mistakes or misapplications reporting standard by the World Resource annually for suitability with your site’s Institute (WRI) and the World Business of tariffs that add cost specific consumption profile. Utility com- Review terms and condi- Review the status of utility Council for Sustainable Development Allocate energy cost by business unit (WBCSD). (see Appendix F) panies can usually compare the cost of tions of each rate structure company and/or govern- or department service for different tariffs by running a to make sure they apply ment-sponsored conserva- Keep a record of current energy supply tion programs. Programs computer program. may offer incentives for contracts and utility tariffs for each account Check accuracy of: It should be noted that rates change over investments in energy con- ▶ tax credits servation projects time due to government regulation and ▶ billed kW vs. actual kW market conditions. Site-specific require- ▶ power factor correction ments also change over time. So it makes penalties sense to review rate structures periodi- Electrical and Natural Gas Consumption, Cost and GHG Emissions ▶ credits for interruption riders cally, and particularly whenever the site Electric Natural Gas requirements change. Electric Natural GHG Gas GHG Unit Cost Emissions Unit Cost Emissions Utility Rate Review Annual Gas Consumption Profile Peak kW kWh Cost $/kWh metric tons MCF Cost $/MCF metric tons January 980 431,520 $50,584 $0.12 186 3,690 $39,007 $10.57 201 $/kWh Cost (in thousands) February 966 458,640 $52,666 $0.11 197 3,175 $37,460 $11.80 173 0.10 60 50 March 945 445,200 $51,183 $0.11 191 3,107 $33,579 $10.81 169 0.08 April 1,001 417,120 $50,755 $0.12 179 1,654 $21,264 $12.86 90 40 0.06 May 1,115 430,800 $55,930 $0.13 185 1,030 $10,831 $10.52 56 30 0.04 June 1,191 546,240 $78,364 $0.14 235 502 $5,404 $10.76 27 20 July 1,398 596,880 $88,069 $0.15 257 345 $3,588 $10.40 19 0.02 10 August 1,140 509,760 $70,944 $0.14 219 603 $5,567 $9.23 33 September 1,130 440,500 $55,000 $0.12 189 752 $6,855 $9.12 41 Time of day JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC October 985 450,240 $48,254 $0.11 194 1,620 $18,385 $11.35 88 ⅷ Off Peak ⅷ Shoulder ⅷ On Peak November 852 442,080 $45,987 $0.10 190 2,878 $36,646 $12.73 156 December 855 411,840 $45,160 $0.11 177 4,012 $52,184 $13.01 218 Total 5,580,820 $692,896 $0.12 2,400 23,368 $270,770 $11.59 1,270 Utility rates should Review energy conservation rebate While reducing energy consumption and cost is important for maintaining financial and be checked and incentive programs offered by competitive strength, it is also important to make a company commitment to improving the environment by reducing greenhouse gases. Energy conservation is the best way to annually your local utility company accomplish that goal. Load Management 8 / 9 Effective Load Management requires a Sample Electric Bill strategic approach that includes analyzing load profiles, understanding equipment Demand Charge ($7.10 per kW) and then installing control strategies. One additional and very important activity $7.10 X 2100kW = $14,910 is monitoring. As with any continuous + A 15 minute peak in improvement process, ongoing monitoring Energy Charge ($.065 per kWh) or sub-metering must be employed to $0.065 X 350,000kWh = $22,750 electric demand (kW) can track progress. significantly increase your Total Electric Bill $37,660 electric bill for 12 months Analyze Consumption Profiles Energy consumption profiles should be Load Management reviewed and analyzed for cost drivers. A Analyze each cost component review of monthly energy data (natural gas kW 2,500 and electric) will show seasonal trends. A of your electric bill before you 2,000 review of consumption data in shorter take action 1,500 increments will illustrate key cost drivers. 1,000 500 Large natural gas accounts should Sample of Top 10 Electric Loads obtain daily consumption records Time (Hour) 2 4 6 8 10 12 14 16 18 20 22 24 Equipment Load Operation Large electrical accounts should obtain 1. Furnace 75kW 40hr/wk FORMATION OF SILICON CRYSTAL IN FURNACE hourly consumption records 2. Air Conditioner 60kW 60hr/wk This detailed energy data is usually available from utility companies and is invaluable 3. Air Compressor 50kW 168hr/wk Electric Load Management is a process Whatever you call it, this process is in understanding consumption patterns and 4.