120912 ashrae 90.1 2010 updates

10
Sharing our Guidance ASHRAE 90.1 2010 Updates

Upload: sdouglass11

Post on 20-May-2015

319 views

Category:

Technology


6 download

TRANSCRIPT

Page 1: 120912 ashrae 90.1 2010 updates

Sharing our Guidance

ASHRAE 90.1 2010 Updates

Page 2: 120912 ashrae 90.1 2010 updates

ASHRAE 90.1 2010 Updates

Overview• Goal of 90.1-2010 was to have 30% energy savings compared to

2004. The 2007 update only accomplished a 5% savings from 2004.• In 2010 updates were made to the energy efficient design of:

• Building envelopes• Mechanical Systems• Service Water Heating• Lighting Design• Electrical Power

04/12/23 2

Page 3: 120912 ashrae 90.1 2010 updates

ASHRAE 90.1 2010 Updates

Building EnvelopeThe following Addenda were made to building envelope requirements:•The vertical fenestration must meet the following requirement

• Area South ≥ Area West and Area South ≥ Area East• Exceptions: storefront glazing, urban infill, shaded buildings

•Minimum skylight fenestration area in enclosed spaces that are:• Applies to area that are 5,000 ft2 and greater with ceiling heights greater

than 15 ft, and space types such as offices, lobbies, atriums, concourses, corridors, storage areas, gymnasium/exercise centers, convention centers, automotive service, manufacturing, non-refrigerated warehouses, retail spaces, distribution/sorting areas, transportation, or workshops.

• The total skylight area shall be either; minimum of 3% of the roof area, or such that the daylight area under skylights will be a minimum of half the floor area and provide a minimum skylight effective aperture of at least 1%.

• Exceptions: Climate zones 6 through 8, spaces with lighting power densities less than 0.5 W/ft2, and shaded spaces.

•Maximum window to wall ratio was revised to 30% (from 40% in 2007).•Other miscellaneous envelope addenda:

• “Cool roofs” in climate zones 1,2 and 3• Increased envelop thermal requirements.

04/12/23 3

Page 4: 120912 ashrae 90.1 2010 updates

ASHRAE 90.1 2010 Updates

Mechanical Systems

• Equipment efficiency changes• Economizer requirements• Energy recovery requirements• Pipe Sizing– maximum flow rate for chilled water and condenser

water piping

04/12/23 4

Page 5: 120912 ashrae 90.1 2010 updates

X

ASHRAE 90.1 2010 UpdatesMechanical Equipment Efficiency Changes

Equipment Category Size 2007 Efficiency 2010 Efficiency

Air Conditioners ≥65,000 btu/h< 135,000 btu/h

10.3 EER 11.2 EER (1.4 IEER)

≥135,000 btu/h< 240,000 btu/h

9.7 EER 11.0 EER (11.2 IEER)

≥240,000 Btu/h &<760,000 Btu/h

9.5 EER (9.7 IPLV) 10.0 EER (10.1 IEER)

≥760,000 Btu/h & 9.2 EER (9.4 IPLV) 9.7 EER (9.8 IEER)

Heat Pumps ≥65,000 Btu/h &<135,000 Btu/h

9.9 EER 10.8 EER (11.0 IEER)

≥135,000 Btu/h &<240,000 Btu/h

9.1 EER 10.4 EER (10.5 IEER)

≥240,000 Btu/h 8.8 EER (9.0 IPLV) 9.3 EER (9.4 IEER)

Air-Cooled Chillers <150 tons 9.56 EER (9.56 IPLV) 9.562 EER (12.5 IPLV)

>150 tons 9.56 EER (9.56 IPLV) 9.562 EER (12.75 IPLV)

04/12/23 5

Page 6: 120912 ashrae 90.1 2010 updates

X

ASHRAE 90.1 2010 UpdatesEconomizer Requirements

04/12/23 6

• Per 90.1-2010 economizers are now required in all climate zones except 1a and 1b

• 90.1-2010 reduces the size threshold for economizers

Page 7: 120912 ashrae 90.1 2010 updates

X

ASHRAE 90.1 2010 UpdatesEnergy Recovery Requirements

04/12/23 7

• Exhaust air energy recovery systems were previously only required on systems of more than 5,000 cfm and 70% outside air

• Table 6.5.6 shows that energy recovery ventilation is now required in all humid climate zones, 1a through 6a, and cold climate zones 7 and 8.

Page 8: 120912 ashrae 90.1 2010 updates

X

ASHRAE 90.1 2010 UpdatesPipe and Pump Sizing

04/12/23 8

• New maximum allowable flows in nominal pipe sizes for chilled water and condenser water piping

• Pump head calculations are now mandatory prior to sizing pumps. This is similar to the requirements for load calculations.

Page 9: 120912 ashrae 90.1 2010 updates

X

ASHRAE 90.1 2010 UpdatesOther Miscellaneous Addenda

04/12/23 9

• BI-Pipe insulation• DI-Parking garage ventilation• AX-Kitchen hoods and make-up air• AT & CB-Damper leakage• CK-Ventilation optimization reset• AK-Pump pressure optimization• AS-Laboratory VAV or ERV required at lower threshold exhaust• H-Dual maximum VAV reheat damper position• AE-Requires insulation beneath radiant floor heating• BH-Supply air temperature reset• CQ-Increases duct sealing requirements• ….etc….

• 109 total addenda for the 90.1-2010 update

Page 10: 120912 ashrae 90.1 2010 updates

ASHRAE 90.1 2010 UpdatesCONCLUSION . . .

Questions?