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Heat Loss Calculation
Application:
Excellent when determining heat loss of a building as a whole.
This
calculation will help determine a boiler size for a home.
This is to
be used as an estimation. A detailed heat loss should be provided before a new
boiler is installed.
* Heating multipliers (H.M.) BTU/Hr based on
60 degrees F Temperature Difference (T.D.)
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Windows/
Doors |
H.M. |
Wall |
H.M. |
Ceiling |
H.M. |
Floor |
H.M. |
Infiltration |
H.M. |
| Single |
67 |
No Insulation |
15 |
3 Inches |
5 |
No Insulation |
4 |
1 1/2 Air Change |
1.61 |
| Single Insulated |
41 |
2 inches |
6 |
6 Inches
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4 |
Overhang 3" |
5 |
1 Air Change |
1.07 |
| Storm |
34 |
4 inches |
5 |
9 Inches
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3 |
Overhang 6" |
3 |
3/4 Air Change |
0.81 |
| Double Insulated |
30 |
6 inches |
4 |
10 Inches
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2 |
Overhang 9" |
2 |
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Procedure
- Measure the total length of all outside walls for the house. Calculate gross
wall area by multiplying total length by height of the walls.
- Measure the window and door area. Select proper H.M.
- Record Net Wall Area=(gross wall area minus door and window area) select proper H.M.
- Measure the ceiling area and select H.M.
- Measure floor area and select H.M. ( H.M. of 4 used over unheated basement )
- Multiply Floor area by ceiling height to obtain volume of home and select proper air change factor: 1.61 for Loose House - 1.07 for Average House - .81 for Tight House.
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Enter data for heat loss calculation: |
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