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79 Heathdale
Road |
Toronto, Ontario |
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Heat Loss Calulations
For Proposed Renovations |
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Winter design temperature toronto = -18F |
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Desired Indoor Winter temperature |
708F or 218C |
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t =
temperature difference between indoor and outdoor air = 708-(-18) = 718F |
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q= total heat loss
through building assembly in (BTU/hr) |
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U = Coefficient of heat transmission BTU/hr-ft2-8F |
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A = Area of building material or assembly
being considered ft2 |
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FIRST FLOOR ADDITIONS |
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See Drawing A4 |
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U value |
Area |
(A) |
q=(UxA)(t) |
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Window wall - south face of family room |
0.37 |
195 |
ft2 |
5122.65 |
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Brick veneer wall |
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0.05 |
12 |
ft2 |
42.60 |
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Wall separating garage from bathroom |
0.04 |
122 |
ft2 |
346.48 |
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Roof over curved bay addition |
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0.04 |
84 |
ft2 |
238.56 |
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Entry door from garage to house |
0.25 |
21 |
ft2 |
372.75 |
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Total heat loss first floor additions |
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6123.04 |
BTU/hr |
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SECOND FLOOR
OFFICE |
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See Drawing A5 |
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U value |
Area |
(A) |
q=(UxA)(t) |
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Stucco walls (2"x6"insulated frame) |
0.04 |
256 |
ft2 |
727.04 |
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Window 36"x48" |
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0.35 |
12 |
ft2 |
298.20 |
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Second floor door with sidelites 48"x84" |
0.40 |
28 |
ft2 |
795.20 |
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Roof |
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0.04 |
155 |
ft2 |
440.20 |
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Total heat loss second floor office |
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2260.64 |
BTU/hr |
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NOTES |
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| 1 |
Existing First floor family room is heated by
a built in fireplace and electric baseboard heaters.eaters |
| 2 |
The second floor will be heated by electric
baseboard heaters |
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| 3 |
The new bathroom adjacent to the east wall of
the first floor will be heated with a radiant floor
systemtor |
| 4 |
The garage is unheated but insulated which will account for a lower
temperature differential between ntial |
| 5 |
the
garage-side and the bathroom-side of the new bathroom wall. |
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