sustainable buildings assignments

8/12/2019 Sustainable Buildings Assignments

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I .................................................................................................................................................. 2

..................................................................................................................................... 3

B ............................................................................................................................. 3

F ............................................................................................................................ 3

2

F ............................................................................................................................... 4

........................................................................................................................................................... 4

B F ................................................................................................................................. 5

................................................................................................................................................... 5

E A ................................................................................................................................................ 6

................................................................................................................................................... 6

.......................................................................................................................................................... 7

.................................................................................................................................................... 7

A 1: H D & I ........................................................................................................ 8

A 2: ............................................................................... 11


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F F

E . 1948 . I

1996

F . A

. A

. I 2008

, . A ;

.

. A

:

. ,

;

.

. .

A 1 ,

.

:


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3 , 2 . I

, . (

) . A 2 .

,

.

,

. 2.7

1.2. 1 2 :

B B G

C B 10" 1.2

E 1.5

2.7

B A G

C B 10" 1 2


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F

B 4" 0.8

A 1" 1

B 4" 0.8

1" 1

*B

D 0.5" 0.45

4.1

F

.

. B , 20.43.

H 16.

,

. 4 :

F

0 75" 0 15


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B I /

26" F 12" 26.4

B I /

26" F 6" 13.2

*

B 6I 0D 0.5" 0.45

40.1

.

0.32 1.07. 6 & 7:

F B

C 4" 0.32

0.32


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(A 1) .

B

H D A ()

A

(2)

B1 31 24 2 / 0.91 5.17 0.48

B2 31 24 2 / 0.91 5.17 0.48B3 37.5 21 D 2.1 5.47 0.51

B4 31 24 2 / 0.91 5.17 0.48

B5 E 31 24 2 / 0.91 5.17 0.48

26.14 2.43

F

H D A ()

A

(2)1 37 32 D 2.1 8.22 0.76

2 22 11 D H C 0.91 1.68 0.16

3 58 53 B 2.1 21.35 1.98

4 13 54 B 4 2.1 19.50 1.81

5 E 37 32 D 2.1 8.22 0.76

6 22 38.5 B 0.91 5.88 0.55

7 61 40 D 2.1 16.94 1.57

8 60 80

G D D

0.91 33.33 3.10

( ) 115 13 10 70


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A

()

A

(2)

B (B G) 348.00 32.33

B (A G) 398.86 37.06

F 867.57 80.60

2 F 872.79 81.08

1) . A . A 2013. A

://..//.

2) C B . G. A 2013. A ://..//.

3) C . D. A 2013. A ://../2496.

4) G . A . A 2013. A ://../.?=131


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&

CAD .


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B B G 2.7

B A G 1.2

F 4.1

F 16

35

F B 0.32

F B F 1.1

B B G

C B 10" 1.2

E 1.5

2.7

B A G

C B 10" 1.2

1.2


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F

0.75" 0.15

0.5" 0.63

B I /

26" F 6" 19.2

B 6I 0

D 0.5" 0.45

20.43

B I /

26" F 12" 26.4B I /

26" F 6" 13.2

B 6I 0

D 0.5" 0.45

40.05

F B


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Contents Page

Summary of Results . 2

Methods .. 3

Discussion 4

Reference .. 5

Appendix 1. . 6

Appendix 2. .. 10


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Table 2. Comparison of Heat loss calculation to Baseline

4%

11%

7%

2%

1%

54%

11%

2%3%

5%

.

B

A

0.91

2.1

A

Summary of Results

Table 1. Heat loss Calculation by month (*JulyandAugustexcluded because no heat loss to outside)

Jan Feb Mar Apr May June Sept Oct Nov Dec Total

MJ / Month 8,646 7,627 6,499 5,233 4,262 3,286 ,3655 4,886 5,703 6,881 56,678

% 15 13 11 9 8 6 6 9 10 12 100


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Methods

Heat loss calculation

The heat loss calculation done by using the heat loss equation to calculate the energy loss per

month for every section (wall, window, slab), then summing it to get the annual value. This

annual value was then divided by floor area of the house (253 m^2) to get the Energy/m^2. July

and August months were excluded from these calculations because they are considered cooling

seasons.

Heat loss equation Q = A*(1/R)*T

- For wall sections exposed to air T was taken as the difference of average monthly outdoortemperature given by Environment Canada and indoor temperature (21 C).

