applying seem updates, calibration, and measure interaction decisions to: single family...
TRANSCRIPT
Applying SEEM Updates, Calibration, and Measure Interaction Decisions to:
Single Family Weatherization and HVAC UES Measures
Regional Technical ForumJuly 15, 2014
Presentation Outline
• Measure Overview• Staff Highlighted Areas• Looking Ahead – Staff Recommendations• Measure Analysis• Results
• Proposed Decision
2
Measure Measure Specifications Heating System Measure Identifiers
Starting Point Ending Point
Attic: R0-R38 < R-7 R-38 or fill cavity
Electric Forced AirElectric Zonal
Air Source Heat PumpDuctless Heat Pump
Attic: R0-R49 < R-7 R-49
Attic: R11-R38* ≥ R-7, ≤ R-11 R-38 or fill cavity
Attic: R11-R49* ≥ R-7, ≤ R-11 R-49
Attic: R19-R38 > R-11, ≤ R-19 R-38 or fill cavity
Attic: R19-R49 > R-11, ≤ R-19 R-49
Attic: R30-R49 > R-19, ≤ R-30 R-49
Attic: R38-R49 ≤ R-38 R-49
Wall: R0-R11 No insulation Fill cavity
Floor: R0-R19 < R-11 ≥ R-19
Floor: R0-R25 < R-11 ≥ R-25
Floor: R0-R30 < R-11 ≥ R-30
Measure Overview - 4
Missing, but will add: Attic R30-R38; Floor R19-R30Intentionally removed: Attic R0-R19 (Attic R0-38 is required by specs)* This is a new measure
Measure Measure Specifications Heating System Measure Identifiers
Starting Point Ending Point
Window: Single-u30 Single Pane ≤ u-30
Electric Forced AirElectric Zonal
Air Source Heat PumpDuctless Heat Pump
Window: Double-u30 Double Pane Metal Frame
≤ u-30
Window: u35-u30 Std. Practice ≤ u-30
Window: Single-u22 Single Pane ≤ u-22
Window: Double-u22 Double Pane Metal Frame
≤ u-22
Window: u35-u22 Std. Practice ≤ u-22
Infiltration Reduction* Pre-blower door Post-blower door
ASHP Upgrade Std. Practice HSPF ≥ 9.0 ASHPFAF to ASHP Conversion Electric FAF Std. Practice ASHP eFAFZonal to DHP Conversion Electric Zonal DHP in main area eZonalASHP PTCS CC&S Std. Practice PTCS CC&S ASHPDuct Tightness Std. Practice PTCS Ducts eFAF & ASHP
Measure Overview - 5
Missing, but will add: Zonal to ASHP conversion; FAF to DHP conversion (after BPA/Ecotope proposal)
* Changed from kWh/0.1ΔACHn/ft2 to kWh/ΔCFM50
Staff Highlighted Areas• Results may not be intuitive
– It’s difficult to conceptualize the compounding effects on savings of the new version of SEEM, calibration (Phases I and II), and Option 3. These paths, chosen by the RTF over the last few years, make sense, but the results may not (at first).
• Calibration is intended to mimic results of an impact evaluation• Option 3 is intended to make savings additive and correct long-
term
– Staff has investigated many of these non-intuitive results. This has been useful QC.
• Cooling Savings– Still uncalibrated, but now cooling savings make up a large
percentage of most of the measures with heat pump heating systems.
Staff Highlights - 6
Our JourneyStaff Highlights - 7
SEEM Calibration
Phase IPhase II“Option 3”
More Data?Option 3
Uo-based
Are we there yet?
LMI, Old Calibration, Old SEEM
RTF Staff RecommendationsConclusion• Many results look reasonable, but there are some weird ones, too (e.g. very
low/negative floor insulation savings). What should be done about the weird results, if anything?– We think we’ve followed the previous decisions correctly.
