Architect and Engineer Lunch and Learn...Catalog Mean Lumens CRI Ballast Factor (BF) Lamp Mean...
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Architect and Engineer Lunch and Learn September 30, 2014
Transcript of Architect and Engineer Lunch and Learn...Catalog Mean Lumens CRI Ballast Factor (BF) Lamp Mean...
Architect and Engineer
Lunch and Learn
September 30, 2014
The Team
Kristi Hardy, CenterPoint Energy
Energy Efficiency Program Manager
Michael Sciortino, CLEAResult Program Consultant
August Vega, CLEAResult Program Consultant
Fred Wu, CLEAResult Program Manager
Jaymar Davis, CLEAResult Field Engineering Manager
Team Roles
Program Administrator
Fund & market programs, conduct post inspections,
administer incentive payments
Program Implementer
Conduct outreach, provide technical assistance,
benchmarking, energy master planning as needed,
verify energy savings
Today’s Presentation
1. Houston New School Construction Trends
and Energy Efficiency Potential
2. CenterPoint Energy SCORE:
Program Overview
3. Maximizing SCORE Benefits
Houston-Area School Growth
2007-2013
169 Schools constructed
23.3 million Square footage of all new schools in this period
170,000 students Capacity of these new schools
Source: Texas Comptroller’s Office
Upcoming Bond Elections
Katy ISD: $750 million
Fort Bend ISD: $495 million
Lamar CISD: $243 million
Klein ISD and Conroe ISD: Considering 2015
bond proposals
Houston School Energy Costs
$225 million Energy spend of Houston schools in 2013-2014
$195 Average annual energy cost per student
$1.44 Average annual energy cost per sq. ft.
Energy Efficiency Potential:
2015-2020
Base case: $27.1 million in additional energy
costs for new Houston-area schools
With construction 10% more efficient than base,
we could save $2,712,000
At 20%, $5,424,000
At 30%, $8,316,000
At 40%, $10,848,000
SCORE Overview
K-12 and higher education
customers
Cash incentives for energy
efficiency projects
Additional (no cost) services
to help schools get started: Benchmarking
Energy Master Planning
Technical Assistance
Communications Support
Market Transformation
• SCORE aims to make energy efficiency
practices standard in the NC marketplace
• SCORE addresses common barriers to EE
• Cost concerns
• Limited understanding of EE measures
• The SCORE program offers free energy
efficiency consulting services during the
new construction planning process
SCORE Program Approaches
Deemed: Program estimates savings of measures such
as HVAC and lighting based on drawings, submittals, and
AHRI cert sheets based on pre-approved formulas and
building profiles.
Measurement & Verification (M&V): Program works
with a third-party to estimate savings of measures that are
not applicable for deemed savings, e.g. creating a building
energy model to estimate energy usage.
SCORE Financial Incentives
Measure Name $/kW $/kWh
Lighting $125 $0.03
Lighting- LED $125 $0.06
HVAC- Chillers $175 $0.06
HVAC- DX $175 $0.04
Roofing $150 $0.06
Motors $175 $0.04
Variable Frequency Drives $150 $0.04
Window Film/Replacement $125 $0.04
Other/Custom* $175 $0.06
SCORE Lite Financial Incentives
Measure Name $/kW $/kWh
Lighting $120 $0.04
Lighting- LED $210 $0.08
HVAC- Chillers $260 $0.11
HVAC- DX $240 $0.09
Roofing $240 $0.09
Motors $235 $0.09
Variable Frequency Drives $180 $0.07
Window Film/Replacement $200 $0.08
Other/Custom* $175 $0.06
SCORE Program Results,
2006-2013
Demand
Savings
(kW)
Energy Savings
(kWh/yr)
Direct
Incentives Paid
($)
30,858 82,200,000 $7,267,000
SCORE Program Results,
2014 (Expected)
Demand
Savings
(kW)
Energy Savings
(kWh/yr)
Direct
Incentives Paid
($)
3,500 13,600,000 $1,360,000
Demand
Savings
(kW)
Energy Savings
(kWh/yr)
Direct
Incentives Paid
($)
947 4,600,000 $360,000
New Construction Totals:
CenterPoint EE Program Portfolio
Retro-Commissioning – identifies no-cost or low-cost
building tune-up measures that existing commercial and
industrial customers can implement to reduce demand and
energy use.
Load Management– awards incentives to commercial
customers who can curtail load during specific demand
events.
Standard Offer Program – awards incentives to
approved service providers who install energy efficiency
retrofit projects in commercial facilities.
