what is ashrae 90.1?

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What is ASHRAE 90.1?

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MIke Tillou, PE, LEED AP, delivered this presentation to the Boston ASHRAE chapter.

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Page 1: What is ASHRAE 90.1?

What is ASHRAE 90.1?

Page 2: What is ASHRAE 90.1?

Cannon Design is a Registered Provider with The American Institute of g gArchitects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.

This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material ofconstrued to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

AIA HSW/SD LU = 1AIA HSW/SD LU = 1PIE PDH = 1

Page 3: What is ASHRAE 90.1?

Cannon Design

What is ASHRAE 90.1-2010?

1

Page 4: What is ASHRAE 90.1?

Learning Objectives

P id i f ASHRAE St d d 90 1 i l di hi t- Provide an overview of ASHRAE Standard 90.1, including history, scope, and process for maintaining the standards

- Describe the energy savings comparison of 90.1-2010 to 90.1-2004- Discuss approved changes to 90.1-2010- Describe future improvements for 90.1-2013

Page 5: What is ASHRAE 90.1?

What is ASHRAE 90.1?

Mi i St d d f th- Minimum Standard for the energy efficiency of buildings and building components.

- Covers:- Building Envelope- Heating, Ventilation and Air

Conditioning EquipmentConditioning Equipment- Lighting- Service Water Heating- Some building process loads- Electrical motors and transformers

Page 6: What is ASHRAE 90.1?

History of ASHRAE 90.1

Page 7: What is ASHRAE 90.1?

Consensus Standard:- Stakeholders include: manufacturer’s, designers,

code officials, trade organizations and user groups.- All changes must be moved forward and approved by g y

a majority of the members on the committee- Follows the requirements established by ANSI.

Cost effective:- All items are evaluated for cost effectiveness

Prescribed set of financial criteria updated every 3- Prescribed set of financial criteria updated every 3 years

- This is a unique feature of ASHRAE 90.1.

Page 8: What is ASHRAE 90.1?

Regionalization by Climate Zone

DRY (B) MOIST (A)MARINE (C)

Warm-Humid below White Line

Page 9: What is ASHRAE 90.1?

Continuous Maintenance:- Began in 2001- New versions every 3 years - Addendum published continuouslyy- Full Committee meetings 4 times a year- Monthly Sub-committee calls

Sub-Committees:- Building Envelope

Mechanical- Mechanical- Electrical- Energy Cost Budget

F t d C li- Format and Compliance

Page 10: What is ASHRAE 90.1?

Compliance with Standard 90.1

Page 11: What is ASHRAE 90.1?

Appendix G Performance Rating Method

M th d l t l l t th f b d- Methodology to calculate the energy performance beyond the minimum requirements of the standard.

- Requires hourly energy simulation.

- Establishes the baseline reference building criteria

Appendix G is referenced by

- USGBC for LEED energy performance credits

- The Federal Building Energy Tax credit

- ASHRAE Standard 189.1 Green Building Standard

- Local green building standards

Page 12: What is ASHRAE 90.1?

ASHRAE 90.1-2010

Page 13: What is ASHRAE 90.1?
Page 14: What is ASHRAE 90.1?

Why?

Page 15: What is ASHRAE 90.1?

Why?

Page 16: What is ASHRAE 90.1?

Measuring Our Progress - PNNL Progress Indicator

Page 17: What is ASHRAE 90.1?
Page 18: What is ASHRAE 90.1?
Page 19: What is ASHRAE 90.1?
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Page 21: What is ASHRAE 90.1?

Progress Indicator Construction Weighting

B ildi t t 80% f t ti- Building prototypes cover 80% of construction area

- Assigned by areag yMaximum impact by area: Retail, warehouse, apartment, education, office

- Assigned by climate zoneAssigned by climate zoneMaximum impact by climateo Zones 3-5 have 73% of construction volumeo Zones 2-5 have 91% of construction volumeo Zones 2 5 have 91% of construction volume

Page 22: What is ASHRAE 90.1?

Energy Performance Results by Prototype

Page 23: What is ASHRAE 90.1?

Did we reach our goal?

Page 24: What is ASHRAE 90.1?

QUESTIONS?

Page 25: What is ASHRAE 90.1?