Recommendations• Heating Savings – Staff recommends either
A. Accepting the proposed values as is, even though they’re weird, because they are an outcome of the decisions the RTF has already made (and because we’ve acknowledged things aren’t perfect, but close on average)
– We would still need a solution to the cooling savings issue for heat pump housesB. Pursuing a reasonable, and well-thought out solution to fix the “weird” values
– See next slide for a possible solution
• Cooling Savings – Staff is still looking for ideas…
• Measure Category – These measures should be moved to provisional or planning:• PTCS Duct Sealing
– BPA evaluation still not finished, but preliminary results cause us to question current savings.• PTCS Commissioning, Controls, and Sizing
– Need to research baseline and efficient-case (see earlier agenda item)
Recommendations - 8
Possible Solution:Tweak How Option 3 Divvies Savings
• This mostly fixes the low/negative floor insulation savings issue.– The Phase I calibration is causing much of this issue. – The calibration is a broad tool, and it looks like we’ve tried to use it
too finely.
Tweak How Option 3 Divvies Savings:
– is currently LMI savings, calibrated using Phase I and Phase II.– Instead, if we use uncalibrated values for , we’ll avoid negative
values.
Recommendations - 9
Recommendations - 10
Proposed Solution:Tweak How Option 3 Divvies Savings
5000
6000
7000
8000
9000
10000
11000
12000
0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24
Hea
ting
Ener
gy U
se E
stim
ate
(kw
h/yr
)
Uo (both)
2200c Prototype; HZ1; Heat Pump
Floor SEEMAttic SEEMWall SEEMInfiltration SEEMFloor Phase IAttic Phase IWall Phase IInfiltration Phase I
Recommendations - 11
• Part “I” on its own, may cause heat pump conversion savings to dominate the “divvying up” (uncalibrated SEEM 69/64 heat pump conversion savings can be huge)
• Staff will double-check that this is not an issue.
Proposed Solution:Tweak How Option 3 Divvies Savings
WorkbooksAnalysis - 13
Savings Analysis Workbook:
“SEEMruns_SingleFamilyExistingHVACandWeatherization_all.xlsm”
Wx UES Measure Workbook:
“ResSFWx_v3_Proposed.xlsm”
HVAC UES Measure Workbook:
“ResSFHVAC_v1_Proposed.xlsm”
PTCS Ducts SF Measure Workbook (provisional):
“tbd.xlsm”
PTCS CC&S Measure Workbook (provisional):
“tbd.xlsm”
Key Drivers of Savings Calculations• SEEM
– Updated with improved infiltration modeling• Phase I Calibration
– Aligns SEEM heating energy use output with RBSA houses with well-known heating energy use
• Phase II Calibration– Aligns SEEM heating energy use with program-eligible
houses, making adjustments for partially occupied and unoccupied houses, non-electric fuels, etc.
• Measure Interactions: Option 3– Modifies the “last-measure-in” method to take into account
starting point of RBSA houses. This allows measures to be additive.
• Heating system type is a measure identifier
Analysis - 14
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35
Adju
stm
ent F
acto
r
Uo (both)
SEEM Phase 1 Calibration Factors
eFAF or Zonal Heating Zone 1
eFAF or Zonal Heating Zone 2
eFAF or Zonal Heating Zone 3
HP or Gas FAF Heating Zone 1
HP or Gas FAF Heating Zone 2
HP or Gas FAF Heating Zone 3
DHP Heating Zone 1
DHP Heating Zone 2
DHP Heating Zone 3
Analysis - 15
Adjustment factors are to be applied to the heating energy use output of RTF standard SEEM runs (69F/64F).
Phase II Adjustments
• These adjustment factors are applied to the Phase I-adjusted heating energy use to determine a) heating energy use, and b) non-electric heat consumption (in kWh/yr).
Analysis - 16
1 75% 15%2 72% 13%3 72% 13%1 76% 13%2 72% 13%3 85% 0%
Electric Heating Adjustment
Non-Electric Heat Adjustment
eFAF, Zonal, HP, or Gas FAF
DHP
EquipmentHeating
Zone
Measure Interactions - Option 3
• Methodology– Do the following for each characteristic scenario* in the RBSA, then weight
measure results:• Calculate “Total Actual Savings” where baseline = characteristic scenario,
efficient-case = full measure package.• For each individual measure in the characteristic scenario, calculate “LMI
Savings” where baseline = full measure package without the measure, efficient-case = full measure package.