Maximizing SCORE Benefits in New Construction
M&V Options
Whole Facility
Option C – Whole Facility
• Need both baseline and reporting period data
• Assess performance of the whole facility, retrofitted and non-retrofitted systems or areas
• Significant energy savings (10% or more of consumption measured by utility meter)
Option D – Calibrated Simulations
• When there is no meter (of facility) in the baseline
• Baseline data can be ‘manufactured’ under controlled circumstances.
• Most expensive method and complicated
M&V Project Process
Submit M&V Plan
Construction
Incentive Payment (40%)
Submit M&V Savings Report
Incentive Payment (60%)
After 12 mo. Post Bills & Model Calibration
Bldg. Energy Performance (BEPS)
Bldg. Utility Performance (BEPU)
Utility & Fuel Use Summary (PB-S)
Calibrating Your Energy Model
Efficient design + efficient operation =
energy savings
A note about commissioning…
Project Spotlight,
Partner/Measure
Sheldon ISD/
Garrett Elem School
Full M&V, Option D
Energy Savings:
447,200 kWh/yr
Demand Savings:
264 kW
SCORE Incentive:
$57,548
Project Spotlight,
Partner/Measure
Houston ISD/
Dogan Elem School
Full M&V, Option D
Energy Savings:
124,710 kWh/yr
Demand Savings:
40.83 kW
SCORE Incentive:
$14,627
Project Spotlight,
Partner/Measure
Galena Park ISD/
Cunningham
Middle School
Full M&V, Option C
Energy Savings:
153,851kWh /yr
Demand Savings:
64.00 kW
SCORE Incentive:
$15,754
Optimization Strategies
Design Guides
(Lighting, HVAC, Building Envelope)
Lighting Design Guides
3
0 © CLEAResult,
2014
Standard T8 Specifications
lamp &
ballast
type
catalog
initial
lumens
catalog
mean
lumens
CRI ballast
factor (BF)
mean
lumens
with BF
# of lamps mean
lumens
system
wattage
mean
lumens
per watt
Basic
Grade 32W
F32T8s &
GEB
(generic
electronic
ballast)
2,800 2,590 75 - 78 0.88 2279
1 2,279 30 76
2 4,558 58 79
3 6,838 87 79
4 9,117 114 80
lamp &
ballast
type
catalog
initial
lumens
catalog
mean
lumens
CRI ballast
factor (BF)
mean
lumens
with BF
# of lamps mean
lumens
system
wattage
mean
lumens
per watt
F34T12CW
& Energy
Saving
Magnetic
2650 2300 62 0.89 2047
1 2047 44 47
2 4094 72 57
3 6141 116 53
4 8188 144 57
Footcandles (fc) = Total Lumens (lm) ÷ Area in Square Feet
HP and RW T8 2-Lamp Systems
Ballast
Options
Catalog
Initial
Lumens
Catalog
Mean
Lumens CRI
Ballast
Factor
(BF)
Lamp
Mean
Lumens
With BF Lumen
Maintenance
# Of
Lamps Mean
Lumens System
Wattage
Mean
Lumens
Per Watt
2lamp-R 3100 2900 82 - 86 0.77 2,233 95% 2 4466 48 93.0
2Lamp-N 3100 2900 82 - 86 0.87 2,523 95% 2 5046 53 95.2
2Lamp-H 3100 2900 82 - 86 1.00 2,900 95% 2 5800 62 93.5
2Lamp-V 3100 2900 82 - 86 1.18 3,422 95% 2 6844 73 93.8
Lamp
Options
Catalog
Initial
Lumens
Catalog
Mean
Lumens CRI
Ballast
Factor
(BF)
Lamp
Mean
Lumens
With BF Lumen
Maintenance
# Of
Lamps Mean
Lumens System
Wattage
Mean
Lumens
Per Watt
25W 2400 2256 82 - 86 0.87 1,963 95% 2 3925 43 91.3
28W 2585 2430 82 - 86 0.87 2,114 95% 2 4228 48 88.1
High Performance T8 2-Lamp Systems
Reduced WattageT8 2-Lamp Systems
Footcandles (fc) = Total Lumens (lm) ÷ Area in Square Feet
Targeted Lighting Levels
http://eeref.engr.oregonstate.edu/@api/deki/files/993/
Typical Classroom
• Example of lighting in renovation in an Classroom
• Classroom layout with 12 fixtures
• Code allowed Power Density = 1.4 W/SF for a typical office
• Recommended footcandle levels, between 30 and 50 fc (IES recommendation)
Area # of
Fixtures Fixture
Type Total Watts
Area (in sq feet)
Power Density (W/SF)
Average FC
Max FC Min FC
Classroom 12 3 lamp, 28W T8
1164 W
1073 1.1
W/SF 39 47 24
Recommendation
• Recommend 2 lamp, 28W T8 system with low power ballast’
• Same number of fixtures, reduced number of lamps per fixture
• New Power Density meets code requirements
• Average Footcandle levels are within range of IES recommendations
• Windows on exterior wall will supplement light levels as well
Area # of
Fixtures Fixture Type
Total Watts
Area (in sq feet)
Power Density (W/SF)
Average FC
Max FC Min FC
Classroom 12 2 lamp, 28W T8
516 W 1073 0.5 W/SF 31 38 19
Cost Analysis
What does this mean in terms of cost?
