Energy Trust New Buildings: Technical Updates for Modelers and Engineers

1. New Buildings
Technical Training
July 14, 2016

2. Agenda
• Introductions
• Updates to Technical
Guidelines
• Code Changes
• Code Development
• Open Studio and EDAPT
• Program Feedback

3. Introductions
• Cindy Strecker – Senior Engineering Manager
• Michael Crayne – Engineer
• Forest Tanier-Gesner – Engineer
• Cory Fulton – Engineer
• Emily Rosenbloom – Technical Manager

4. About
• Independent nonprofit
• Serving 1.5 million
customers of Portland
General Electric, Pacific
Power, NW Natural and
Cascade Natural Gas
• Providing access to
affordable energy
• Generating homegrown,
renewable power
• Building a stronger Oregon
and SW Washington

5. A clean energy power plant
548
119
average
megawatts saved
aMW
generated
annual therms
saved45M tons of carbon
dioxide avoided17.4M
Enough energy to power
513,000 homes
and heat
89,000 homes
for a year

6. Technical Guidelines Introduction
• Documents technical
requirements
• Relevant to Modeled
Savings and Special
Measures
• Technical guidelines
and Oregon code
• Contact Program for
alternative approach

7. Locating Guide
energytrust.org
1. Commercial
2. New Construction and
Major Renovations
3. Find Forms
4. Technical Guidelines
1
2
3
4

8. Technical Guidelines – Summary of Updates
SEED Appendix L
Pre-approved
Bundled
Measures
Pool
Dehumidification
Baseline HVAC

9. Technical Guidelines – Baseline HVAC
Expanded the baseline mapping to include ASHRAE Appendix G
Heating Fuel / Building Type (Table 4.8) Fossil Fuel and
Purchased Heat
Electric and
Other
Hybrid Systems
Residential Sys 1 – PTAC Sys 2 – PTHP Sys 1 – PTAC
Non-residential, 3 floors or fewer and
<25,000 sq. ft.
Sys 3 – PSZ-AC Sys 4 – PSZ-HP Sys 3 – PTZ-AC
Non-residential , 4 – 5 floors and <25,000
sq. ft. or 5 floors or fewer and 25,000 –
150,000 sq. ft.
Sys 8 – Packaged
VAV with reheat
Sys 9 – Packaged
VAV with PFP
boxes
Sys 10 –
Packaged Hybrid
VAV
Non-residential and more than 5 floors or
>150,000 sq. ft.
Sys 5 VAV with
reheat
Sys 6 – VAV with
reheat
Sys 7 – Hybrid
VAV with reheat
Retail and 1 – 2 floors Sys 3 – PSZ-AC Sys 4 – PSZ-HP Sys 3 – PTZ-AC
Heated-only storage Sys 11 – Heating
and ventilation
Sys 12 – Heating
and ventilation
Sys 11 – Heating
and ventilation

10. Technical Guidelines – Pre-approved bundles
No Longer
Available
• Envelope measures
• Timeclock lighting
controls
• >90% condensing tank
DHW in all applications
• Showerheads <2 GPM
• Air conditioning, air-
source heat pump, and
water-source heat
pump units
• VFDs on pumps and cooling
tower fans
• Duct static pressure
reduction
• Terminal fan-powered VAV
boxes
• Increasing heating/cooling
coil temperature differentials
• High-efficiency transformers

11. Technical Guidelines – Pre-approved bundles
Newly
Approved
• LPD reductions up to 60% better than code
• Condensing tank DHW >94% AND in lodging,
restaurant, laundry, or residential
• Showerheads <1.75 GPM
• Condensing unit heaters >92%
• Condensing boilers >94%

12. Technical Guidelines –
2014 OEESC code change
No longer one standard
baseline
Model the baseline system to
be the same overall type as the
proposed system
Pool Dehumidification

13. Technical Guidelines – General Reminders
2.2.3 Avoid fuel switching fuels must match between baseline and proposed
2.3.2 Generally recognized as cost effective measures these measures can
be bundled together for cost effectiveness screening
2.3.3 Measure definition (formerly referred to as “bundling”) components
may be defined as one measure if they have positive savings
interactions, negative cost interactions, or significant functionality
interactions
2.4.2 Modeling for interactive effects projects must submit individual
measure runs, as well as an interactive model with all measures

14. Code Changes

15. Code Changes
Envelope
• Air leakage/air barrier
requirements
Lighting/Electrical
• Modified lighting power
allowance tables
• Include bathrooms in sleeping
unit lighting controls
Service Hot Water
• Gravity or thermosiphon
circulation loops for hot water
prohibited
• Revised requirements for
heat recovery on heated
pools
• Pool heater efficiency
requirement increased

16. Code Changes cont.
Mechanical
• Minimum efficiency requirements
• Added efficiency tables
− Computer room air conditioning
− Variable Refrigerant Flow systems
• Expanded pipe insulation table

17. Code Development
Envelope HVAC
Lighting
Prescriptive
packages
for simple
buildings

18. Open Studio and EDAPT

19. EDAPT
• Designed around OpenStudio
• Automated report generation
• Custom QAQC of OpenStudio
models
• Contractor portal

20. Open Studio – Features
• Open source interface for
Energy Plus
• Actively updated by NREL
• Asset Score enables shoe box
modeling
• Integrates with SketchUp
• Parametric Analysis Tool (PAT)
• Building Component Library
(BCL)

21. Open Studio – Building Component Library

22. Program Discussion

23. Thank You
Emily Rosenbloom, Technical Manager
emily.rosenbloom@clearesult.com
503.595.4429