Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1993-10-06
1995-02-14
Williams, Hezron E.
Measuring and testing
With fluid pressure
Dimension, shape, or size
73 38, 454341, 454909, F24F 7007, G01N 1508
Patent
active
053884442
ABSTRACT:
Testing apparatus and methods are described for determining required vacuum characteristics of a radon evacuation system, wherein the radon evacuation system is of a type which utilizes floor vent holes in a basement floor to evacuate radon from beneath the basement floor. The preferred embodiment comprises an elongated vacuum tube extending from a floor vent hole to a variable vacuum test source. Pressure and air velocity measurement devices are positioned to determine actual static pressure and air flow rate within the vacuum tube. To determine the minimum vacuum required at the floor vent hole, the vacuum test source is adjusted to produce the lowest vacuum which will maintain a negative pressure in nearby test holes. The corresponding static pressure and air flow rate are then noted from the measurement devices.
REFERENCES:
patent: 4747311 (1988-05-01), Hojoh
patent: 4885984 (1989-12-01), Franceus
patent: 4945771 (1990-08-01), Ogden
patent: 5131887 (1992-07-01), Traudt
patent: 5167366 (1992-12-01), Desmarais et al.
Mosley et al. "Application of Radon Reduction Methods", EPA/625/5-88/024, Aug. 1988, pp. 34-36,41-43,49-51.
Brock Michael J.
Williams Hezron E.
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