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NRCan Screening Tool Small Office sensitivity study - Alberta Region A - Calgary
The baseline models have 3 floors, distributed over a conditioned floor area of 4,010 square meters.
The office models include typical perimeter and core zones all served by the same heating, ventilation and air
conditioning (HVAC) system.
This version of the CBIP Small Office Archetype uses a 4PFC instead of a VAV heat and ventilation distribution system.
In all other respects it follows the archetype.
Selected for the optimized small office
Floor Area (m 2) 4,010
FWR 0.4
Window U 3.2
Natural gas fired hydronic 4PFC heat -w- boiler eff @ 0.8
lighting power density (W/m2) 18
2
plug Loads (W/m ) 7.5
Service Water (W/person) 90
Occupants (m 2/person) 25
OA Volume -based on building type- (L/s) 1,604
Wall RSI-value 1.818
Roof RSI-value 2.128
Wall-to-roof ratio 1.2
Ref Bldg energy (GJ) (VAV ref uses 3,821 GJ) 3,415 3821
Boiler Upgrade Energy
Consum % diff
reference boiler 80% eff (on-off) 3,415 10.63%
Upgrade to 85% eff (on-off) 3,332 2.43%
Upgrade to 85% eff (modulating) 3,233 5.33%
Upgrade to 90% eff (modulating) 3,166 7.29%
Upgrade to 92% eff (modulating) 3,142 7.99%
Upgrade to 92% eff (condensing) 3,099 9.25%
Upgrade to 95% eff (condensing) 3,066 10.22%
SHW Boiler Upgrade Energy
Consum % diff
Upgrade to 85% eff (natural gas) 3,410 0.15%
Upgrade to 90% eff (natural gas) 3,406 0.26%
Upgrade to 95% eff (natural gas) 3,403 0.35%
Upgrade to 100% eff (electric - note under MNECB+CBIP reference = proposed) 3,400 0.44%
Window relative performance FWR Energy
Consum
Improvement on base ref - (Ref holds at 3,821 GJ) 40 3,415
Improvement on base ref - (Ref holds at 3,821 GJ) 45 3,520
Improvement on base ref - (Ref holds at 3,821 GJ) 50 3,631
Improvement on base ref - (Ref holds at 3,821 GJ) 55 3,747
Improvement on base ref - (Ref holds at 3,821 GJ) 60 3,867
Improvement on base ref - (Ref holds at 3,821 GJ) 65 3,991
Improvement on base ref - (Ref holds at 3,821 GJ) 70 4,120
no improvement on base ref - (Ref holds at 3,882 GJ) 75 4,254
no improvement on base ref - (Ref holds at 3,882 GJ) 80 4,393
no improvement on base ref - (Ref holds at 3,882 GJ) 85 4,536
no improvement on base ref - (Ref holds at 3,882 GJ) 90 4,685
no improvement on base ref - (Ref holds at 3,882 GJ) 95 4839
Window U-value (W/m2*degC) Energy
windows at 40% FWR -w- SC @ 0.,74 - SHGC @ 0 .736 unless noted Consum % diff
Reference Building w/ 40% FWR, window U=3.2, SC=0.736 3,415 10.63%
SC = SHGC*0.8*1.15 - extra factor to account for blinds etc.-
CLR-CLR, air, alum spcr, TB alum frm: SHGC=0.69, SC=0.63 U=3.50
CLR-CLR, air, alum spcr, FG frm: SHGC=0.66, SC=0.61, U=2.79 3,267 4.33%
CLR-LE, argon, alum spcr, TB alum frm: SHGC=0.64, SC=0.59, U=2.55 3,193 6.50%
CLR-LE, argon, TB spcr, TB alum frm: SHGC=0.64. SC=0.59, U=2.45 3,165 7.32%
CLR-LE, argon, alum spcr, FG frm: SHGC=0.61 , SC=0.56, U=1.89 3,007 11.95%
CLR-LE, argon, TB spcr, FG frm: SHGC=0.61, SC=0.56, U=1.82 2,990 12.45%
