Multiple-blower relative humidity controlled test chamber

Details Multiple-blower relative humidity controlled test chamber Multiple-blower relative humidity controlled test chamber

2005-05-17

2005-05-17

Raevis, Robert (Department: 2856)

Measuring and testing

Simulated environment

Reexamination Certificate

active

06892591

ABSTRACT:
An accelerated weathering apparatus includes a test chamber (30), a specimen supporting means (34), a light source (60) powered by a power source controlled by a ballast, at least one chamber air temperature sensor (26), a black panel temperature sensor (36), and a multiple blower system and control means (52). A first blower (12) draws and circulates outside or fresh air and as second blower (46) optionally draws recirculated air into an air mixing duct. The speeds of the fresh air and recirculated air blowers are independently regulated and controlled by a blower controller based on the chamber air temperature and black panel temperature, respectively. In addition, a humidifier (18) and humidity controller (20) regulates humidity within the system as required.

REFERENCES:
patent: 3488681 (1970-01-01), Mita
patent: 3886791 (1975-06-01), Grossman
patent: 4704903 (1987-11-01), Suga et al.
patent: 4760748 (1988-08-01), Katayanagi et al.
patent: 4843893 (1989-07-01), Huber et al.

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