• Then, calculate the characteristic scenario savings for the measure (example: attics):
* Houses in the RBSA were binned into ~100 unique “characteristic scenarios”. Each characteristic scenario represents the efficiency of the house (Attic, Wall, and Floor insulation, Window efficiency, and Heating system). Many houses in the RBSA share the same characteristic scenario definition, this simplifies the analysis.
Analysis - 17
Measure Interactions - Option 3
Full Measure Package(Defining efficiency levels)Attic: R-38Walls: R-11Floors: R-25Windows: u-0.30Infiltration: 0.35 ACHnDuct Tightness: PTCSDuct Insulation: ExistingHeat Pump HSPF: 9.0HP CC&S: PTCS
Analysis - 18
Limit on Full Measure Package(Maximum efficiency of starting point)
Attic: R-19Walls: R-0Floors: R-0Windows: Double Pane Metal FrameInfiltration: 0.35 ACHnDuct Tightness: n/aDuct Insulation: n/aHeat Pump HSPF: n/aHP CC&S: n/a
The analysis stopped short of bringing all RBSA houses up to the full measure package level – houses with moderate existing levels of insulation did not receive the full measure package levels (example: Existing R30 in the attics remained).
Heating System as Identifier – Savings LogicAnalysis - 19
• Heat Pump Logic, Example using fake numbersFAF (without HP in package)
LMI LMI * Ratio
Atttic 2700 2500
Wall 1800 1667
Floor 900 833
Actual Total Savings 5000
Ratio: Actual/sum(LMI) 0.93
HP
LMI LMI * Ratio
Atttic 1500 1250
Wall 1000 833
Floor 500 417
Actual Total Savings 2500
Ratio: Actual/sum(LMI) 0.83
FAF (with HP in package)
LMI LMI * Ratio
Atttic 1500 2100
Wall 1000 1400
Floor 500 700
HP conversion 2000 2800
Actual Total Savings 7000
Ratio: Actual/sum(LMI) 1.4
Measure Heating System Savings
Attic FAF 2500
Wall FAF 1667
Floor FAF 833
HP Conv FAF 2800
Attic ASHP 1250
Wall ASHP 833
Floor ASHP 417
Savings Table
Other Things to Note
• Measures with DHP heating systems use characteristic scenarios for zonal houses.– This is because there aren’t enough DHP houses
in the RBSA to determine characteristic scenarios.
• Analysis excludes electronic t-stats (zonal houses) and GSHP’s.
Analysis - 20
-
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Attic Insulation - Heating Zone 1 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
23
-
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Attic Insulation - Heating Zone 2 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
24
-
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Attic:
R0-R
38Atti
c:R0
-R49
Attic:
R11-
R38
Attic:
R11-
R49
Attic:
R19-
R38
Attic:
R19-
R49
Attic:
R30-
R49
Attic:
R38-
R49
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs
per U
nit (
kWh/
sq.ft
. per
yea
r)Attic Insulation - Heating Zone 3 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
25
-
0.50
1.00
1.50
2.00
2.50
3.00
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Wall & Floor Insulation- Heating Zone 1 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
27
28
5000
6000
7000
8000
9000
10000
11000
12000
0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24
Hea
ting
Ener
gy U
se E
stim
ate
(kw
h/yr
)
Uo (both)
2200c Prototype; HZ1; Heat Pump
Floor SEEMAttic SEEMWall SEEMInfiltration SEEMFloor Phase IAttic Phase IWall Phase IInfiltration Phase I
(0.50)
-
0.50
1.00
1.50
2.00
2.50
3.00
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Wall & Floor Insulation- Heating Zone 2 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
29
(0.50)
-
0.50
1.00
1.50
2.00
2.50
3.00
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Wal
l:R0-
R11
Floo
r:R0-
R19
Floo
r:R0-
R25
Floo
r:R0-
R30
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs
per U
nit (
kWh/
sq.ft
. per
yea
r)Wall & Floor Insulation- Heating Zone 3 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
30
-
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Windows - Heating Zone 1 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
32
-
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs p
er U
nit (
kWh/
sq.ft
. per
yea
r)Windows - Heating Zone 2 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
33
-
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Win
dow
:Sin
gle-
u30
Win
dow
:Dou
ble-
u30
Win
dow
:u35
-u30
Win
dow
:Sin
gle-
u22
Win
dow
:Dou
ble-
u22
Win
dow
:u35
-u22
Electric FAF Electric Zonal Heat Pump DHP
Savi
ngs
per U
nit (
kWh/
sq.ft
. per
yea
r)Windows - Heating Zone 3 Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
34
-
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
ElectricFAF
ElectricZonal
HeatPump
DHP ElectricFAF
ElectricZonal
HeatPump
DHP ElectricFAF
ElectricZonal
HeatPump
DHP
Heating Zone 1 Heating Zone 2 Heating Zone 3
Savi
ngs
per U
nit (
kWh/
ΔCFM
50pe
r yea
r)Infiltration Reduction Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
36
-
1,000
2,000
3,000
4,000
5,000
6,000
Heat
Pum
p:FA
F-8.
