PRESENTATION Dillon School District 3 Lonnie Russell, CEM, REP - - PowerPoint PPT Presentation
Robert A. McIntyre Director of Technology Joan Smith, Harris Integrated Solutions Energy Solutions Consultant PRESENTATION Dillon School District 3 Lonnie Russell, CEM, REP Latta Energy Project Abraxas Energy Consulting TITLE PAGE LAYOUT
Latta Middle School Latta High School
Stats:
1,600
status
and most successful International Baccalaureate schools
new state of the art Fine Arts Center
WMHPs are very common in the middle school
Set Point too low and in manual “hold” Set Point too low and in manual “hold” Manual “hold” “Emergency Heat” selected There are often many issues when thermostats are accessible. These are just a few of the
the HVAC system never turns off. Some had the fans in manual causing them to stay on, emergency heat selected (uses 3 times the energy of a heat pump!), and set points that were
An EMS could rectify all these problems.
Heat Mode Cool Mode Simultaneous Heating and Cooling in the same space! There are 4 3-ton heat pump units for the band room. One thermostat is in the band director’s office with the door closed and is in cool mode. The other is out in the main practice space and is in heat mode. The thermostat should probably be moved out of the
59% of all the fluorescent lighting at LMS is still T12, mostly the older section of the building (classrooms) and the hallways. The dance studio and facilities shed are also T12. LHS has T12 in the robotics and agriculture building.
Kitchen T12 lighting is still being used in all the hallways and the older section of the building (all areas within the red outlined rectangles).
All the T12 lighting in the middle school, with the exception of the kitchen, is 4-bulb. Not only is this very poor (and quickly becoming
The metal halide lighting in the gym offers an excellent opportunity for an LED upgrade. The 150w “UFO” fixture would be a good upgrade, requiring no guarding, because of its rugged construction.
Fixture Location Quantity Wattage Operating Hours Operating Days Annual Hours Total kWh
Offices, breakroom 26 112 9.5 255 2,423 7,054 Small Conference room 3 112 4 255 1,020 343 Large Conference room, kitchen 15 112 1.5 200 300 504
T8 3‐bulb
Bathrooms 2 89 9.5 255 2,423 431
T8‐2‐bulb
Offices, hallways, copy area 32 59
9.5
255 2,423 4,574
12,906 Fixture Location Quantity Wattage Annual hours Total kWh Rebate per fixture Cost per fixture Labor Net Cost per fixture
Offices, breakroom 26 48 2,423 3,023 $50 $67.36 $0 $17 Small Conference room 3 48 1,020 147 $0 $67.36 $0 $67 Large Conference room, kitchen 15 48 300 216 $0 $67.36 $0 $67
T8 LED 3‐tube
Bathrooms 2 36 2,423 174 $38 $50.52 $0 $13
T8 LED 2‐tube
Offices, hallways, copy area 32 24 2,423 1,860 $25 $33.68 $0 $8
Total 5,421 $2,184 $4,143 $0 Fixture Location kWh Dollars
Offices, breakroom 4,031 $352 $451 Small Conference room 196 $17 $202 Large Conference room, kitchen 288 $25 $1,010
T8 LED 3‐tube
Bathrooms 257 $22 $25
T8 LED 2‐tube
Offices, hallways, copy area 2,713 $237 $269
7,485 $653 $1,959 Combined Payback (in years) 3.00 Combined ROI 33%
Total avg $/kWh $0.0872 Total T8 Tube Count 246 Total Possible Rebate $2,184
88%
Total Investment (minus rebate) $1,959
Totals
Savings Investment Payback (years) ROI
T8 LED 4‐tube
1.28 78% 11.83 8% 40.23 2% 1.13 89% 1.14
T8 LED 4‐tube
Latta Admin Bldg Interior LED lighting Upgrade (IH)
Existing Fixtures Operating Cost
T8 4‐bulb
$615 $30 $44 $38 $399
Total $1,125 Proposed new fixtures
EC motors are very efficient (50% less wattage than a typical shaded pole motor) and can offer multiple speeds Controls the speed of the 2 speed EC motors to slow down to minimum possible speed when the compressor is not running. Compressor only operates about 40% of the time, the other 60% the Frigitek controller can operate the EC motor at a much slower speed, reducing energy consumption by as much as 90%.
The cafeteria dishwasher is no longer used. The HW load has decreased substantially, and there is a large NG water heater with a recirc pump. There is
be a strong choice for this application.
41% reduction in NG usage!
