Transcript High Performance Manufactured Homes Provisional UES Proposal Presentation to the Regional Technical Forum May 15, 2012 Project Sponsor: Bonneville Power Administration Presentation by: Ben Larson, Ecotope and Tom Hewes,

High Performance Manufactured Homes
Provisional UES Proposal Presentation
to the Regional Technical Forum
May 15, 2012
Project Sponsor:
Bonneville Power Administration
Presentation by:
Ben Larson, Ecotope
and
Tom Hewes, Northwest Energy Works
UES Analysis by:
B. Larson
RTF Staff Review by: A. Hadley
Presentation by:
B. Larson, T. Hewes
Overview / Review
• Measure first presented at last RTF meeting
(4/17/2012)
• Discussed baseline, energy use / savings, and
costs
• Lacked complete plan to move measure from
provisional to active status
– This presentation reviews last month’s and
concludes with a plan
2
Measure Summary
• Measure name: High Performance Manufactured Homes
(HPMH)
• Measure sponsor: Bonneville Power Administration
• Measure description:
– Construction of new, manufactured homes in accordance with
the High Performance Manufactured Home Specification
Measure type: UES
•
•
•
•
•
Requesting Status: Approved
Change in measure status: Yes (proposed  provisional)
Change in measure savings: No
Change in measure cost effectiveness: No
Other or follow-on work for RTF: No
3
Review: Uo Baseline Specifications
• “HUD+” is the current NW baseline based on current market
research by WSU and NEW
– The “HUD+” baseline is a better performer than the Federal standard
due to decades of market transformation in the PNW
• All costs and savings are made relative to the “HUD+”
baseline
Type
HUD
“HUD+”
NEEM
HPMH
Northwest Specific Uo Values
Comments
Federal Maximum
Northwest Baseline
Northwest Energy Efficient Manufactured Home
High Performance Manufactured Home (Super NEEM)
Uo
0.079
0.065
0.054
0.040
4
Manufactured Homes Specifications Review
Units
Baseline
"HUD+"
NEEM
Envelope
Ceiling
R-Value
R22
R38
Wall
R-Value
R11 -- R21
R21
U-Value
% of CFA
U-Value
R-Value
ACH 50
Exhaust Fan
Btu/hr-ft2-°F
0.4
12%
0.2
R19
4.8
Market Base
0.065
0.34
12%
0.2
R33
3.9
EnergyStar
0.054
Electric FAF
Electric FAF
% system flow
% system flow
none
12.5%
None - Interior
none
5%
None - Interior
DHP HSPF 10 &
Wall Heaters
DHP SEER 20
No Ducts
No Ducts
EF
gpm
0.9 EF
2.5
0.93 EF
2.5
HPWH
1.75
W/ft2
1.4
1.4
0.6
Market Base
Market Base
Market Base
Market Base
EnergyStar
EnergyStar
Component
Window U-Value
Glazing %
Door
Floor
Infiltration
Ventilation
Uo
HVAC
Heating System
Cooling System
Supply Duct Leakage
Return Duct Leakage
DHW
Water Heater
Shower Head
Lighting
LPD
Appliances
Dishwasher
Refrigerator
HPMH
"Super NEEM"
R45
R21 + R5 Foam
Sheathing
0.22
12%
0.2
R38
3.0
EnergyStar
0.040
5
UES Analysis Summary
Refer to Measure Workbook
Analysis Approach (1)
• Lighting calculated with LPD method
• Appliance savings from existing RTF measures
• Calibrated SEEM runs for estimating
– heating, cooling, ventilation, and DHW
• DHW energy use
– Parallel analysis to HPWH presented in 2011
Analysis Approach (2)
• Heating, cooling, ventilation, and DHW energy use calculated
with SEEM
– DHP Modeling methodology from NEEA Ductless Heat Pump Impact
& Process Evaluation: Field Metering Report
• Field findings: DHP heats differing house fraction based on climate
– HZ1: 74%,
HZ2: 63%,
HZ3: 45%
• Calibrated SEEM to pre/post DHP installation periods at 91 houses
– Unique simulations created for each house based on detailed audits
– Note: energy uses here not reflective of DHP program savings – they are only
applicable here as a calibration exercise
Method
Pre-Installation Billing Data
Pre-Installation SEEM 66.8°F Setpoint
Post-Installation Metered Data
Post-Installation SEEM 69.5°F Setpoint
Heating Energy Use (kWh/yr)
Mean
SD
9347
3892
9331
4135
6484
3894
6466
3151
N
91
91
91
91
– HPWH Modeling based on SEEM simulated annual crawl space
temperature profile and HPWH COP map
• HPWH installed in sound-attenuated, buffered closet which draws air from crawl
space and exhausts outdoors
8
Modeled Crawl Space Air Temperature
2500
2000
1500
– 4.5 ACH crawl (350 cfm
continuous)
– likely worst case airflow and
temperature – the air in the
closet will be warmer due to
tank heat loss
– R38 floor, no ducts
1000
500
0
12 17 22 27 32 37 42 47 52 57 62 67 72 77 82
Temperature Bin Centers (F)
SEA
SPO
KAL
9
Hours in Bin
• Crawl space is source of
air for HPWH closet
• SEEM model of 1568 ft2
HPMH
Annual Crawl Space Air Temperature
Measure Cost by Category
Category
Envelope
Air Sealing &
Ventilation
HVAC System
Domestic Hot
Water
Lighting
Appliances
Total
Notes
2011 $s 2006 $s
Majority from Walls and Windows
$
Whole House Exhaust Fan
$
DHP & Resistance Wall Htrs.
