Browse Prior Art Database

Multiconcentration Low Cost Environmental System

IP.com Disclosure Number: IPCOM000082694D
Original Publication Date: 1975-Jan-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Rice, DW: AUTHOR [+2]

Abstract

The environmental system of the figure combines gas mixing, multichamber configurations and a permeation chamber, to provide the assessment of the environmental stability of samples placed in the test compartment. Gases common to environmental test can be introduced into specific test chambers in specific concentration, to evaluate different test samples.

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Multiconcentration Low Cost Environmental System

The environmental system of the figure combines gas mixing, multichamber configurations and a permeation chamber, to provide the assessment of the environmental stability of samples placed in the test compartment. Gases common to environmental test can be introduced into specific test chambers in specific concentration, to evaluate different test samples.

Dry, filtered air, or gas, is entered into the system via tube 1. Flow meters 2 and 3 adjust the flow rate of the air into the permeation chamber 4 and the humidifier 5. The humidified and permeated gas is combined in the mixing chamber 6 and entered into the first chamber 7 of the test compartment. Each chamber 7-10 of the test compartment includes baffles to diffuse and linearize the gas flow, and to eliminate back diffusion from subsequent chambers.

After passing through the first chamber 7, an additional gas, such as SO(2), can be entered into a mixing area 11 from a storage tank 12 via a flow meter 13. A metered amount of gas is admitted to the mixing area 11 where it combines with the gas from the first chamber 7. This combination is passed over the samples in the second chamber 8. The gas exiting the second chamber 8 is mixed in mixing chamber 14 with a different gas admitted from gas storage tank 15 via a flow meter 16.

The successive chambers 9 and 10 contain the total gas from the previous chambers, plus the addition from the previous mixing area, such a...