CLR-LE(TiR), argon, alum spcr, FG frm: SHGC=0.44, SC=0.41, U=1.68 2,900 15.08%
CLR-LE(TiR), argon, TB spcr, FG frm: SHGC=0.44, SC=0.41, U=1.61 2,881 15.64%
CLR-CLR-LE, air-argon, 2 TB spcr, FG frm: SHGC=0.54, SC=0.50, U=1.30 2,842 16.78%
CLR-LE-LE, argon-argon, 2 TB spcr, FG frm: SHGC=0.50, SC=0.46, U=1.10 2,779 18.62%
CLR-LE-LE (TiR), argon-argon, 2 TB spcr, FG frm: SHGC=0.34, SC=0.31, U=0.94 2,671 21.79%
4PFC "Reference" Service hot water (SHW) % 66 1.9%
Fans and pumps % 428 12.5%
Plug loads (equipment) % 403 11.8%
Interior Lighting % 765 22.4%
Space Cooling % 344 10.1%
Ventilation Air Heating % 0.0%
Space Heating % 1409 41.3%
3415 100%
rs. Utility
ation and air rates as Elect
per consumpti
on distribution system. Screening on = Elect
Tool for $0.083/k demand = Nat Gas consumption
Region Wh $0.0/kW = $11.0/GJ
New RSI R New
Wall 0.0 Energy
1.818 10.3 Consum
2 11.4
2.5 14.2
3 17.0
3.5 19.9
4 22.7
R-value 4.5 25.5
10 5 28.4
12 5.5 31.2
6 34.1
6.5 36.9
7 39.7
7.5 42.6
$ Savings
$ 7,063 New RSI R New
$ 888 7951 Roof 2.128 12.1 Energy
$ 1,983 9046 2.5 14.2 Consum
$ 2,712 9775 3 17.0
$ 2,981 10044 3.5 19.9
$ 3,451 10514 4 22.7
$ 3,819 10882 4.5 25.5
5 28.4
5.5 31.2
$ Savings 6 34.1
-$ 6 7057 6.5 36.9
$ 32 7095 7 39.7
$ 66 7129 7.5 42.6
-$ 49 7014 10 56.8
15 85.1
% diff $ Savings HRV % New
10.63% $ 7,063 % 0 Energy
7.88% $ 5,566 Vent 5 Consum
4.97% $ 4,013 Air 10
1.94% $ 2,404 Recov 15
-1.20% $ 737 20
-4.45% -$ 989 25
-7.83% -$ 2,776 30
-11.33% -$ 4,626 35
-14.97% -$ 6,539 40
-18.71% -$ 8,518 45
-22.61% -$ 10,565 50
-41.70% -$ 12,679 55
60
80
$ Savings
$ 7,063 Lighting power density in W
FWR @ 40% - no daylighting controls us
Screening Tool Default starts at
$ 2,676 9739
$ 3,578 10641
$ 3,837 10900 Note "Law of unintended consequences":
$ 5,563 12626 Total building energy consumption drops only
$ 5,705 12768 slowly with reducing lighting energy - check
$ 8,168 15231 Screening Tool graphs to see how heating is
$ 8,348 15411 increased to fill the gap.
$ 7,634 14697
$ 8,634 15697
$ 11,301 18364
(GJ) % diff $ Savings
rel. diff $ diff
0.00% - $ - -
3,415 10.63% $ 7,063 $ -
3,394 0.61% -10.01% $ 7,230 $ 167
3,357 1.70% 1.08% $ 7,563 $ 333
3,331 2.46% 0.76% $ 7,785 $ 222
3,314 2.96% 0.50% $ 7,943 $ 158
3,300 3.37% 0.41% $ 8,062 $ 119
3,290 3.66% 0.29% $ 8,155 $ 93
3,281 3.92% 0.26% $ 8,229 $ 74
3,275 4.10% 0.18% $ 8,289 $ 60
3,269 4.28% 0.18% $ 8,340 $ 51
3,264 4.42% 0.15% $ 8,382 $ 42
3,260 4.54% 0.12% $ 8,419 $ 37
3,256 4.66% 0.12% $ 8,450 $ 31
(GJ) % diff rel. diff $ Savings $ diff
3,415 10.63% - $ 7,063 -
3,400 0.44% -10.19% $ 7,062 -$ 1
3,387 0.82% 0.38% $ 7,109 $ 47
3,377 1.11% 0.29% $ 7,142 $ 33
3,370 1.32% 0.20% $ 7,167 $ 25
3,365 1.46% 0.15% $ 7,186 $ 19
3,360 1.61% 0.15% $ 7,202 $ 16
3,357 1.70% 0.09% $ 7,214 $ 12
3,354 1.79% 0.09% $ 7,225 $ 11
3,351 1.87% 0.09% $ 7,234 $ 9
3,349 1.93% 0.06% $ 7,241 $ 7
3,347 1.99% 0.12% $ 7,248 $ 7
3,340 2.20% 0.26% $ 7,271 $ 23
3,334 2.37% 0.18% $ 7,294 $ 23
(GJ) % diff rel. diff $ Savings $ diff
3,415 10.63% - $7,063 -
3,397 0.53% -10.10% $7,068 $ 5
