and the new 2013 title 24 energy standards · and the new 2013 title 24 energy standards presented...

,

and the new 2013 Title 24 Energy Standards

Presented by

Dave Intner, AIA and Kavita Rodrigues, CEPE | Southern California Edison | October 1st, 2014

Savings By Design Defined

Savings By Design is a statewide energy

efficiency program available to new construction,

additions, and major renovations.

The Program encourages high performance,

sustainable, design and construction of non-

residential buildings through:

• Design Assistance

• Owner Incentives

• Design Team Incentives

• Energy Design Resources

Introduction

Photo

by

Tim

Griff

ith

UC Merced - Merced, CA

Introduction

Power vs. Energy (Demand vs. Usage)

kW = Power

kWh = Energy

How fast am I going?

How far have I gone?

Savings By Design is a Demand-Side

Management (DSM) program.

DSM programs influence utility customers to

design and/or install gas/energy efficiency and

managing equipment as an effort to decrease

gas and electrical demand on the grid and avoid

gas and power delivery interruptions during peak

periods.

Peak Events typically occur during the summer

months for electricity and winter months for gas.

Introduction

Savings By Design Meeting Demand

Two Approaches to High-Performance Buildings

Preferred method of achieving energy

savings through early collaboration.

This approach considers integrated,

optimized energy solutions.

Whole Building Approach

Each building system can be designed

to achieve greater efficiency on its own

rather than as a collection of components.

Systems Approach

UCSB Resource Building - Santa Barbara, CA

Core Incentive

Projects will receive $100 perpeak kW saved. Subject to all applicable caps.

Up to $150,000 per project.

(Limited to 75% of incremental costs

for energy efficiency measures.)

Owner Incentives range from $0.10 to$0.30 per annualized kWh savings, with a step increase to $0.40³ per annualized kWh savings for projects that exceed Title 24 by 40% and $1.00 per annualized therm savings as the design becomes more efficient.

Whole Building Approach - Owner

$0.10

$0.30

$0.03

$0.10

$0.00

$0.05

$0.10

$0.15

$0.20

$0.25

$0.30

$ p

er

kW

h s

avin

gs

Savings Compared to Title 24

Electric Incentive Rates

Owner - $150,000 maximum

Design Team - $50,000 maximum

$.333

0% 5% 10% 15% 20% 25% 35%

$1.00 $.333

$1.00

Gas Incentive Rates/Annualized Therm Savings

Electric Incentive Rates/Annualized kWh Savings

30%

Design Team Assistance & Incentives

Whole Building Approach - Team

• Plan Review & Recommendations• System Optimization Analysis• Computer Simulation Analysis• Economic Feasibility Studies

Assistance Matched to Need & Project

• Maximum $50,000 per Project

Incentives

(Available to Design Teams who engage SCE

early in the design process.)

It’s Easy To Work With Savings By Design

Whole Building Approach - Team

Application• Letter of Interest• DT Incentive Application

Owner’s Agreement, with:• WBA Summary Package• Digital Set of Plans• Spec’s & Submittals on EE Measures• Energy Model

What We Need From You

Owner Incentives

Systems Approach - Owner

(based on calculated savings)

Daylight Systems $0.05 kWh Savings

Interior Lighting Systems $0.05 kWh Savings

HVAC Systems $0.15 kWh Savings

Process Systems $0.09 kWh Savings

Gas Systems $1.00 / therm Savings

Peak kW Savings $100 / kW Saved

Maximum Incentive $150,000 (per project)

Parking Lot $0.08 / sq.ft. Savings

It’s Even Easier To Work With SBD On SA Projects

Systems Approach - Owner

What We Need From You

Application• Letter of Interest

Documents• Digital Set of Plans• Spec’s and Submittals on EE Measures

That’s it! We do the rest for you!

Demand Response

Demand Response

� Automated Demand Response (Auto DR) signals your EMS to drop noncritical loads during times of peak demand

� When energy is more expensive� Helps avoid rotating outages

� Incentives: Technical Assistance, plus monetary incentives on a case-by-case basis.

