Apparatus and method for determining the air leakage characteris

Details Apparatus and method for determining the air leakage characteris Apparatus and method for determining the air leakage characteris

1982-05-03

1985-05-21

Goldberg, Gerald

Measuring and testing

With fluid pressure

Leakage

G01M 326

Patent

active

045178267

ABSTRACT:
An apparatus and method for measuring the air leakage rate of a structure, such as a building, for the purpose of assessing the need to add caulking, weatherstripping or the like to the building to minimize energy loss. The equipment includes a panel which may conveniently fit into a doorway or window frame of the building and seal the same against air leakage except for an air pathway passing through the panel. The pathway has a fan or the like for causing air to flow through the pathway, preferably from the inside to the outside to create a partial vacuum inside the building. Pressure sensors are provided to measure the partial vacuum and the air pressure inside the air pathway. From these measurements and a knowledge of the total internal volume of the building structure, the air leakage rate of the structure can be determined and expressed, for example, as a number of total volume changes per hour. The apparatus is portable and can be used for almost any building without structural modification.

REFERENCES:
patent: 3807219 (1974-04-01), Wallskog
patent: 3918291 (1975-11-01), Pauly et al.
patent: 4055074 (1977-10-01), Thimons et al.
patent: 4114424 (1978-09-01), Johnson
patent: 4363236 (1982-12-01), Meyers
Blomsterberg, A. K. et al., Approaches to Evaluation of Air Infiltration Energy Losses in Buildings, ASHRAE Transactions, vol. 85, part 1, 1979.
National Geographic Magazine, "Special Report in the Public Interest-Energy", Feb. 1981, pp. 48 and 49.

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