How did we get there?

Page 26: What is ASHRAE 90.1?

New Addenda

Page 27: What is ASHRAE 90.1?

Addenda Goals

Technically justifiedTechnically justified

Simplicity

Flexibility

Enforceable

Page 28: What is ASHRAE 90.1?

What’s New in ASHRAE 90.1-2010?

R i d Titl P d SRevised Title Purpose and Scope

Building EnvelopeC ti Ai B iContinuous Air BarrierConstrained Glazing RequirementsMinimum Skylight Areas

HVAC ImprovementsEquipment EfficienciesWaterside Design gAirside DesignOutside Air

Li hti I tLighting Improvements

Page 29: What is ASHRAE 90.1?

Title Purpose and Scope

2 SCOPE2. SCOPE2.1 This standard provides:

a. minimum energy-efficient requirements for the design, construction and a plan for operation and maintenance of:construction, and a plan for operation and maintenance of:- new buildings and their systems- new portions of buildings and their systems

t d i t i i ti b ildi- new systems and equipment in existing buildings- new equipment or building systems specifically

identified in the standard that are part of industrial or manufacturing processesor manufacturing processes

b. criteria for determining compliance with these require-ments.

Addition allows previously un-regulated energy uses to be brought into the scope of the standard

Page 30: What is ASHRAE 90.1?

Addenda Finished but not Approved

•BB – Envelope, opaque and fenestration*•BU – Datacenters*BU Datacenters•CX – 40% WWR option*•CY – Economizers*•DF – Elevators* - Denotes high profile addenda

Page 31: What is ASHRAE 90.1?

Addenda Finished but not Approved

Addendum bb Increased Wall InsulationAddendum bb - Increased Wall InsulationExample –Zone 5 Steel Framed•

2.67”

Page 32: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Building Envelope

Building Envelope –Air Barrier (bf)

- clearly identify components on construction documents.

- Detail all joints, interconnections, and penetrations

- Shall extend over all surfaces of the building envelope

Sh ll b d i d t i t i ti d- Shall be designed to resist posi-tive and negative pressures from wind, stack effect, and mechanical ventilation.

Page 33: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Building Envelope

M S th l i th E t W t (b )More South glazing than East or West (bn)- Building orientation- Land purchases and campus planning- No public review comments

Exceptions- Storefront, - Shaded building, Infill with nearby building on south, - Alterations with no increase in glazingg g

Page 34: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Building Envelope

Addi i l R iAdditional Requirements:

Cool roofs required in Zones 1-3q

Minimum Skylight area t th 5 000 ft ith- spaces greater than 5,000 sq.ft. with

ceilings > 15’- daylight area under skylights = ½ floor area

under the skylightunder the skylight

Page 35: What is ASHRAE 90.1?

Suggestions for Compliance – Building Envelope

1. Plan building orientation early

2. Shade glass or use low SHGF

3. ‘Super’ glass & ‘Envelope Trade-off Option’

4 E l i t ti f hit t d4. Early integration of architecture and MEP engineering•

- Envelope design affects HVAC designp g g

- Energy modeling for comparing options and balancing efficiency with cost

Page 36: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

SScope- Equipment efficiency ratings- Energy recovery- Economizers- Duct sealing and leakage- Fan Power- Reheat limitations

Page 37: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

E i t Effi i ChEquipment Efficiency Changes - Unitary air conditioners and heat pumps - Single-zone VAV - Water-cooled and evap cooled air cond. and heat pumps. - Packaged terminal air conditioners and heat pumps - Water-to-water heat pumps- Water-to-water heat pumps - Computer room air conditioners (CRAC). - Variable-refrigerant-flow (VRF) multi-splits. - Chillers. - Glycol or brine in chillers - Cooling Towers- Liquid-to-liquid heat exchangers. - Heat pump pool heaters- Furnaces & water heatingFurnaces & water heating

Page 38: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

Waterside System DesignWaterside System Design - Two-position valves in water-cooled unitary products.

- Variable-flow and variable-speed pumping. p p p g

- Service water booster systems

- Pump pressure optimization

- Maximum flows in nominal pipe sizes.

- Pump head calculations

- Pipe insulation- Pipe insulation.