Benefits of designing DR capabilities:

� Title 24 moving toward DR as a mandated measure (incentives for early adopters)

� Avoid retrofit costs later (EMS, control systems, circuiting, etc.)� DR enabling technologies allow for DR program participation as an

ongoing revenue stream� LEED credits

Title 24 2013- overview

� Significant changes to envelope requirements

� Moderate increases in mechanical efficiencies

� Significant reductions in some lighting category allowances, but most are unchanged

� Multi-level dimming & daylight controls become mandatory; some additional controls opportunities

Title 24 2013 Nonresidential

Envelope

Title 24, 2013- Envelope

• Window Prescriptive Requirements

• Area Weighted Performance Ratings

RSHGC: Relative Solar Heat Gain Coefficient, which takes into account overhang benefits

Windows (40% Max Area)

Type Max U-Factor Max RSHGC Min VT

Fixed 0.36 0.25 0.42

Operable 0.46 0.22 0.32

Curtainwall 0.41 0.26 0.46

Doors 0.45 0.23 0.17


Maximum U-Factors*

• Roofs– Metal buildings: 0.098 (R-19)

– Wood framed & Other: 0.075 (R-19 wood framing)

• Walls– Metal building: 0.113 (R-13)

– Metal framed: 0.105 (R-8 Rigid over framing)

– Light Mass wall: 0.44

– Heavy Mass wall: 0.69

– Wood framed: 0.110 (R-11)

– Spandrel Panels: 0.28

*Note: Prescriptive values vary by climate zone… see

table 140.3-B


Daylighting - Section 140.3(c)

• Applies to Prescriptive compliance for buildings 3 stories or less

– Climate zones 2 through 15AND– Enclosed spaces > 5,000 sq. ft. directly under a roofAND– Ceiling heights > 15 ft.

• Unconditioned spaces and buildings must also comply

• Used in the baseline under the Performance Approach

Exception 1: Auditoriums, churches, movie theaters, museums, and refrigerated warehouses

Exception 2: Future spaces, unfinished interiors, etc.

Exception 3: Lighting Power Density (LPD) < 0.5 watts/sq. ft.


Envelope Opportunities

• Roofs– Boost insulation levels to R-30 or better

– Increase membrane reflectivity above base reflectance values



• Walls– Consider advanced alternative

framing systems, such as Insulating Concrete Forms and SIPS



• Fenestration– Design effective sunshading

devices to prevent heat gains and bounce light deeper into spaces

– Minimize exposed glass on East and West facades

– Tune glazing specs for exposure


Mechanical

Title 24, 2013- HVAC

Direct Expansion (DX) Equipment

• New efficiencies for DX equipment

• Equipment < 5 Tons 14 SEER

• Equipment >= 5 tons < 20 Tons 11.7 EER

– (Effective after 1/1/15)

Economizers

• Prescriptive threshold lowered– 54,000 Btuh (4.5 Tons)

– 1,800 CFM

• Exemptions removed– Data center / computer room cooling


Chillers

Prescriptive requires compliance with full load efficiency and IPLV maximums under Path B


HVAC Controls

• Occupancy sensors allowed as a control option for demand control ventilation

• May reduce the ventilation rate to zero

• One sensor per room

• Must do one hour pre-purge prior to normal occupancy

• Must shut off outside air within 30 minutes of vacancy

Occupancy sensors mandatory in:

– Multipurpose rooms less than 1000 sqft

– Classrooms greater than 750 sqft

– Conference rooms greater than 750 sqft

• Must automatically raise the cooling set point by 2°F or more and setback the heating temperature set point by 2˚F or more


HVAC Opportunities

• Equipment– Specify efficiency values at least 10% better than the new thresholds

– Use central plant in lieu of packaged units (req. over three stories)

• Systems*– Natural Ventilation (hybrid system preferred)

