Energy management 101

619 views

Published on

This slideshare shows the basics of energy management training for schools.

Published in: Education, Technology, Business
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
619
On SlideShare
0
From Embeds
0
Number of Embeds
14
Actions
Shares
0
Downloads
0
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide
  • Explain how lead/lag can help with fuel cost (ie gas, oil). Helps with overall wear and tear on equipment. O/A set points can help with efficiency.
  • Energy management 101

    1. 1. Basics Of Energy Management: For Schools *Not intended for reuse, please do not copy
    2. 2. Why Energy Management? <ul><li>Reduce & Manage Rising Utility Costs </li></ul><ul><li>Reduce over all cost of operation </li></ul><ul><li>Reduce Carbon Footprint </li></ul>
    3. 3. Building Envelope
    4. 4. Energy Conversions
    5. 5. Obtaining Energy Data <ul><li>Time Schedule/AHU/RTU/Fancoils </li></ul><ul><li>Kilowatt usage </li></ul><ul><li>Cooling degree days </li></ul><ul><li>Heating degree days </li></ul><ul><li>Water usage/sewer </li></ul>
    6. 7. Utilities Spreadsheet Year Units January February March April May June July August September October November December 2007 kW Demand 840 866 1295 1299 1321 1432 1340 1198 1421 1403 1196 913 kWh Usage Information was unable to be obtained 2008 kW Demand 744 706 673 1150 1143 1095 1037 1143 1211 938 803 616 kWh Usage 121,040 128,000 104,960 114,120 129,600 103,760 106,160 107,520 111,600 101,760 108,720 121,840 2009 kW Demand 647 656 639 648 713 801 729 653 625 683 673 720 kWh Usage 102,400 113,520 108,240 95,200 110,560 100,879 114,741 104,220 117,280 102,350 105,268 97,600 2010 kW Demand 639 635 654 623 462 713 747 606 577 655 637 662 kWh Usage 97,600 114,720 114,240 100,800 95,200 110,560 144,000 109,040 96,960 115,600 114,000 96,320
    7. 8. Kw Demand
    8. 9. Kwh Usage
    9. 11. Convert Volts to Kw <ul><li>Chiller 480V ∙ 1.732 = 831.36 (3 phase v) </li></ul><ul><li>831.36 . 600A = 498,816 ( watts) </li></ul><ul><li>498,816 Watts </li></ul><ul><li>1,000 Kw </li></ul><ul><li>498.816 Kw ∙ (Power Factor) ∙ 8 = 399 Kw </li></ul><ul><li>Use 0.85 single phase </li></ul>~ = 498.816 Kw
    10. 12. Heating Degree Day (HDD) Cooling Degree Day (CDD) <ul><li>Example: Base for Computing HDD & CDD is 65°F </li></ul><ul><li>Take 65°F – High Temp of the Day </li></ul><ul><li>HDD = (65°F – 50°F) 15°F ∙ 3 Days = 45 degree days </li></ul>
    11. 13. To Size a Building <ul><li>How many bTu/hr? (Elementary) </li></ul><ul><li>Take temp of Rm @ 72°F - 32°F </li></ul><ul><li>This is where bTu starts (40°F difference) </li></ul><ul><li>40 degrees ∙ SqFt of building (57,240 SqFt) </li></ul><ul><li>2,289,600 bTu/hr </li></ul>
    12. 14. CO² Reduction <ul><li>Example: Take Kw (Chiller) 399 Kw ∙ 6 hrs (event drop) = 2394 Kwh </li></ul><ul><li>2,394 Kwh ∙ (0.000718) MT = 1.71 MT/CO 2 </li></ul><ul><li>2,195.12 MT ∙ 1.71 MT/CO 2 = 3,773.12 lbs/CO 2 </li></ul><ul><li>1 Car = One MT/CO 2 or 2,000 lbs </li></ul>
    13. 15. Load Factor <ul><li>Facility used 50,000 Kwh in 30 day billing period / demand of 100 kw </li></ul><ul><li>Kwh = 50,000 Kwh </li></ul><ul><li>Kw ∙ number billing hrs in pay period </li></ul><ul><li>30 days ∙ 24 hrs = 720 hrs </li></ul><ul><li>Kwh = 50,000 </li></ul><ul><li>Hr = 720 </li></ul>= 0.69% Load Factor
    14. 16. How to Manage Your Facility <ul><li>Controlling your Demand </li></ul><ul><li>Automation System </li></ul><ul><li>Scheduling </li></ul><ul><li>Occupied & Unoccupied set points </li></ul>
    15. 18. Using HVAC Equipment to Better Manage Your Facility <ul><li>Creating Air Conditioning / economizer </li></ul><ul><li>VFD Variable Frequency Drive </li></ul><ul><li>Set points </li></ul>
    16. 19. Collecting Measurable Data with use of Data Loggers
    17. 20. Data Logger Calculation
    18. 21. Back-Up Generation <ul><li>Areas of utilizing back-up generation to lower building demand </li></ul>
    19. 22. <ul><li>Creating Air conditioning </li></ul><ul><li>Set Points </li></ul>
    20. 23. Load Profile Report For Middle School 5/2011
    21. 24. Middle School
    22. 25. Load Profile Report For Elementary School 5 /2011
    23. 26. Elementary School
    24. 27. Boilers & Hot water Heaters / Pumps <ul><li>VFD Variable Frequency Drives </li></ul><ul><li>Set Points </li></ul>
    25. 28. Lighting ~How & Where Can We Improve <ul><li>T-8 vs T-12 </li></ul><ul><li>Sight Lighting </li></ul><ul><li>Day Light Harvesting </li></ul>
    26. 29. Where Do We Go From Here! <ul><li>Future </li></ul><ul><li>Alternative Energy </li></ul><ul><ul><li>Solar Energy </li></ul></ul><ul><ul><li>Wind Energy </li></ul></ul><ul><li>Transportation </li></ul><ul><li>Reduction of Carbon Footprint </li></ul>
    27. 31. Time For Questions and Answers <ul><li>Ron Marinelli </li></ul><ul><li>Email: marinellir@lopatcongschool.org </li></ul><ul><li>Phone: 908-213-2995 ext. 2510 </li></ul>

    ×