- For slab on gradethe T = 7C (ground temp) 21C (inside temp) = 14 C- ForBasement wall section below groundthe T was taken as (7 C + average outside air

temp)/2

-The air infiltration heat loss used the equation: Q = 0.018*V*T*ACH

- V is the volume of the house, assumed to be a rectangle with volume 22,548 ft^3- ACH (air change per hour): assumed to be 2.5

A sensitivity analysis was done on model by testing different assumptions such as varying indoor

air temp between 19 C and 23 C and varying ACH value to 2.5 (Normal leaks house),5(Medium leak), and 10 (very Leaky House). Below is the Scenario Summary.


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Cost/m^2. The sum volume of natural gas consumed for 2011 and 2012 averaged to find the

annual volume for natural gas.

Annual Energy (MJ) = ( *38MJ/m^3 * PEF

Annual Energy(kwh)/m^2 = Annual Energy (MJ)/ 3.6 /253 m^2

Annual Cost = [Annual Energy (MJ) * Current Marginal Cost + 12 (month)*( $20 + $23.35 +

$17.24)] * 1.13 = $1710

Annual cost/m^2 = Annual cost / 253 m^2

A sensitivity analysis was done on varying water heating baseline(m^3) per month to see the

effects it would have on Annual Energy/m^2. Below is the Scenario Summary.

.

:

80

40

100

() 67 80 40 100

(/) 70 63 84 53

$810.98 $792.06 $850.26 $762.96

Discussion

With present analysis the Heat loss calculations predict annual energy per of about 36


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There are numerous sources of error in the analysis that wasnt included in this report but should

be considered in the future. They include heat loss due to window/door opening, temperature

fluctuation by year, energy gain by people, and energy gain by appliances.


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Appendix 1: Heat loss Calculation

A

4.2 31 21 25.2 45

3.2 28 21 24.2 44

1.3 31 21 19.7 35

A 7.6 30 21 13.4 24

14.2 31 21 6.8 12

19.2 30 21 1.8 3

22.2 31 21

A 21.3 31 21

17 30 21 4 7

10.6 31 21 10.4 19

4.8 30 21 16.2 29

0.9 31 21 21.9 39

A

()

A

(2)

B

348 32.33 2.7 0.37037037181,238 157,203 141,682

A

398.8

6 37.06 1.2 0.833333333

467,384 405,401 365,376

867.5

7 80.6 4.1 0.243902439297,547 258,087 232,606

872.776 705 66 533 59 964


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$87.12 $84.65 $83.06

A () A (2) A

B 348 32.33 2.7 0.37037037 93,264 48,906

A 398.86 37.06 1.2 0.83333333 240,513 126,120

867.57 80.6 4.1 0.24390244 153,116 80,290

872.79 81.08 16 0.0625 39,472 20,698

1128.6 104.85 35 0.0285714323,333 12,235

525 48.77 0.32 3.1251,187,156 622,519

383.8 35.66 1.1 0.90909091 252,471 132,390

0.9167.44 6.27 0.91 1.0989011 53,626 28,120

2.1

223.84 20.80 2.1 0.47619048 77,129 40,445

A 22548 734,208 385,003

B 2,854,287 1,496,725

837 439

3011 1579


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383.8 35.66 1.1 0.90909091 33,914 75,364

0.9167.44 6.27 0.91 1.0989011 7,203 16,008

2.1223.84 20.80 2.1 0.47619048 10,361 23,024

A 22548 98,625 219,167

B 383,412 852,026

112 250

405 899

$69.79 $71.36

A () A (2)

B 348 32.33 2.7 0.37037037 74,797 112,752 A 398.86 37.06 1.2 0.83333333 192,889 290,769

867.57 80.6 4.1 0.24390244 122,797 185,110

872.79 81.08 16 0.0625 31,656 47,720

1128.6 104.85 35 0.02857143 18,713 28,209

525 48.77 0.32 3.125 952,088 1,435,219

383.8 35.66 1.1 0.90909091 202,479 305,226


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872.79 81.08 16 0.0625 66,660 426,493

1128.6 104.85 35 0.02857143 39,405 252,112

525 48.77 0.32 3.125 2,004,877 12,827,194

383.8 35.66 1.1 0.90909091 426,374 2,727,939

0.9167.44 6.27 0.91 1.0989011 90,564 579,427

2.1223.84 20.80 2.1 0.47619048 130,256 833,376

A 22548 1,239,935 7,933,099

B 4,820,336 30,840,496

1413 9038

5086 32538

$84.68 $788.54

Appendix 2. Baseline calculation

() = 38/3

1 32 514 19532 = 1.0057

2 31 512 19456 B (3)