5HSP
F
Heat
Pum
p:Zo
nal-D
HP
HP C
C&S:
Stan
dard
Prac
tice-
PTCS
Heat
Pum
p:8.
5HSP
F-9.
0HSP
F
PTCS
Duc
t Sea
ling
(FAF
)
PTCS
Duc
t Sea
ling
(HP)
Heat
Pum
p:FA
F-8.
5HSP
F
Heat
Pum
p:Zo
nal-D
HP
HP C
C&S:
Stan
dard
Prac
tice-
PTCS
Heat
Pum
p:8.
5HSP
F-9.
0HSP
F
PTCS
Duc
t Sea
ling
(FAF
)
PTCS
Duc
t Sea
ling
(HP)
Heat
Pum
p:FA
F-8.
5HSP
F
Heat
Pum
p:Zo
nal-D
HP
HP C
C&S:
Stan
dard
Prac
tice-
PTCS
Heat
Pum
p:8.
5HSP
F-9.
0HSP
F
PTCS
Duc
t Sea
ling
(FAF
)
PTCS
Duc
t Sea
ling
(HP)
Heating Zone 1 Heating Zone 2 Heating Zone 3
Savi
ngs p
er H
ouse
(kW
h/pe
r yea
r)Duct Sealing & Heat Pump Measures Phase 1
Phase 1 & 2Phase 1 & 2 and Option 3 (Proposed)Existing Values
37
Cooling Savings
• Historically, cooling savings have been– Uncalibrated– A small fraction of heating savings
• Now, cooling savings are– Still uncalibrated– Still a small fraction of heating savings
• EXCEPT: Heat pumps• The adjustments that caused heat pump savings to fall
brought them closer to the unadjusted cooling savings.
38
39Cooling Savings as Percentage of total (heating + cooling) savings
Measure
Elec. FAF
Elec. Zonal
Heat Pump DHP
Elec. FAF
Elec. Zonal
Heat Pump DHP
Elec. FAF
Elec. Zonal
Heat Pump DHP
Attic:R0-R38 5% 3% 52% 12% 4% 2% 36% 10% 2% 1% 18% 4%Attic:R0-R49 5% 3% 51% 12% 4% 2% 36% 10% 2% 1% 18% 4%Attic:R11-R38 2% 2% 34% 9% 3% 2% 35% 10% 2% 1% 22% 4%Attic:R11-R49 2% 2% 34% 9% 3% 2% 35% 10% 2% 1% 22% 4%Attic:R19-R38 2% 1% 32% 8% 3% 2% 34% 9% 2% 1% 22% 4%Attic:R19-R49 2% 1% 31% 8% 3% 2% 34% 9% 1% 1% 21% 4%Attic:R30-R49 2% 1% 29% 7% 2% 1% 32% 8% 1% 1% 19% 4%Attic:R38-R49 2% 1% 30% 7% 2% 1% 33% 8% 1% 1% 20% 3%Wall:R0-R11 1% 0% 12% 2% 1% 0% 12% 2% 0% 0% 3% 0%Floor:R0-R19 -2% -1% 260% -6% -4% -2% 54% -8% -2% -1% 132% -4%Floor:R0-R25 -2% -1% 491% -6% -3% -1% 64% -7% -2% -1% 201% -4%Floor:R0-R30 -2% -1% 981% -6% -3% -1% 72% -7% -2% -1% 292% -4%Window:Single-u30 2% 1% 21% 6% 2% 1% 21% 6% 1% 1% 11% 2%Window:Double-u30 5% 3% 39% 13% 5% 3% 35% 14% 3% 2% 21% 7%Window:u35-u30 1% 0% 12% 3% 1% 1% 12% 3% 0% 0% 4% 1%Window:Single-u22 