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Oregon Energy Star Homes Measure Update. New Measure Proposal April 22nd , 2014. Measure Name: Energy Star Homes BOP1(Ducts Inside, Equipment Upgrade, Envelope), BOP2 Measure Type: UES Measure Category: Proven Measure Sector: Residential Sunset Date: April, 2014 - PowerPoint PPT Presentation
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Oregon Energy Star Homes Measure Update
New Measure Proposal April 22nd, 2014
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Measure background• Measure Name: Energy Star Homes BOP1(Ducts
Inside, Equipment Upgrade, Envelope), BOP2• Measure Type: UES• Measure Category: Proven• Measure Sector: Residential• Sunset Date: April, 2014• Reason for Update: Update to SEEM94,
Calibration, ProCost Template
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Staff Highlighted Areas• None.
4
Measure Summary Baseline
OR Code Table N1101.1(1)
ORBOP1 Ducts Inside
ORBOP1 Equipment Upgrade
ORBOP1 Envelope Path
ORBOP2 Zonal
ComponentGlazing % <21% <21% <21% <21%Vertical Glazing U-Val 0.35 U-0.30 U-0.30 U-0.25 U-0.22
Flat Ceilings U-0.031 / R-38R-49 w/ R-21 at edge
R-49 w/ R-21 at edge
R-49 w/ R-21 at edge
R-60 w R-45 edge
Vaulted Ceilings U-0.042 / R-30 R-30 R-30 R-30 R-38Walls U-0.06 / R-21 std R-21 Adv R-21 Adv U-0.043, R21&R5 U-0.043, R21&R5Floors U-0.028 / R-30 R-30 R-30 R-30 R-38
Slab F-0.52 / R-15 perimR10 full+R15 perim2'
R10 full+R15 perim2'
R10 full+R15 perim2'
R10 full+R15 perim2'
Basement Walls 7' F-0.565 / R-15 R-19 R-19 R-19 same as code
House ACH 6 ACH 50 4 ACH50 4 ACH50 4 ACH5070% HRV, 2.5 ACH50
Furnace AFUE 0.9 0.92 0.94 0.92 naHeat Pump HSPF 8.5 8.5 / 9.0 8.5 / 9.0 8.5 / 9.0 naCooling SEER 13 13 / 14.5hp 13 / 14.5hp 13 / 14.5hp naDHW Tank EF (gas/elec) .59 / .9 0.62 / 0.93 0.82/ 2.0 0.62 / 0.93 0.93
Lighting 50% CFL, 75 % CFL (Zonal)
80% CFL 80% CFL 80% CFL 100 % CFL
Program Specs
Nominal Value
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Measure Update Summary• Simulations conducted in SEEM 94 • RTF approved new construction calibration applied• Expanded list of prototypes from 3 to 5
• As per NEEA 2007 New Homes Characterization study, 16 % of homes are built slab on grade.
Current Prototypes Proposed PrototypesSingle Family 1344 Crawl Single Family 1344 CrawlSingle Family 2200 Crawl Single Family 1344 SlabSingle Family 2688 Basement Single Family 2200 Crawl
Single Family 2200 SlabSingle Family 2688 Basement
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Impact of EISA Lighting Standards• Assumption: EISA reduces wattage of baseline
incandescent bulbs by an average of 28 %.• 60 W bulb 43 W
• All other calculation details kept constant.
• As per latest RTF staff analysis, CFLs have no incremental cost.
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DHW Update• Linked saving for tank upgrade and low flow
appliance to respective workbooks.
• Slight increase in savings (approx. 400 500 kWh)
• Cost remains relatively constant ($ 100)
8
Furnace Fan CFM/ Ton• Manufacturer suggested flow rate is 400 cfm/ ton
(previous assumption)
• A 73 % adjustment factor applied to suggested flow rate.
• NEEA New Homes Characterization study (2007) conducted by RLW.
• Makes a difference of approximately 100 kWh on an average.
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Incremental Cost Accounting• EUL for new homes is 45 years.
• Individual measures have EUL < 45 years. The savings and cost for these measures recur after their EUL.
• This lowers TRC.