3 27 271 10298 A (2)

( 2013 )

( / )


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7 31 47 1796

8 31 74 2828

9 29 39 149010 32 151 5732

11 29 197 7490

(3) ()

12 28 296 11236 1453 55206.0504


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Tutorial #3

HOT 2000 Modeling and Discussion

Paul Furbacher 995940102, Brett Sagert 997233845, Shuliang (Peter) Sun 996007440

Discussion

After completing the HOT 2000 model and comparing it to the energy bills and hand

calculations, in the previous assignment, we noticed significant discrepancies. In order to discuss

possible discrepancies in further details we created a summary table as shown below for use

when referencing the data.

Table 1. Energy consumption of various models

Energy Type Bills HOT2000 Hand Calculation

Natural Gas (m3) 1900 6815 1725

Electricity (kWh) 13200 1278 -Hot Water (MJ) 25000 23400 -

As we can see given the results from the HOT 2000 model the natural gas consumption was

6815m^3. This result however is about 4 times greater than our calculated value and 3.5 times

greater than what the energy bill baseline showed. For the electricity consumption generated by

the model we saw consumption values far below the actual energy bills. Possible reasons for

discrepancy could be attributed to errors in modeling and what we used in reality. The domestic

hot water use on the other hand was modeled very accurately when compared to the bills as there

was only a small difference in the values


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When modeling the house in HOT 2000, the team put as much details into the model that was

possible based on the set options, in order to model the house as accurately as possible. Many of

these values were determined from the house plans such as the house area, window sizes,orientation, and others such values. Inputs between known values and modeled values differed

with respects such as the R values for windows and ventilation. The reasoning behind this was

due to the software automatically assigning R values for the windows based on code standards

for the give window dimensions. The program also had set values for the slab R values based on

set program choices which created a discrepancy between the model and our calculation. In the

table below we have noted the differences in R values between the model calculations and our

calculations.

Table 2. Model R values compared to calculation R values

Component Model R Calculation R

Sliding Door 1.13 2.1

Bay Window 1.34 2.1

Typical Window 1.1 2.1

Basement 1.96

Calculated

Separately

Table 3. Represents a break down component usage generated by HOT 2000

Component Annual Use (MJ) Percent of Total

Heating 235,003.67 79%Cooling 8,924.19 3%

Hot Water 23,797.84 8%

Li ht 5 949 46 2%


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Figure 1. Shows a pie chart representing the components of the Annual Heat Loss generated by

HOT 2000

Figure 2. Shows the annual heating loss by section generated from the hand calculations

3%

8% 5%

1%1%

3%

26%

COMPONENTS OF ANNUAL HEAT LOSS

Wall Section Below Grade

Wall Section Above Grade

Wall Section Main Floor

Wall Section Second Floor

Floor Section Roof

Floor Section Slab on Grade


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Civ 516 Sustainable

Buildings


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Abstract

Through employing various techniques and utilizing different materials the team was able tosignificantly bring down the energy consumption of the house in total quality and energy per unit

area. The retrofit was divided into two phases. Phase 1 concerned all building envelope related

retrofit measures. This included insulation, windows, and doors. Phase 2 concerned appliances

and machine related retrofit measures. The results according to HOT2000 simulation were

promising as the energy consumption after retrofit was decreased significantly. The energy

usage per unit area decreased from 301 ekwh/(m^2) before retrofit to 144.4 ekwh/(m^2). Which

ammounts to savings of 156 ewh/m^2.

Methods

Table 1.Phase 1Evelope retrofit

Insulation

Foundation Main Floor wall Second Floor

-Insulate floor with 3 XPS R9-Insulate wall with 4 XP R16

-Insulate wall with 2 XPS R9-Repace 1 air gap in wall

section with R5 spray

-Unchanged

Window upgrades

Replace with double glazed 13mm argon fill

Air tightness

Reseal doors and install operatable seals to Chimney

Table 2.Phase 2Appliance and machinery retrofitRetrofit Savings


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Phantom Load Reduce the phantom load by

unplugging appliance when

not in use.

Study shows apppliances

such as desktop computer,

micro-wave, and Televisionconsume between 0.8W2.6

W of phaton load [1].

Exterior Insulation of

basement wall

Increase R value of Basement Expensive, would need to

excavate around basement.