2% 1% 20% 6% 2% 1% 20% 6% 1% 0% 10% 2%Window:Double-u22 4% 2% 36% 12% 4% 3% 32% 13% 2% 1% 19% 6%Window:u35-u22 1% 1% 16% 4% 1% 1% 17% 4% 1% 0% 7% 1%Infiltration:cfm50 reduction 0% 0% 6% 0% 1% 0% 9% 1% 0% 0% -1% -1%Heat Pump:8.5HSPF-9.0HSPF 27% 39% 26%Heat Pump:FAF-8.5HSPF -30% -54% -24%Heat Pump:Zonal-DHP -13% -17% -22%HP CC&S:StandardPractice-PTCS 0% 0% 0%DuctTightness:StandardPractice-PTCS2% 14% 2% 12% 1% 4%
Heating Zone 1 Heating Zone 2 Heating Zone 3
41
$-
$0.20
$0.40
$0.60
$0.80
$1.00
$1.20
$1.40
$1.60
ATTICR0 -R38
ATTICR0 -R49
ATTICR11 -R38
ATTICR11 -R49
ATTICR19 -R38
ATTICR19 -R49
ATTICR30 -R49
ATTICR38 -R49
WALLR0 -R11
FLOORR0 -R19
FLOORR0 -R25
FLOORR0 -R30
Mea
sure
Cos
t per
Squ
are
Foot
Measure Cost - Attic, Wall, FloorProposed Existing
The cost for infiltration reduction remains unchanged: $0.073/CFM50.
42
$-
$5.00
$10.00
$15.00
$20.00
$25.00
$30.00
Window:Single -
u30
Window:Double -
u30
Window:u35 - u30
Window:Single -
u22
Window:Double -
u22
Window:u35 - u22
Mea
sure
Cos
t per
Squ
are
Foot
Measure Cost - WindowsProposed Existing
$81 $51 $-
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
$4,500
Heat Pump:8.5 to 9 HSPF
Heat Pump:FAF w/CAC to
HP
Heat Pump:FAF w/o CAC
to HP
HP CC&S -PTCS
Duct Sealing -PTCS
Heat Pump:Zonal - DHP(no change)
Mea
sure
Cos
tMeasure Cost - Heat Pumps and Ducts
Proposed Cost Existing Cost
43
45Proposed Measure Cost-EffectivenessGreen=Cost-effective; Red=Not Cost-effective (Values are TRC B/C Ratio’s)
Elec. FAF
Elec. Zonal
Heat Pump
DHPElec. FAF
Elec. Zonal
Heat Pump
DHPElec. FAF
Elec. Zonal
Heat Pump
DHP
ATTIC R0 - R38 4.1 2.9 2 4.3 5.9 4.6 3.3 6.2 7.8 6.3 4.6 8.3
ATTIC R0 - R49 3.7 2.6 1.8 3.9 5.3 4.1 2.9 5.5 7 5.6 4.1 7.4
ATTIC R11 - R38 1.5 1 0.5 1 1.4 1 0.6 1.1 1.4 1 0.6 1.2
ATTIC R11 - R49 1.4 0.9 0.5 0.9 1.3 0.9 0.6 1 1.3 1 0.6 1.2
ATTIC R19 - R38 0.7 0.5 0.3 0.5 0.7 0.5 0.3 0.5 0.7 0.5 0.3 0.6
ATTIC R19 - R49 0.7 0.6 0.3 0.5 0.7 0.5 0.3 0.6 0.7 0.5 0.3 0.6
ATTIC R30 - R49 0.4 0.3 0.1 0.3 0.4 0.3 0.1 0.3 0.3 0.3 0.1 0.3
