Daylighting - 9:00 am
GOALS: Achieve LEED IEQ credit 8.1 - 75% Daylighting (min 10 FC) while designing to Passive House standards for window:wall ratio Meet Passive House standards for window and wall construction
165 Max FC 8 min FC 33 avg FC
90.7%
231 Max FC 12 min FC 46 avg FC
annual Savings
1.2 2 1
26%
HEATING
1.8 0.8 1.6 0.6 1.4 0.4 1.2 0.2 ASHRAE BASELINE
PROPOSED
ASHRAE BASELINE
18:00
20:00
22:00
00:00
Temperature (°F)
5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0 00:00
HEATING
02:00
04:00
06:00
08:00
10:00
12:00
14:00
16:00
18:00
20:00
22:00
00:00
22:00
00:00
Dec
Jan
20:00
22:00
00:00
20:00
22:00
00:00
Date: Mon 29/Dec
PROPOSED
0.2
COOLING
0.15 0.1
0.2 0.05 0.15
COOLING annual Savings ASHRAE BASELINE
0.1
88.9% above leed threshold (10 fc)
PROPOSED
2400 2200 2000 1800 1600
0
ASHRAE BASELINE
1400 1200 1000 800 600 400
peak reduction
200 0 00:00
PROPOSED
06:00
08:00
10:00
12:00
14:00
16:00
18:00
20:00
Cooling plant sensible load: Passive wall/Passive window27 (551 facade.aps)
Combined (heating + Cooling) COOLING HEATING
50%
annual Savings COOLING HEATING
5000 4000 3000 2000 1000 0 -1000 -2000 -3000
0 1
ASHRAE BASELINE
PROPOSED
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Date: Wed 01/Jan to Wed 31/Dec Space conditioning sensible: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
0.5
Space conditioning sensible: Passive wall/Passive window27 (551 facade.aps)
0
.671 = .3613 = .1786 = .2392
04:00
Date: Wed 14/May
0.5 1.5
LBNL Window Software
02:00
Cooling plant sensible load: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
1 2
rhino model - Exterior Perspective
99% 86%
0.25
1.5 2.5
drywall
16:00
0.25
2
ASHRAE BASELINE SOLAR GAIN
PROPOSED
4500 4000
=
3500
Solar Gain 3000 2500 4500 2000 4000 1500 3500 1000 3000 500 2500 0 2000
Assumes 15% Frame:Glazing Ratio
1500
SOLAR GAIN
60% 50%
annual Savings ASHRAE BASELINE
PROPOSED
1000
5000 4500 4000 3500
Gain (Btu/h)
Lightboxes
14:00
Heating plant sensible load: Passive wall/Passive window27 (551 facade.aps)
0
2.5
tvis(net) shgc(net) u value(COG) u value(net)
12:00
Heating plant sensible load: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
0.05
Corner Detail - nts
10:00
Cooling set point: Passive wall/Passive window27 (551 facade.aps)
0.2
Cooling
Daylighting - 3:00 pm
u value = .0211
08:00
Cooling set point: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
0.4
0
163 Max FC 8 min FC 33 avg FC
06:00
Heating set point: Passive wall/Passive window27 (551 facade.aps)
0.6
100%
04:00
Date: Mon 27/Jan
peak reduction
1 0 0.8
above leed threshold (10 fc)
6x6 Post
44%
2 1.8 1.4
Daylighting -12:00 pm
02:00
Heating
1.6
above leed threshold (10 fc)
rainscreen waterproofing 6.5” SIPs Panel 5.5” mineral wool batt vapor barrier 0.5” drywall (x2)
Load reductions
86 84 82 80 78 76 74 72 70 68 66 64 62 60 58 00:00
Heating set point: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
Load (Btu/h)
INSTRUCTOR: Matthew Herman (Buro Happold)
office setpoints: summer 75, winter 68
Load (Btu/h)
Daylighting
PROJECT STATEMENT: Design a 10’ x 15’ office space to improve energy savings over the current ASHRAE 90.1 baseline.
Lightbox
Gain (Btu/h)
Lightbox // spencer Olsufka
0
ASHRAE BASELINE
2500 2000 1500
peak reduction
500
3000
1000 500 0 00:00
PROPOSED
02:00
04:00
06:00
08:00
10:00
12:00
14:00
16:00
18:00
Date: Wed 12/Mar Solar gain: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps) Solar gain: Passive wall/Passive window27 (551 facade.aps)
Thermally Broken Frame External Conduction Gain
argon gas
6000
Optifloat Clear (Pilkington)
5000
3000
Optifloat Clear (Pilkington)
600 400
EXTERNAL CONDUCTION GAIN
2000
peak reduction
1000
Gain
200
annual Savings
4000
argon gas
68% 72%
800
0
Gain (Btu/h)
ComfortSelect40 on Clear (AGC)
-200 -400 -600 -800 -1000 -1200 -1400
Loss
-1600
0
ASHRAE BASELINE
PROPOSED
-1800 00:00
02:00
04:00
06:00
08:00
10:00
12:00
14:00
16:00
18:00
Date: Wed 14/May External conduction gain: BASELINE - ASHRAE wall/ASHRAE window40 (551 facade.aps)
sips: Continuous Insulation Outside Framing
glazing Detail - nts
Wall Section - nts
Window:Wall = .27
External conduction gain: Passive wall/Passive window27 (551 facade.aps)
all energy calculations performed with ies-ve 2013