Nested Thermal Envelope Adds layers of insulation and

allows one part of buliding tobe heated at one time

Inpractical for house as the

bedrooms are located inbasement, and second floor.

Results

The results from HOT2000 show a significant reduction in energy consumption before and after

retrofit. Below is a table showing total Base Consumption(before) and Projected

Consumption(after).

Table 4. Saving in energy consumption (Before vs. After)

Energy (GJ)

Energy

(ekWh/m2)

Base Consumption

(before) 274.2 301.1

Total Savings 142.7 156.7

Projected

Consumption (after) 131.5 144.4

Total Energy Consumption


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Main floor Wall

Insulation 32.5 35.7

Window Upgrades 4.6 5.1Air Tightness 38.9 42.7

Phase 1 Total Savings 132.1 145.0

Projected Heating

Load 68.6 75

Table 6. Phase 2 energy savings

Phase 2

Component Annual Energy Savings (GJ) Savings (ekWh/m2)Domestic Hot Water 8.5 9.3

LED Lighting 1.6 1.8

Stove Upgrade 0.5 0.5

Total Savings 10.6 11.6

Projected Loads 60.1 66.0

Graph 1. Break down of savings by component


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Discussion

Overall the retrofit can be considered successful according to the simulation run by HOT 2000.

The energy intensity of the house decreased 52% from over 301kwh/m^2(before) to 144 kwh/m^2

(after). Phase 1 had the biggest impact on the retrofit project.

From graph 1 it shows that building envelope retrofits accounts for 90 percent of total savings

while phase 2 retrofit accounts for the other 10 percent. The reasons for the discrepancy are that

phase 1 retrofits are larger in volume and energy consumption compared to phase 2 retrofitsconsisting of appliances and machinery. In particular insulating the foundation had the biggest

impact (39%) on savings. The reason for this is the foundation was a 4 slab on grade which

offered very poor insulating values R=0.32 [2]. After retrofit the R value increased significantly

(R=9.32) to cut down on heat loss from the basement.

The air tightness accounts for the second biggest saving component (24.7%) as the ACH

decreased from 10 to 3. This means the natural gas burner will spend less energy providing heatto raise the air temperature which is in circulation.

Next the team may seek to implement some of the retrofits and examine the effects it has on the

energy consumption of the house.


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Civ 516 Sustainable

Buildings


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Contents

Executive Summary ....................................................................................................................................... 2

Retrofit Program Summary ........................................................................................................................... 3

Applicable Incentives .................................................................................................................................... 7

Technical Summary ....................................................................................................................................... 8

Building Envelope ...................................................................................................................................... 8

Foundation Insulation ........................................................................................................................... 8

Exterior Insulation ................................................................................................................................. 8

Windows ............................................................................................................................................... 8

Water Conservation .................................................................................................................................. 9

High Efficiency Flush Toilet ................................................................................................................... 9

Showerhead .......................................................................................................................................... 9

Washer .................................................................................................................................................. 9

Electrical Systems .................................................................................................................................... 10

Lighting ................................................................................................................................................ 10

Mechanical Systems ................................................................................................................................ 10

Domestic Hot Water ........................................................................................................................... 10

Stove ................................................................................................................................................... 10

References .................................................................................................................................................. 12


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Executive Summary

Over the course of this project we have analyzed the potential retrofit feasibility of a

house located in the East York region of Toronto. The house was originally built in 1948 as a

single dwelling bungalow but has had several upgrades and additions since then, mainly the

addition of the second floor. Currently the building has poor insulation levels in the basements

floors as well as the main floor walls and basement walls. We aim to fix this major problem as

well as upgrade other aspects of the house in the process.

Using the modeling program Hot2000 we were able to calculate the initial base load of

the house. From this point we proposed several retrofits that would bring the annual gross space

heating load down to 75 ekWh/m2and the total house consumption as close to 100 ekWh/m2as

possible. By introducing retrofits to the buildings envelope as well as the mechanical and

electrical systems we were able to bring the houses consumption down to an annual total of 144

ekWh/m2. Although this total is higher than we were hoping to achieve, the reduction in

building consumption was reduced by more than half of the base load consumption.

Another goal for this retrofit project was to then analyze the retrofits from a cost basis


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Once we determined the retrofits that we wanted to implement into the project we created

another model using the Hot2000 program that encompassed all of the retrofits. When comparing

the baseline model with the upgraded model we are able to see the potential savings of having

upgraded the house. Figure 3 and 4 represent the components of the energy consumed for the

upgraded house.