ATTIC R38 - R49 0.2 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.1
WALL R0 - R11 2.7 1.9 0.9 1.9 2.7 2 1.1 2.2 2.8 2.4 1.6 2.7
FLOOR R0 - R19 1.1 1.2 0 1.1 0.7 0.9 0 1 1 1.2 0 1.5
FLOOR R0 - R25 1.3 1.3 0 1.2 0.8 1 0 1.1 1.2 1.4 0 1.6
FLOOR R0 - R30 1.4 1.4 0 1.3 0.9 1.1 0 1.2 1.3 1.5 0 1.7
Window : Single - u30 1.3 0.7 0.5 0.8 1.3 0.9 0.6 0.9 1.4 1 0.7 1.2
Window : Double - u30 0.5 0.4 0.3 0.5 0.6 0.4 0.4 0.5 0.7 0.5 0.5 0.6
Window : u35 - u30 1 0.7 0.4 0.6 1.1 0.8 0.5 0.8 1.2 0.9 0.6 0.9
Window : Single - u22 1.2 0.7 0.5 0.7 1.2 0.8 0.6 0.8 1.2 0.9 0.6 1.1
Window : Double - u22 0.5 0.4 0.3 0.4 0.5 0.4 0.4 0.5 0.6 0.5 0.5 0.6
Window : u35 - u22 0.7 0.5 0.2 0.4 0.7 0.5 0.3 0.5 0.7 0.6 0.3 0.6
CFM 50 Reduction 11.2 10.2 3.7 8.9 11.8 11.3 4.5 10.5 10.8 11 4.6 11.7
Heat Pump: 8.5 to 9 HSPF NA NA 2.3 NA NA NA 1.7 NA NA NA 1.4 NA
Heat Pump: FAF w /CAC to HP 2 NA NA NA 1.7 NA NA NA 1.4 NA NA NA
HP CC&S - PTCS NA NA 2.8 NA NA NA 4.4 NA NA NA 5.4 NA
Duct Sealing - PTCS 2.1 NA 1.4 NA 2.8 NA 2.3 NA 3.2 NA 2.8 NA
MeasureHeating Zone 1 Heating Zone 2 Heating Zone 3
46
Measure HZ1 HZ2 HZ3
Heat Pump: FAF w /o CAC to HP (CZ1) 1 0.8 0.7
Heat Pump: FAF w /o CAC to HP (CZ2) 0.9 0.7 0.5
Heat Pump: FAF w /o CAC to HP (CZ3) 0.7 0.5 0.3
Heat Pump: Zonal - DHP (CZ1) 0.9 0.9 0.7
Heat Pump: Zonal - DHP (CZ2) 1 1 0.8
Heat Pump: Zonal - DHP (CZ3) 1.1 1.1 0.9
Proposed Measure Cost-EffectivenessGreen=Cost-effective; Red=Not Cost-effective (Values are TRC B/C Ratio’s)
“Heat Pump: FAF w/o CAC to HP” measures are currently run in ProCost as “retrofit” measures. However, their costs make them look more like a “lost opportunity measure”:
Measure Cost (w/o CAC) = Heat Pump Installation Cost – FAF Replacement CostMeasure Cost (w/CAC) = Heat Pump Installation Cost – FAF Replacement Cost–CAC Cost
Should they be run as a “lost-opportunity” measure with the current cost structure?
Or, should they be run as a “retrofit” with an estimated lifetime cost structure (full capital cost today, avoided FAF and CAC replacement cost at some time in the future)?