– Displacement Ventilation

– Chilled Beams

– Variable Refrigerant Flow (i.e. ductless systems)

– Evaporative Cooling

– Energy Recovery

*Note: Modeling of some advanced systems will be somewhat problematic until a

viable EnergyPlus-based tool is released for compliance modeling


HVAC Opportunities

• Systems– Natural Ventilation

(mixed mode)


HVAC Opportunities

• Systems– Displacement Ventilation


HVAC Opportunities

• Systems– Chilled Beams

Cross-sectional schematic of

an active chilled beam


HVAC Opportunities

• Systems– Variable Refrigerant Flow (ductless systems)


HVAC Opportunities

• Systems– Evaporative Cooling


HVAC Opportunities

• Systems– Energy Recovery Systems

Energy Recovery VentilatorEnthalpy Wheel


HVAC Opportunities

• Integrated design– Where is your equipment located?

– How much of your distribution is in unconditioned space?

– Do your space layouts complicate the mechanical zones?


Lighting

Title 24, 2013- Lighting

Lighting Controls

• Multi-level controls required in areas > 0.5 w/sqft and >= 100 sqft

• Each luminaire shall be controlled by at least of one of the following methods:

– Manual dimming

– Lumen maintenance

– Tuning

– Automatic daylighting controls

– Demand responsive lighting controls

Lumen Maintenance will maintain constant light output as lamp ages.

Tuning is the ability to set maximum light levels at a lower level than full power.


• Revised lighting control credits

• Daylighting controls (and others) no longer given credit in prescriptive compliance


Lighting Opportunities

• Lighting Controls– Multi-level Occupancy Sensors,

20% credit• Spaces less than 250 s.f.

• Any size classroom

• Any size conference room

• Any size waiting room

– Combine with manual dimming for an additional 5% credit



• Lighting Controls– Occupancy Sensors in Open Offices

• 251 to 500 s.f. per sensor = 20% credit

• 126 to 250 s.f. per sensor = 30% credit

• 125 s.f. per sensor or less = 40% credit



• Lighting Controls– Hotels, Restaurants, Auditoriums, Theaters

• 10% credit for a Manual Dimming System

• 20% credit for a Multi-scene programmable system


Lighting Wattage Allowances• Reduced LPDs for Offices, Grocery, Retail & Parking

• New category for Videoconferencing



• System Design– Specify high-efficacy fixture types, such as LED’s

and reduced-output fluorescents

– Select bright, reflective interior finishes

– Design to target footcandle levels for specific tasks (conduct photometric analyses)

• Lighting Controls– Addressable lighting control systems afford the

greatest flexibility

– Some control credits still available (table 140.6-A)



• Integrated design– What color are your interior finishes?

– What are the fixture mounting heights?

number of fixtures = footcandles x area lumens x LLF x CU

RCR = 5 x H x (L + W)

(L x W)

(H = distance from luminaire to work plane)

Ro

om

Cavit

y R

ati

o (

RC

R)



• Integrated design– How can the windows, skylights, and building

geometries promote daylight harvesting?



• Integrated design– What opportunity has been missed in this Energy Model?

Early Collaboration

Maximize your savings by having the

Savings By Design team involved as soon

as possible in the design of your project.


Integrative Design

Utilize the new Design Review requirement as an opportunity


Classes & Seminars

Additional Resources

Offers free seminars, classes and tours, with locations in Irwindale and Tulare.

AIA Learning Units are available for selected classes. Visit us at: www.sce.com/workshops

SCE’s Energy Education Center (EEC)

EEC - Irwindale, CA

EEC - Tulare, CA

Helpful Tools


www.energycodeace.com

Energy Code Ace

Helpful Tools


www.energydesignresources.com

Energy Design Resources

Helpful Tools


www.energy.aiacc.org

AIA California Council

Savings By Design Information


www.savingsbydesign.com

Visit Our Website

Located throughout the SCEservice territory.

Visit www.savingsbydesign.com/

to find your local representative.

Find Your Representative