Figure 3Annual Upgraded Break Down of Energy Consumption 144.4 ekWh/m2


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Energy (GJ) Energy (ekWh/m2)

Base Consumption (Before) 274.2 301.1

Predicted Total Savings 142.7 156.7Projected Consumption (After) 131.5 144.4

Figure 5Savings in Energy Consumption

The amount of money that can be directly saved per year due to the difference in energy

consumption can be calculated when we split the energy consumed into the three different

energy sources. For this step we wanted to show the savings form the bills and how long it would

take to repay the loan if we were to implement all of the projects. Figure 6 below represents the

savings per year as well as the amount of money required to repay the loan of $42,000, for which

the capital calculations are given in Appendix 1 These calculations we done assuming that the

301

144

0 50 100 150 200 250 300 350

Base

Upgraded

Total Energy Consumption Projections

ekWh/m2


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Annual

Reduction Units Loan

Electricity 5040 eKwh $42,000 Loan RepaidNG 48500 eKwh YES

Water 120 m3

Electricity Price Natural Gas Water Price0.13 $/kWh 0.04 $/ekWh 2.62 $/m3

Year

Electricity

Savings NG Savings

Water

Savings Interest Repayment Loan Principal

1 $668.30 $1,978.80 $320.69 $(1,260.00) $1,707.79 $(40,292.21)

2 $681.67 $2,018.38 $327.10 $(1,208.77) $1,818.38 $(38,473.83)3 $695.30 $2,058.74 $333.64 $(1,154.21) $1,933.48 $(36,540.35)

4 $709.21 $2,099.92 $340.32 $(1,096.21) $2,053.23 $(34,487.12)

5 $723.39 $2,141.92 $347.12 $(1,034.61) $2,177.82 $(32,309.30)

6 $737.86 $2,184.76 $354.07 $(969.28) $2,307.40 $(30,001.89)

7 $752.62 $2,228.45 $361.15 $(900.06) $2,442.16 $(27,559.73)

8 $767.67 $2,273.02 $368.37 $(826.79) $2,582.27 $(24,977.47)

9 $783.02 $2,318.48 $375.74 $(749.32) $2,727.92 $(22,249.55)10 $798.69 $2,364.85 $383.25 $(667.49) $2,879.30 $(19,370.25)

11 $814.66 $2,412.15 $390.92 $(581.11) $3,036.61 $(16,333.63)

$ $ $ $( ) $ $( )


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Figure 7Representative Graph of Loan Payback over 20 Year Period

Applicable Incentives

The retrofits proposed will produce a profit over a 20-year period, but may also be

eligible for incentive programs that can help to reduce the initial capital cost of upgrading. The

Ontario Power Authority is offering coupons (until April 28th, 2013) for $5 off ENERGY

STAR qualified general purpose and specialty LEDs, resulting in savings of $250 for our

house if utilized. Unfortunately, incentives such as the City of Toronto Sustainable Energy

$(40,000.00)

$(30,000.00)

$(20,000.00)

$(10,000.00)

$-

$10,000.00

$20,000.00

Capital


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Technical Summary

Building Envelope

Foundation Insulation

The house foundation will be enhanced with XPS insulation installed on the interior wall

and slab surfaces. As the foundation accounts for a large percentage of the home's heat loss, 4" of

insulation will be added to the wall. 3" will be added to the floor slab to strike a balance between

insulation and headroom remaining in the basement after the retrofit. The recommended product

is Owens CorningFoamular F-150, which is available in many home improvement stores. The

XPS sections have tongue and groove edges, and will therefore be interlocked during

installation. Each section will be held in place by flush concrete anchor bolts and covered with

the homeowner's choice of wall and flooring material.

Exterior Insulation

The main floor wall will have 2" of XPS insulation added on to the exterior brick finish

to improve the overall wall performance. The upper story of the building is currently finished

with stucco which will be extended down to the foundation level When installing the stucco the


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argon filled units that, when installed properly, also provide minimal air leakage. The

recommended window replacement is the American Craftsman 70 double hung window, which

is readily available from home improvement stores. This retrofit is double-pronged in that it also

requires careful and competent installation to ensure proper window seals (a significant amount

of heat loss occurs by air infiltration, of which windows account for the vast majority).

