self-report cphc ceus...reference area – euis are not directly comparable! •occupancy assumption...
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Course Approved for CPHC® Continuing Education Credits
REMINDERSELF-REPORT CPHC CEUs
Self-report link:www.phius.org/cphc/self-reportEnter verification code: 61704
Earn 1 CPHC CEUs
©2017 Passive House Institute US | PHIUS 2
Second and Delaware, Kansas City, MO
PHIUS+ TRENDS FOR 2017
95% of total certified and pre-certified passive building construction in NA
3© 2017 PHIUS
Source: www.phius.org
4©2017 Passive House Institute US | PHIUS
PHIUS MULTIFAMILY RESOURCE CENTER
5©2017 Passive House Institute US | PHIUS
PHIUS MULTIFAMILY RESOURCE CENTER
DESIGN &VRIFICATION TOOLS, MODELING PROTOCOLS
WHOLE BUILDING ENERGY BALANCE
7© 2017 PHIUS
PHPPWUFI® Passive
WUFI® Plus
Demands, Peaks, Site & Primary EnergyAnnual Demand [kBTU/yr.ft2]: Space conditioning energy consumed over the course of the year, delivered by the equipment to the space.
Peak Load [BTU/hr.ft2]: Space conditioning requirement during the peak climate conditions (average over the worst 24 hours). Determines the size of the mechanical system.
Site Energy [kWh/person.yr] OR [kBTU/yr.ft2]: Total energy consumed over the course of the year, including space conditioning, hot water, plug loads, lighting, appliances, systems, etc. (Excludes electrical vehicle charging energy, and ligthing energy specific to vehicle parking areas)*No requirement for PHIUS+ Certification
Source (Primary) Energy [kWh/person.yr] OR [kBTU/yr.ft2]: Site energy as described above, multiplied by the source/primary energy factor for the specific fuel type used. Ex: Electricity has a PE factor of 3.16 kWh/kWh (generation at the source vs use on site)
8
TERMINOLOGY
©2017 Passive House Institute US | PHIUS 8
EUROPEAN PASSIVHAUS CRITERIA
©2017 Passive House Institute US | 9
(+ allowancefor latent)or
PHIUS+2015:CLIMATE SPECIFIC DESIGN
©2017 Passive House Institute US | 10
Graph Courtesy of Global Buildings Performance Network
©2016 Passive House Institute US | 11
PHIUS+ 2015 PASSIVE BUILDING CRITERIA
AND
NEW STANDARDS IDENTIFY US ECONOMIC OPTIMUM TAKING PV COST INTO ACCOUNT
10 W/m² design
15 kWh/m2∙yr
12© 2016 PHIUS
http://www.nrel.gov/docs/fy15osti/64278.pdf15 kWh/m2∙yr
PASSIVE STANDARDS IN VARYING CLIMATES
CLIMATE SPECIFIC METRICS
©2017 Passive House Institute US | PHIUS 13
Internal Gains, TFA and iCFA, Occupancy & MELsPHIUS+2015 –
• 80% of RESNET internal gain assumptions
• Interior conditioned floor area (iCFA) energy reference area – EUIs are not directly comparable!
• Occupancy calculated bedrooms +1
• Different MEL and lighting assumptions
• Source EUI – based on US conversion factors – not directly comparable! (3.16 kWh/kWh for electricity)
14
CERTIFICATION PROTOCOL DIFFERENCES
©2016 Passive House Institute US | PHIUS 14
PHI –
• Unrealistically low internal gain default assumptions
• Treated Floor Area (TFA) energy reference area – EUIs are not directly comparable!