(less cost of furnace and duct system)
4,277 $ 3,816
Measure Life Annual O&M
(yrs)
(2006 $s)
45
$
-
45
20
$
-
$
4,701 $ 4,194
20
$
-
Heat Pump Water Heater
$
1,110 $
991
15
$
26
Compact and Linear Flourescents
Dishwasher & Refrigerator
$
117 $ 105
$
62 $
55
$ 10,318 $ 9,205
8
16
$
$
(13)
-
50 $
• Sunset Criteria:
– Measure shall sunset at the end of 2014, at which time the
lighting savings UES component of the measure shall be
reevaluated against the changing federal lighting standards.
10
Results
Manufactered Home Annual Energy Savings (Prototype Weighted)
12,000
Savings (kWh/yr)
10,000
8,000
6,000
4,000
2,000
0
CZ1
HZ1
HPMH to Baseline 8,168
CZ2
HZ1
8,066
CZ3
HZ1
7,902
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
HZ2
HZ2
HZ2
HZ3
HZ3
HZ3
10,358 10,261 10,102 11,411 11,323 11,179
B/C Ratio for HPMH over Baseline
3.0
2.0
1.0
0.0
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
HZ1
HZ1
HZ1
HZ2
HZ2
HZ2
HZ3
HZ3
HZ3
12
Energy Use, Savings, and B/C Ratio
Climates
Heating Cooling
HZ1
HZ1
HZ1
HZ2
HZ2
HZ2
HZ3
HZ3
HZ3
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
Total Annual Energy Use (kWh/yr)
Savings (kWh/yr)
Baseline
HPMH
NEEM
HPMH to Baseline
"HUD+"
"Super NEEM"
15,836
15,836
15,836
19,597
19,597
19,597
22,558
22,558
22,558
12,957
12,957
12,957
15,567
15,567
15,567
17,570
17,570
17,570
7,668
7,771
7,935
9,239
9,336
9,495
11,147
11,235
11,380
8,168
8,066
7,902
10,358
10,261
10,102
11,411
11,323
11,179
B/C
Ratio
(yrs)
Measure
Life
1.9
1.8
1.8
2.3
2.3
2.3
2.6
2.6
2.5
37
37
36
39
39
38
39
39
39
13
Manufactured Home Total Energy Use (Prototype Weighted)
Total Annual Energy Use (kWh/yr)
24,000
22,000
20,000
18,000
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
CZ1
CZ2
CZ3
HZ1
HZ1
HZ1
HZ2
HZ2
HZ2
HZ3
HZ3
HZ3
Baseline
"HUD+"
15,836
15,836
15,836
19,597
19,597
19,597
22,558
22,558
22,558
NEEM
12,957
12,957
12,957
15,567
15,567
15,567
17,570
17,570
17,570
HPMH
"Super NEEM"
7,668
7,771
7,935
9,239
9,336
9,495
11,147
11,235
11,380
14
Energy Use by Load
House Energy Use By Category
18000
16000
14000
12000
10000
HVAC
8000
DHW
6000
Lights
4000
MELs
2000
CZ2
CZ2
CZ2
HZ1
HZ2
HZ3
HPMH
NEEM
Baseline
HPMH
NEEM
Baseline
0
HPMH
wall sheathing,
triple-glazed windows,
DHPs,
HPWH, and
lighting improvements
20000
NEEM
•
•
•
•
•
22000
Baseline
– Big savings from
24000
Energy Use (kWh/yr)
• Significant reductions in
space heating, water
heating, and lighting
over both “HUD+”
baseline and NEEM.
15
Moving from Provisional to Active Status
• Open analytical questions include DHP and HPWH savings
– Shell, lighting, and appliance all use previously approved analyses
– The RTF and other regional organizations are already pursuing
questions related to DHP (due soon) & HPWH (due a bit later) savings
• Efforts should result in enough information to model DHPs and HPWHs in
manufactured houses
– Special question regarding HPWH inlet air temperature –
• air drawn from crawlspace into HPWH closet and then exhausted outside
• Proposed plan to measure temperature at 10 sites:
– crawl space, outside, & HPWH closet temperature
– select sites across heating zones
– measurements will inform inlet temperature for modeling
• After DHP & HPWH analyses have been resolved; HPWH inlet
air T measured; and Federal Lighting standards updated, the
measure will be revised and moved to active status.
16
17
Motion for Approval
“I _________ move that the RTF approve the
UES for High Performance Manufactured
Homes with provisional status which will
sunset at the end of 2014.”
18
Contacts
• Northwest Energy Works
Tom Hewes
[email protected]
888.370.3277 x101
Brady Peaks
[email protected]
888.370.3277 x102
• Bonneville Power Administration
Mark Johnson
[email protected]
503.230.7669
• Ecotope
Ben Larson
[email protected]
206.322.3753 x207
19
Extras Follow
20
HPWH COP versus Ambient Temperature
Tier 1, <= 55 gal
Tier 1 > 55 gal
Tier 2 (both sizes)
3.00
2.50
COP
2.00
1.50
1.00
0.50
0.00
27
32
37
42
47
52
57
62
Ambient Temperature (deg F)
67
72
77
82
21
SEEM Modeled:
- 4.5 ACH in Crawl
- HPMH Spec Floor
(no ducts, R38)
Crawl Space Air Temperature (F)
100
90
80
70
60
50
Seattle
40
Spokane
30
Kalispell
20
10
0
0
730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760
Hour of Year
TMY3 Data:
Outside Air Temperature (F)
100
90
80
70
60
50
Seattle
40
Spokane
30
Kalispell
20
10
0
0
730 1460 2190 2920 3650 4380 5110 5840 6570 7300 8030 8760
Hour of Year
22