47Changes to Cost-effectivenessMeasure
Elec. FAF
Elec. Zonal
Heat Pump
Elec. FAF
Elec. Zonal
Heat Pump
Elec. FAF
Elec. Zonal
Heat Pump
ATTIC R0 - R38 Same Same Same Same Same Same Same Same Same
ATTIC R0 - R49 Same Same Same Same Same Same Same Same Same
ATTIC R11 - R38 New New New New New New New New New
ATTIC R11 - R49 New New New New New New New New New
ATTIC R19 - R38 Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n
ATTIC R19 - R49 Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n
ATTIC R30 - R49 Dow n Dow n Same Dow n Dow n Dow n Dow n Dow n Dow n
ATTIC R38 - R49 Dow n Dow n Same Dow n Dow n Dow n Dow n Dow n Dow n
WALL R0 - R11 Same Same Dow n Same Same Same Same Same Same
FLOOR R0 - R19 Same Same Dow n Dow n Dow n Dow n Same Same Dow n
FLOOR R0 - R25 New New New New New New New New New
FLOOR R0 - R30 Same Same Dow n Dow n Same Dow n Same Same Dow n
Window: Single - u30 Same Dow n Dow n Same Dow n Dow n Same Same Dow n
Window: Double - u30 Dow n Dow n Same Dow n Dow n Dow n Dow n Dow n Dow n
Window: u35 - u30 Same Dow n Dow n Same Dow n Dow n Same Dow n Dow n
Window: Single - u22 Same Dow n Dow n Same Dow n Dow n Same Dow n Dow n
Window: Double - u22 Dow n Dow n Same Dow n Dow n Dow n Dow n Dow n Dow n
Window: u35 - u22 Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n Dow n
CFM 50 Reduction Same Same Same Same Same Same Same Same Same
Heat Pump: 8.5 to 9 HSPF New New Same New New Same New New Same
Heat Pump: FAF to 9 HSPF Same New New Same New New Same New New
HP CC&S - PTCS New New Same New New Same New New Same
Duct Sealing - PTCS Same New Same Same New Same Same New Same
Heating Zone 1 Heating Zone 2 Heating Zone 3
48Changes to TRC B/C Ratio’s
Measure HZ1 HZ2 HZ3
Heat Pump: FAF w /o CAC to HP (CZ1) Same Dow n Dow n
Heat Pump: FAF w /o CAC to HP (CZ2) Dow n Dow n Dow n
Heat Pump: FAF w /o CAC to HP (CZ3) Dow n Dow n Dow n
Heat Pump: Zonal - DHP (CZ1) Dow n Dow n Same
Heat Pump: Zonal - DHP (CZ2) Same Same Same
Heat Pump: Zonal - DHP (CZ3) Same Same Dow n
49
Discussion on Cooling
• Issue: The uncalibrated cooling savings are a significant portion of measure savings for measures with heat pumps.
• Ideas?
Decision“I ____ move the RTF, for the Single Family Weatherization and HVAC measures,
• For heating savings (Pick One): • Adopt as proposed,
• Pursue the tweak to Option 3 using uncalibrated LMI savings, OR
• Pursue the following alternative path ____.
• Do the following for cooling savings _______, • For ASHP conversion measures (Pick One):
– Set costs and avoided electric costs using “lost opportunity” assumptions,
– Set costs and avoided electric costs using “retrofit” assumptions, OR
– Continue using “lost opportunity” costs and “retrofit” avoided electric costs.
• Change PTCS Duct sealing measures’ status to Under Review.
50
52
5000
6000
7000
8000
9000
10000
11000
12000
0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24
Hea
ting
Ener
gy U
se E
stim
ate
(kw
h/yr
)
Uo (both)
2200c Prototype; HZ1; Heat Pump
Floor SEEMAttic SEEMWall SEEMInfiltration SEEMFloor Phase IAttic Phase IWall Phase IInfiltration Phase I
53
0.00
0.25
0.50
0.75
1.00
1.25
1.50
0
5,000
10,000
15,000
20,000
25,000
30,000
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45
Adju
stm
ent F
acto
r Val
ue
Hea
ting
Ener
gy U
se (k
Wh/
yr)
House Uo (includes infiltration)
Zonal vs. DHP 1344 prototype in HZ1 Measures: R-0 to fully insulated Attics, Walls, Floors. Single to U-30 Windows. Infiiltration Reduction
DHP SEEM
DHP Phase 1
Zonal SEEM
Zonal Phase 1
Zonal Factor
DHP Factor