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BOP 1 Equipment Path Energy Savings
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BOP 1 Equipment Path Incremental Cost
$-
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
Incr
emen
tal C
ost
Existing Proposed
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BOP 1 Equipment Path TRC
-
0.50
1.00
1.50
2.00
2.50
3.00
3.50
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
TRC
Existing Proposed
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BOP 1 Ducts Inside Path Energy Savings
-
1,000
2,000
3,000
4,000
5,000
6,000
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
kWh
Savi
ngs
Existing Proposed
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BOP 1 Ducts Inside Path Incremental Cost
$-
$500
$1,000
$1,500
$2,000
$2,500
$3,000
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
Incr
emen
tal C
ost
Existing Proposed
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BOP 1 Ducts Inside Path TRC
0
1
2
3
4
5
6
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
TRC
Existing Proposed
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BOP 1 Envelope Path Energy Savings
-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
kWh
Savi
ngs
Existing Proposed
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BOP 1 Envelope Path Incremental Cost
$-
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
$4,500
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
Incr
emen
tal C
ost
Existing Proposed
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BOP 1 Envelope Path TRC
0
0.5
1
1.5
2
2.5
3
CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2 CZ1 CZ2 CZ3 CZ1 CZ2 CZ1 CZ2
HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3
Gas Furnace with AC Gas Furnace, No AC Heat Pump
TRC
Existing Proposed
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BOP 2 Energy Savings
HZ1 HZ2 HZ3Zonal
-
1,000
2,000
3,000
4,000
5,000
6,000
7,000
Existing Proposed
kWh
Savi
ngs
20
BOP 2 Incremental Cost
$-
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
HZ1 HZ2 HZ3
Zonal
Incr
emen
tal C
ost
Existing Proposed
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BOP 2 TRC
-
0.5
1.0
1.5
2.0
2.5
3.0
HZ1 HZ2 HZ3
Zonal
TRC
Existing Proposed
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Sunset Date• Conversations with NW Energy Star, Oregon
Building Codes Division indicate that no upcoming code change for at least two years.
• Federal std for water heaters will necessitate a change in the DHW component (SOURCE)
• Proposed sunset date: 1 year from now. • Staff will update the DHW component.
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Proposed Decision“I __________ move that the RTF:
• Approve the three BOP1 (Equipment, Ducts Inside, and Envelope) and BOP2 (Zonal) Energy Star Home Option UES values for all Oregon climate zones,• and set the sunset date to April 30, 2015.
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Washington Energy Star Homes Measure Update
New Measure Proposal April 22nd, 2014
25Washington 2012 New Construction Code Now Active• WA 2012 residential code became active on July 2013.
• WA 2012 energy code has a set of core criteria that a builder must meet and attain 1.5 points from a set of optional criteria.
• WA 2012 code aims to transform the market by encouraging:
• Heat Pumps to be the primary electric heating system• HVAC systems to be located inside the thermal envelope
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WA 2012 Baseline Prototypes• Analysis done by Ecotope (RTF Meeting, December
2013) used as basis for prototype selection.
• Baseline prototype selected based on three criterion:• Mean Energy Consumption.• Low Incremental Cost.• Anecdotal evidence from the field.
• WA Department of Commerce, CleaResult, Ecotope Consulting were consulted in this process.
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WA 2012 Baseline Prototypes (Contd.)
Option Proposed WeightingExhaust Fan, 95 AFUE, DHW-Low Flow-Better Tank 40%Ducts Inside, DHW-Low Flow-Better Tank 40%Gas Tankless DHW 20%
Heat Pump 8.5 HSPF; DHW-Low Flow-Better Tank 100%Zonal Envelope Option; DHW-Low Flow-Better Tank 100%
Gas Furnace - CAC;Gas Furnace No AC
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Status of Current Energy Star Specifications• Current Energy Star specifications were drafted for
the WA 2009 code.• WA 2012 residential code in most cases meets, and in
some cases exceeds current Energy Star code.• Potential for savings via Energy Star as it stands are
minimal.
• NW Energy Star team intends to update the current Energy Star specifications within the next month.
• Energy Star team will develop reference design homes that would consume at least 12 % less energy than code homes.
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Staff Proposal• Deactivate current WA Energy Star Measures.
• Staff checked with WA State Dept. of Commerce (Chuck Murray), builders cannot build to 2009 code anymore.
• Staff will characterize the WA Energy Star Measures once specifications are finalized.
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Proposed Decision“I __________ move that the RTF:
• Deactivate all current WA Energy Star New Construction UES measures.
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Backup Slides• Effect of Calibration on Savings
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BOP 1 – Ducts Inside Path
0
500
1000
1500
2000
2500
3000
3500
4000
HZ1_CZ1 HZ1_CZ2 HZ1_CZ3 HZ2_CZ1 HZ2_CZ2 HZ2_CZ3 HZ3_CZ1 HZ3_CZ2 HZ3_CZ3
kWh
No Calibration Phase 1 Phase 2 Both
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BOP2 - Zonal
0
1000
2000
3000
4000
5000
6000
HZ1 HZ2 HZ3
kWh
No Calibration Phase 1 Phase 2 Both
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