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Infiltration - Heat Losses from Buildings

Estimated infiltration heat losses from buildings.

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Estimated heat loss from

Offices, apartments, hotels ...
Entrance halls, vestibules ...
Industrial buildings ...
Houses ..
Public buildings ..

by infiltration:

Infiltration Heat Loss from Buildings - Chart (pdf)

Infiltration rates through various Types of Wall Constructions

Infiltration Rates (cu.ft per foot of crack per hr.)
Wall Type	Wind Velocity (mph)
Wall Type	5	10	15	20	25	30
Frame Wall with lath and plaster or wallboard	0.03	0.07	0.13	0.18	0.23	0.26
Brick Wall, 8 1/2" plain	2	4	8	12	19	23
Brick Wall, 8 1/2" plain with plaster or wallboard	0.02	0.04	0.07	0.11	0.16	0.24
Brick Wall, 13" plain	1	4	7	12	16	21
Brick Wall, 13" plain with plaster or wallboard	0.01	0.01	0.03	0.04	0.07	0.10

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Related Topics

Heating - Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more.

Related Documents

Air Change Rates in typical Rooms and Buildings - Fresh air (make up air) rquirements - or recommended air change rates (ACH) for typical rooms and buildings like auditoriums, kitchens, churches and more.
Building Elements - Heat Loss vs. Thermal Resistivity - Thermal resistance in building elements like walls, floors and roofs above and below the ground.
Heat Loss from Buildings - Overall heat transfer loss from buildings - transmission, ventilation and infiltration.
Natural Draft - Air Flow Volume and Velocity - Air flow - volume and velocity - due to stack or flue effect caused by indoor hot and outdoor cold temperature difference.
Staircases Calculator - Calculate steps, unit rise and run in a staircase.
Transmission Heat Loss through Building Elements - Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units.

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