Page 39: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

M i fl i i l i iMaximum flows in nominal pipe sizes.

Page 40: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

Ai D i d C lOutdoor Air Design and Control- Economizers.

- Heat recovery economizer exception- Heat recovery economizer exception.

- Data center exceptions for air economizers.

- Waterside economizers for data centers.

- Dampers.

- Exhaust air energy recovery

Z l l d d t ll d til ti (DCV)- Zone-level demand-controlled ventilation (DCV).

- Ventilation optimization (ventilation reset).

- Garage ventilation controlsg

Page 41: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

Ai id E iAir-side Economizers-

Page 42: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

Economizer ExceptionsEconomizer Exceptions-

Page 43: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

Ai id D i d C t lAirside Design and Control- Supply air reset controls.

- Dual maximum control on VAV boxes.Dual maximum control on VAV boxes.

- Overhead heating temperature limit.

- VAV control on lab exhaust systems.

- VAV requirements for chilled water air-handling units serving a single-zone.

- Fan power limitation p

- Heat recovery pressure drop adjustments .

- Kitchen exhaust hoods

- Duct leakage —class A

Page 44: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

D l i l VAV bDual maximum control on VAV boxes.

Page 45: What is ASHRAE 90.1?

What’s New in 90.1-2010 – HVAC

E R R iEnergy Recovery Requirements

Page 46: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Lighting

CCovers- Interior spaces of buildings

- Exterior building featuresExterior building features

- Exterior grounds lighting powered through the buildingE tiExceptions

- Emergency lighting that is normally off

- Lighting required by life safety statute

- Lighting in dwelling units

Page 47: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Lighting

Lighting Power Density changes

The LPD for most building areas and spaceThe LPD for most building areas and space types were reduced but in some instances the LPD was increased.

Page 48: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Lighting

Li hti ChLighting Changes

Exit Signs Limited to 5 Watts

Exterior allowance adjustments

Extended shutoff requirements to buildings <5,000 SF

Requires “manual on” for most lighting controls

Modified to only allow 50% on

Daylight switching requirements for areas with >1,000 SF of day-lit space

Allows a LPD credit if controls are added in addition to mandatory requirementsAllows a LPD credit if controls are added in addition to mandatory requirements

Page 49: What is ASHRAE 90.1?

What’s New in 90.1-2010 – Lighting

A t ti D li hti C t l f P iAutomatic Daylighting Controls for Primary Sidelighted Areas > 1,000 sq.ft..

Page 50: What is ASHRAE 90.1?

Suggestions for compliance – Lighting

S ti f liSuggestions for compliance- Minimize incandescent use

- Use efficient sources –e.g. super T-8Use efficient sources e.g. super T 8

- Use efficient fixtures

- Vary lighting levels according to need

- Incorporate automatic lighting controls

- Look for daylighting opportunities

Page 51: What is ASHRAE 90.1?

What’s Next: 90.1-2013

Page 52: What is ASHRAE 90.1?

ASHRAE Standard 90.1-2013

Expand to new areasCommercial/industrial equipmentWhere to startIdentify & engage stakeholders

Workplan Goal –Workplan Goal 40% Whole Building energy savings over 90.1-2004

Page 53: What is ASHRAE 90.1?

90.1-2013 Looking Forward

1 Wh l B ildi D i Li k d C i i1. Whole Building Design – Linked Criteria2. Pilot a performance based compliance path

Page 54: What is ASHRAE 90.1?

90.1-2013 Looking Forward

Changes Already Approved for Public Review

Exterior Wall Insulation improvements(Finally!)

Escalator/Moving Sidewalk controls

Maximum Glazing percentages by Building type in Appendix G

Efficiency Requirements for Commercial Refrigeration Equipment

Minimum Efficiencies for Air-to-Water ground source and ground water heat pumps

Minimum Transformer Efficiency requirements

Page 55: What is ASHRAE 90.1?

90.1-2013 – Looking Forward

Ideas are welcome

Page 56: What is ASHRAE 90.1?

Questions?Questions?

For more information please contact:

Mike TillouMike TillouCannon Design716.774.3550MTillou@cannondesign [email protected]

This concludes The American Institute of Architects Continuing Education Systems Program