• Occupancy assumption by fixed square foot per person
• Different MEL and lighting assumptions
• Source EUI – based on German conversion factors – not directly comparable! (2.6 kWh/kWh for electricity)
Three Case Studies
Uptown Lofts Knickerbocker Commons
Orchards at Orenco Phase 1
Location Pittsburgh, PA Brooklyn, NY Hillsboro, OR
Square Footage (iCFA)
2,3994 ft2 31,903 ft2 48,035 ft2
Number of Units 24 24 57
Modeled Occupancy 27 (PHIUS+)48 (PHIUS+ 2015)
72 (PHIUS+)72 (PHIUS+ 2015)
113 (PHIUS+)131 (PHIUS+ 2015)
PHIUS+ Project # 1188 1274 1203
Three Case Studies
Uptown Lofts Knickerbocker Commons
Orchards at Orenco Phase 1
Climate Zone 4A 4A 4C
Location Pittsburgh, PA Brooklyn, NY Hillsboro, OR
*Annual Heating demand target (kBtu/sf)
4.5 4.6 5.1
*Annual Cooling demand target (kBtu/sf)
5.4 3.9 1
*Peak Heating load (Btu/sf) 4.2 3.9 3.7
*Peak Cooling load (Btu/sf) 4.7 4.2 3.9
*PHIUS+ 2015 Climate Specific Targets
UptownLofts
Things to keep in mind
• Site Energy analyzed• All electricity monitored together (includes all HVAC, hot water usage, lighting and MELs)
• Heat pumps (heating/cooling) in apartments• Direct Electric baseboards in stairs• HRV• Direct Electric WH
Uptown Lofts
0
5000
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15000
20000
25000
30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
0
5000
10000
15000
20000
25000
30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model
77F Winter & 72F Summer Temperature Setpoints Modeled PHIUS+ 2015
Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
0
5000
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20000
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30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model Heat Pumps Malfunction
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
0
5000
10000
15000
20000
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30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model Actual Climate
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
0
5000
10000
15000
20000
25000
30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model Double Hot Water Usage
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
0
5000
10000
15000
20000
25000
30000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 ModelDouble Hot Water Usage 77F Winter & 72F Summer Temperature SetpointsGarage Lighting Actual ClimateHeat Pumps Malfunction Modeled PHIUS+ 2015Modeled PHI Standard
Mon
thly(kWh)
Uptown Lofts
100%
79%
65%
60% 59% 59%57% 56%
33%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Adjusted Model Totals
Total: Monitored vs Adjusted Models
Monitored Fully Adjusted PHIUS+ 2015 Model
Double Hot Water Usage Heat Pumps Malfunction
Garage Lighting 77F Winter & 72F Summer Temperature Setpoints
Actual Climate Modeled PHIUS+ 2015
Modeled PHI Standard
Total(kW
h)
Uptown Lofts
KnickerbockerCommons
Things to keep in mind
• Site Energy analyzed (converted to kWh)• Electricity and gas monitored separately
– Electric: cooling, lighting, MELs– Gas: heating, water heating, dryers
• Hydronic Heating/water heater system• ERV• Individual AC units for cooling
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model Actual Climate
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model Double Hot Water Usage
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model
77F Winter & 72F Summer Temperature Setpoints Modeled PHIUS+ 2015
Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model 85% Efficient Boilers
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model 1.0 ACH Airtightness
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 ModelDouble Hot Water Usage 77F Winter & 72F Summer Temperature Setpoints1.0 ACH Airtightness Actual Climate85% Efficient Boilers Modeled PHIUS+ 2015Modeled PHI Standard
Mon
thly(kWh)
Knickerbocker Commons
100%
77%
72%
63%61%
66%
60% 61%
43%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Adjusted Model Totals
Total: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model
Double Hot Water Usage 85% Efficient Boilers
1.0 ACH Airtightness 77F Winter & 72F Summer Temperature Setpoints
Actual Climate Modeled PHIUS+ 2015
Modeled PHI Standard
Total(kW
h)
Knickerbocker Commons
Orchards at Orenco I
Things to keep in mind
• Site Energy analyzed (converted to kWh)• Electricity monitored separately• Heat pumps (heating/cooling) in apartments w/ direct electric backup
• HRV• Natural Gas WH• Natural Gas Clothes Dryers
Orchards at Orenco I
0
5000
10000
15000
20000
25000
30000
35000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Orchards at Orenco I
0
5000
10000
15000
20000
25000
30000
35000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model Actual Climate
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Orchards at Orenco I
0
5000
10000
15000
20000
25000
30000
35000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model 75F Winter setpoint
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Orchards at Orenco I
100%
89% 89% 90% 89%
60%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Adjusted Model Totals
Total: Monitored vs Adjusted Models
Monitored (Electricity + Gas) kWh Fully Adjusted PHIUS+ 2015 Model
75F Winter setpoint Actual Climate
Modeled PHIUS+ 2015 Modeled PHI Standard
Mon
thly(kWh)
Orchards at Orenco I
Thoughts so far
1. Onsite Verification is a must!2. 1‐year monitoring period = not normalized3. Climate Specific Design Targets are crucial
PASSIVE BUILDING PART OF THE SOLUTION
43©2017 Passive House Institute US | PHIUS
Katrin Klingenberg, Executive Director PHIUSJames Ortega, Certification Staff
www.PHIUS.org/www.PHAUS.org
Second and Delaware – Kansas City
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