3,376 1.14% 0.61% $7,292 $ 224
3,355 1.76% 0.61% $7,516 $ 224
3,333 2.40% 0.64% $7,740 $ 224
3,312 3.02% 0.61% $7,964 $ 224
3,291 3.63% 0.61% $8,187 $ 223
3,270 4.25% 0.61% $8,411 $ 224
3,249 4.86% 0.61% $8,635 $ 224
3,227 5.51% 0.64% $8,859 $ 224
3,206 6.12% 0.61% $9,083 $ 224
3,185 6.73% 0.61% $9,307 $ 224
3,164 7.35% 0.61% $9,531 $ 224
3,079 9.84% 2.49% $10,426 $ 895
Lighting power density in W/m2 Energy % diff $ Savings
R @ 40% - no daylighting controls used Consum
Screening Tool Default starts at 18 3,415 - $7,063
15 3,291 3.63% $3,566 10629
12 3,168 7.23% $7,180 14243
10 3,086 9.63% $9,590 16653
drops only 9.5 3,066 10.22% $10,192 17255
9 3,046 10.81% $10,795 17858
8.5 3,025 11.42% $11,397 18460
8 3,005 12.01% $11,995 19058
7.5 2,986 12.56% $12,571 19634
7 2,967 13.12% $13,138 20201
6.5 2,949 13.65% $13,690 20753
6 2,930 14.20% $14,244 21307
5.5 2,912 14.73% $14,795 21858
5 2,894 15.26% $15,339 22402
4.5 2,876 15.78% $15,882 22945
4 2,858 16.31% $16,425 23488
FWR (40%-95%) Roof (RSI 2.1-7.5,10,15) Wall (RSI 1.8-7.5)
40 0% 3,415 2.128 0% 3,415 1.818 0%
45 9% 3,520 2.5 3% 3,400 2 3%
50 18% 3,631 3 7% 3,387 2.5 12%
55 27% 3,747 3.5 11% 3,377 3 21%
60 36% 3,867 4 15% 3,370 3.5 30%
65 45% 3,991 4.5 18% 3,365 4 38%
70 55% 4,120 5 22% 3,360 4.5 47%
75 64% 4,254 5.5 26% 3,357 5 56%
80 73% 4,393 6 30% 3,354 5.5 65%
85 82% 4,536 6.5 34% 3,351 6 74%
90 91% 4,685 7 38% 3,349 6.5 82%
95 100% 4,839 7.5 42% 3,347 7 91%
10 61% 3,340 7.5 100%
15 100% 3,334
CBIP compliance
0% 2865.75
100% 2865.75
CBIP reference
0% 3,821
100% 3,821
all (RSI 1.8-7.5) HRV eff. (0%-80%) Window U @ 40% FWR (USI 3.2-0.94) Boiler eff. (80%-95%)
3,415 0 0% 3,415 1 0% 3,415 0 0%
3,394 5 6% 3,397 2 10% 3,267 1 17%
3,357 10 13% 3,376 3 20% 3,193 2 33%
3,331 15 19% 3,355 4 30% 3,165 3 50%
3,314 20 25% 3,333 5 40% 3,007 4 67%
3,300 25 31% 3,312 6 50% 2,990 5 83%
3,290 30 38% 3,291 7 60% 2,900 6 100%
3,281 35 44% 3,270 8 70% 2,881
3,275 40 50% 3,249 9 80% 2,842
3,269 45 56% 3,227 10 90% 2,779
3,264 50 63% 3,206 11 100% 2,671
3,260 55 69% 3,185
3,256 60 75% 3,164
80 100% 3,079
er eff. (80%-95%) CLPD (18-4 W/m2)
3,415 18 0% 3,415
3,332 15 21% 3,291
3,233 12 43% 3,168
3,166 10 57% 3,086
3,142 9.5 61% 3,066
3,099 9 64% 3,046
3,066 8.5 68% 3,025
8 71% 3,005
7.5 75% 2,986
7 79% 2,967
6.5 82% 2,949
6 86% 2,930
5.5 89% 2,912
5 93% 2,894
4.5 96% 2,876
4 100% 2,858
6,000 Screening Tool Archetype Small Office w/ 4PFC
5,800 Calgary - Envelope & Lighting
5,600
5,400
5,200
5,000
Energy Consumption (GJ)
4,800
4,600
4,400
4,200
4,000
3,800
3,600
3,400
3,200
3,000
2,800
2,600 FWR (40%-95%) Roof (RSI 2.1-7.5,10,15) Wall (RSI 1.8-7.5)
Window U @ 40% FWR (USI 3.2-0.94) CBIP compliance CLPD (18-4 W/m2)
CBIP reference
4,000
3,800
Screening Tool Archetype Small Office w/ 4PFC
Energy Consumption (GJ)
3,600
3,400
3,200
3,000
2,800
HRV eff. (0%-80%) Roof (RSI 2.1-7.5,10,15) Wall (RSI 1.8-7.5)
Office w/ 4PFC - Calgary - Enevelope & Mechanical
7.5) Boiler eff. (80%-95%) CBIP compliance CBIP reference
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