Energy Trust New Buildings: Technical Updates for Modelers and Engineers

New Buildings Technical Training July 14, 2016

Agenda

• Introductions • Updates to Technical

Guidelines • Code Changes • Code Development • Open Studio and EDAPT • Program Feedback

Introductions

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

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

A clean energy power plant

548 119

average megawatts saved

aMW generated

annual therms saved 45M tons of carbon

dioxide avoided 17.4M

Enough energy to power

513,000 homes and heat

89,000 homes for a year

Technical Guidelines Introduction

• Documents technical requirements

• Relevant to Modeled Savings and Special Measures

• Technical guidelines and Oregon code

• Contact Program for alternative approach

Locating Guide

energytrust.org 1. Commercial 2. New Construction and

Major Renovations 3. Find Forms 4. Technical Guidelines

1

2 3

4

Technical Guidelines – Summary of Updates

SEED Appendix L Pre-approved

Bundled Measures

Pool Dehumidification Baseline HVAC

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

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

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%

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

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

Code Changes

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

Code Changes cont.

Mechanical • Minimum efficiency requirements • Added efficiency tables − Computer room air conditioning − Variable Refrigerant Flow systems

• Expanded pipe insulation table

Code Development

Envelope HVAC

Lighting Prescriptive packages for simple buildings

Open Studio and EDAPT

EDAPT

• Designed around OpenStudio • Automated report generation • Custom QAQC of OpenStudio

models • Contractor portal

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)

Open Studio – Building Component Library

Program Discussion

Thank You

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