Simple Payback Calculation:
O
R
?
Area Proposed # of Fixtures
Proposed Fixture
Type
Proposed Total Watts
Rec. # of Fixtures
Rec. Fixture
Type
Rec. Total Watts
Annual Op Hours
Annual kWh
Savings
Electric Cost Savings at
$0.08/kWh
Incremental Labor per Fixture*
Simple Payback
Classroom 12 3 lamp, 28W T8
1164 W 12 2 lamp, 28W T8
516 W 3600 2333 $187 ($20) -1.3
Reduce Wattage T5HO: 47W - 51W
MFG Model Mean
Lumens
Avg. Life
3hr Starts
Watt per
Lamp
Standard
T5HO
RW-System
Wattage
Saving vs.
Std. T5HO
Savings
vs. 400MH
OSRAM PENTRON HO 47W/ES 4,380 30,000 47W 234W 206W 28W 242W
GE T5HO Watt-Miser 47W 4,410 30,000 47W 234W 202W 32W 246W
Philips F54T5HO EA/ALTO 49W 4,400 25,000 49W 234W 214W 20W 234W
OSRAM LUMILUX HO 50W/ES 4,450 24,000 50W 234W 215W 19W 233W
GE T5HO Watt-Miser 51W 4,600 25,000 51W 234W 216W 18W 232W
Before – 400MH After– T5HO
Auditorium Lighting
Par30 – Par38 LED
65-70W Halogen
2,000 – 6,000 Hrs Rated Life
14W-18W LED
25,000 Hrs Rated Life
MR16 LED
35W Halogen
2,000 – 6,000 Hrs Rated Life
7W-10W LED
25,000 Hrs Rated Life
HVAC Zoning and Controls
HVAC Code and Standards
Baseline HVAC Equipment New HVAC Equipment
Description Tonnage
Range
Minimum Efficiency
(ASHRAE 90.1 2007
or IECC 2009)
New Good Efficiency (CEE Tier 1)
New Better Efficiency (CEE Tier 2)
Efficiency Rating Efficiency Rating
Small Packaged Systems & Roof-Top Units (Small DX) SEER SEER
1 Phase Split & Packaged < 5.42 13.000 15.000 16.500
3 Phase Split & Packaged < 5.42 13.000 14.000 15.000
Packaged and Split 5.42 to <
11.25 11.000 11.500 12.000
Large Packaged Systems & Roof-Top Units (Large Dx) EER EER
Large Air Conditioners (11.25 11.25 & < 20 10.800 11.500 12.000
Large Air Conditioners (20 20 to < 63.33 9.800 11.500 12.000
Large Air Conditioners (63.33 63.33 and up 9.500 9.700 10.200
Air-Cooled Chillers with Condenser (AC Chiller) kW/ton kW/ton
Air-Cooled with Condenser
(<150) < 150 1.255 1.212 1.180
Air-Cooled with Condenser
(150 150 and up 1.255 1.212 1.180
Water-Cooled Chillers (WC Chiller) kW/ton kW/ton
Water-Cooled (<150) <150 0.703 0.663 0.639
Water-Cooled (150 to<300) 150 to < 300 0.634 0.586 0.541
Water-Cooled (300 and up) 300 and up 0.577 0.541 0.500
HVAC After-Hours Usage
• Sporting Events
• After school
activities
• Summer schedules
• Office hours
HVAC Zoning Optimization
• Office
• Auditorium
• Gyms
• Rest of School
Use combinations of
Chillers, DX or Heat
Pumps to optimize
zones.
Variable Refrigerant Flow (VRF)
HVAC Systems
HVAC Controls
• Integrated HVAC
occupancy controls
• Automatically
adjust temperature
set point when
room is unoccupied
• Close damper of
VAV boxes when no
one is in the room
Thank you!
Kristi Hardy, CenterPoint Energy (713) 207-6974
Michael Sciortino, CLEAResult (512) 583-3748
August Vega, CLEAResult (281) 902-1155