Water Conservation

High Efficiency Flush Toilet(x3)

The Kohler Highline 2-piece 1.28 GPF high efficiency toilet provides savings of up to

16,500 gallons per year compared to the old 3.5 GPF toilets. The canister flush valve provides

consistent water volume and velocity for each flush, while the class five flushing technology

provides bulk waste flushing performance and good bowl cleanliness. It meets the flushing

performance requirements established by U.S. Environmental Protection Agency's Water Sense

program.

Showerhead (x2)

The new MOEN Banbury 5-Spray 4" showerhead 2.5 GPM replacing the old showerhead


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Washer

The old washer will be replaced with a high efficiency E.S. LG Electronics Front Load

Washer. Front load washers offer significant savings compared to top loaders. The extra-large 4

cu. Ft capacity means fewer loads, saving time and energy. The washer was awarded 2012

ENERGY STAR most efficient designation.

Electrical Systems

Lighting(x50)

The Philips 22-Watt (100W) A21 LED light bulb uses significantly less energy while

providing the same amount of light when compared to traditional incandescent light bulbs.

These LED lights meet federal requirements for energy efficiency to qualify as ENERGY

STAR Rated, and are exceedingly simple to install.

Mechanical Systems

Domestic Hot Water

The existing induced fan natural gas heater will be replaced with a 95% efficiency


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References

XPSfound athttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+All

American Craftsman 70found athttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-

1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+All

AO Smith GDHE-50-NGfound athttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gas

Power-Pipe R3-30found athttp://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916

Samsung NX583found athttp://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098

Philips 22-Watt (100W) A21found athttp://www.canadiantire.ca/AST/browse/3/HouseHome/Lighting/CompactFluorescentBulbs.jsp

Kohler Highline 2-piecefound athttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+All
http://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098http://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098http://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098http://www.canadiantire.ca/AST/browse/3/HouseHome/Lighting/CompactFluorescentBulbs.jsphttp://www.canadiantire.ca/AST/browse/3/HouseHome/Lighting/CompactFluorescentBulbs.jsphttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=toliet&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.canadiantire.ca/AST/browse/3/HouseHome/Lighting/CompactFluorescentBulbs.jsphttp://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098http://www.homedepot.com/p/t/203673098?catalogId=10053&langId=-1&keyword=stove&storeId=10051&superSkuId=203669993&N=5yc1v&R=203673098http://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.homedepot.ca/product/power-pipe-r3-30-drain-water-heat-recovery-unit/910916http://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.pexsupply.com/AO-Smith-GDHE-50-NG-50-Gallon-100000-BTU-Vertex-100-Power-Direct-Vent-Residential-Gas-Water-Heater-Nat-Gashttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=double+glazed%20argon%20windows&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+Allhttp://www.homedepot.com/webapp/catalog/servlet/Search?storeId=10051&langId=-1&catalogId=10053&keyword=insulation+xps&Ns=None&Ntpr=1&Ntpc=1&selectedCatgry=Search+All


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Appendix 1

Total Time Taken for Retrofit = 42 days based on an 8 hour day.

Retrofit

Material

Cost

Number

of hours

Labour

Cost

Material +

Labour Cost

Natural gas

Energy

Savings

(Kwh)

Electricity

Energy

Savings

(Kwh)

Water

Savings

(gallons)

Cost($)/

Saving

unit(kw

h/gal)

Building

Envelope XPS 3" 2760.00 97 7728.00 10584.60 15646 0.034

XPS 4" 477.50 17 1337.00 1831.21 9068 0.010

XPS 2" 191.00 7 534.80 732.48 9068 0.004

Double glazed

argon fill 2850.00 100 7980.00 10929.75 1295 0.422

Air tightening 0.00 0 0.00 0.00 10846 0.000

Mechanical Condensing Boiler 2000.00 70 5600.00 7670.00 2584 0.148+ Drain heat

recovery 555 20 1554.00 2128.43

Gas stove (x1) 1100.00 6 480 1580.00 360 0.586

Electricity

Phillips LED

lighting (x50) 2750.00 0.00 0.00 2750.00 4680 0.029

Water

Kohler high EFF

flush toilet (x3) 534 6 480 1020.00 7992 0.006

Moen Banbury

showerhead (x2) 64 0 0 64.00 23775 0.0001

E.S. LG ElectronicsFront Load

Washer (x1) 889 6 480 1369.00 33 6600 0.007

Totals 14170.5 329 26173.8 40344.3 48507 5073 38367

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