3ton HPs 4-6ton NG 3ton HPs 5ton HP 5ton HP 5ton HP 5ton HP 5ton HP 18ton NG 20ton NG MAU 5ton HP 5ton HP
LMS Kitchen Meter LMS Nurses Station Meter LHS Original Meter E = Electric Meter Locations = Switch Gear or MDP E E E E
X
= NG meter locations
X X X
LHS Gym Meter
DLC Old EPAC Old Gym Custom Prescriptive 1 EC motors x x x N/A websit e 2 4Ton & 7.5Ton ARC controllers x x x N/A x 3 7.5Ton ARC controllers x x 0000128789 x x $1,048 x x N/A x 3/4/19 4 20Ton ARC controllers x x x N/A x 5 18T ALC controllers x 0000128392 x x $5,460 x x N/A x 2/26/19 6 T5 Lighting (library,Entry) x x 0000123893 x x 10/26/17 $461 $461 x x x x x x 3/23/18 7 T5 Lighting (library) x x 0000122781 x x 10/26/17 $285 $285 x x x x x x 3/23/18 8 LES tubes x x PSS17-0000140648 x x 12/4/17 $14,940 $14,940 x x x x x x 12/29/17 9 LES Parking Lot PSS18-0000147463 x x 2/6/18 $1,950 x x x x 4/4/18 10 LES Wall Packs PSS18-0000144299 x x 2/6/18 $2,150 $2,150 x x x x 3/1/18 11 LES remaining x x PSS18-0000151418 x x 4/15/18 $274 $274 x x X x x x 4/25/18 12 Admin Lighting x x PSS17-0000140655 x x 12/4/17 $1,476 $1,476 x x x x x x 12/29/17 13 LMS Lighting x x PSS18-0000143323 x x 1/12/18 $4,932 $4,932 x x x x x x 2/13/18 14 LMS Remaining lighting x x x PSS18-0000150306 x x 3/20/18 $708 $708 x x x x x x 4/3/18 15 LHS Lighting (Acct #5810590512) x x x PSS17-0000141943 x x 12/20/17 $10,956 $10,956 x x x x x x 1/11/18 16 LHS remaining lighting x x PSS18-0000150238 x x 3/17/18 $2,094 $2,094 x x x x x x 4/11/18 17 LHS Gym and Wall Pack Lighting (Acct #6446373026) x x PSS18-0000143324 x x 1/12/18 $6,968 $6,968 x x x x x 2/13/18 18 Vending Misers x x x x x N/A $47,194
$51,752
LMS Paid Out (Mailed) LHS Elem Admin Rebate Type **Rebate Form Sign Submitted Date Rebate Form **Proposal Quote Predicted Amount Totals *Note: Custom material cannot be ordered until the rebate is approved. **Note: Signature and quote typically occur after the work is complete for a prescriptive rebate. *Mat'l Ordered Spec sheet Present Duke Offer Amt. Mat'l Recv'd Project Custom CSS# Prescriptive # Location
Green means the rebate has been dispursed to Latta
Outcome New EMS control in 3 schools Total LED upgrade of all school buildings, the administration building and the elementary school parking lot and entrance road Upgrade to a commercial high temp tankless water heater for the kitchen, eliminating the large tank system Installation of Advanced Rooftop Controllers on selected RTUs Installation of 37 new high efficiency wall mounted heat pumps Install EC motors and controller on walk-in cooler/freezer Install Vending Misers
Opportunity
1. Tighten the operating schedule and control strategies at EPAC 2. Institute more aggressive temperature set points, especially non-occupied (both schools) 3. Debulb LMS 4 bulb T12 Hallway fixtures and upgrade to LED 4. Upgrade LHS gym fixtures to LED 5. Install Vending Misers (both schools) 6. Upgrade LMS T8/T12 fluorescent bulbs to LED 7. Upgrade LHS T8 fluorescent bulbs to LED 8. Install synchronous belts on larger horspower motors (Gym RTUs) 9. Upgrade all T5 fixtures to LED 10. Install NG tankless water heater to replace kitchen tank heater and eliminate recirc pump 11. Install LED lighting in LES 12. Install ARC on 2 EPAC RTUs (4 and 7.5 ton) w/ OA 13. Install EC Motors in Walk-Ins 14. Install ARC on LMS library HP RTU (no OA) 15. Install LED lighting in Admin Bldg 16. Install LED Parking Lot Lighting in LES 17. Install ARC on 20Ton LHS NG RTUs w/ OA 18. Install ARC on 18Ton LHS RTUs (no OA) 19. Install Evaporator EC controller on Walk-ins 20. Install one 4ton 1ph WMHP to replace 5 ton WMHP 21. Install fourteen 2.5ton 1phase WMHPs to replace 3ton WMHP in LMS 22. Install two 2.5ton 1ph WMHPs in LHS 23. Install fourteen 2.5ton 3phase heat pumps to replace 3 ton units in LHS 24. Complete Install of EMS in LHS and implement control strategies 25. Complete Install of EMS in LMS and implement control strategies 26. Install six 2.5ton (five 3ph, one 1ph) WMHPs in LHS 27. Elementary School EMS install