Measuring Energy and Occupant Satisfaction, a Evidence Based Design Presentation

Measuring Energy and

Occupant Satisfaction

Evidence Based Design Symposium

AIASF April 26, 2011

Scott Shell, FAIA | EHDD Architecture

EVIDENCE BASED DESIGN | AIASF | APRIL 26, 2011






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Energy Use (Kbtu/sf/yr)

Actual: 141

Design: 111


“We check up on this project to see why it is running 27% above its predicted energy use”

GreenSource


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45% < Code

$238,000

$158,000

1.6 %

Energy Use:

PVs $:

$ after Rebate

% Total Cost

Chartwell SchoolSEASIDE, CALIFORNIA


Total Electricity Use For Specific Time Periods

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

Total All

Hours

Week Days Week Ends Daytime

Week Day

Nightime

Week Day

Daytime

Week End

Nightime

Week End

Morning

Week Day

Afternoon

Week Day

Ele

ctr

icity U

se

[kW

h]

Multi-purpose HVAC

Multi-purpose Tech Center

Multi-purpose Plugs

Multi-purpose Lighting

Classroom HVAC

Classroom Plugs

Classroom Lighting

Why Not Zero?


Unanticipated Loads


“Free” Equipment


User Operation: Site Lighting


PV Array Daily Electricity Production [kWh]

0

20

40

60

80

100

120

140

160

180

200

June-0

7

August-0

7

Septe

mber-0

7

Novem

ber-0

7

January

-08

Febru

ary

-08

April-0

8kW

h

Chartwell: Is the PV Array Working?


Operation Schedule

Net Energy


Actual EUIs (Medium Energy Types)

0

20

40

60

80

100

120

140

Medium Energy Type Buildings

Ac

tua

l E

UI

Certified Silver Gold Platinum

CBECS: 91, all types

LEED: 69, all types

Chartwell

Courtesy of Mark Frankel, NBI







0

10

20

30

40

50

60

70

80

0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 3:00 6:00 9:00 12:00

Cu

rren

t D

raw

(A

)

October 19-20, 2009

HVAC

Plug Loads

Lighting

Controls Incorrect


Equipment Failure


Equipment Failure


Net Annual Energy Use (2009)





Acoustics Airquality LightingThermal Comfort Overall

Chartwell 80 99 92 98 86

Global Ecology 77 99 61 97 98

IDeAs 30 97 95 96 88

Kavli 85 98 92 72 87

Mills A 93 82 84 90

CSUMB 65 77 42 29 66

SMPL 61 68 65 43 72

Merced 61 76 71 28 28




Chartwell 80 99 92 98 86


IDeAs 30 97 95 96 88

Kavli 85 98 92 72 87

Mills A 93 82 84 90

CSUMB 65 77 42 29 66

SMPL 61 68 65 43 72

Merced 61 76 71 28 28

Radiant




Chartwell 80 99 92 98 86


IDeAs 30 97 95 96 88

Kavli 85 98 92 72 87

Mills A 93 82 84 90

CSUMB 65 77 42 29 66

SMPL 61 68 65 43 72

Merced 61 76 71 28 28

Dedicated Ventilation




Chartwell 80 99 92 98 86


IDeAs 30 97 95 96 88

Kavli 85 98 92 72 87

Mills A 93 82 84 90

CSUMB 65 77 42 29 66

SMPL 61 68 65 43 72

Merced 61 76 71 28 28

Underfloor Air




Chartwell 80 99 92 98 86


IDeAs 30 97 95 96 88

Kavli 85 98 92 72 87

Mills A 93 82 84 90

CSUMB 65 77 42 29 66

SMPL 61 68 65 43 72

Merced 61 76 71 28 28

Thin Building Section


The David & Lucile Packard Foundation

343 Second Street Project


Sustainability Strategies


Computer Monitor Energy Use

Courtesy of Rumsey Engineers


Energy monitoring AnnualReal Time (actionable)

Acoustic Testing during construction

Controls Integration Sub

Clearly Defined CommissioningAutomatic sunshadesLighting controls


Design Team: Post Occupancy PhaseClient Team: Sustainable Task Force


Education

Measuring Energy and Occupant Satisfaction, a Evidence Based Design Presentation