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Title: Exposure chamber

Abstract

A chamber for exposing animals, plants, or materials to air containing gases or aerosols is so constructed that catch pans for animal excrement, for example, serve to aid the uniform distribution of air throughout the chamber instead of constituting obstacles as has been the case in prior animal exposure chambers. The chamber comprises the usual imperforate top, bottom and side walls. Within the chamber, cages and their associated pans are arranged in two columns. The pans are spaced horizontally from the walls of the chamber in all directions. Corresponding pans of the two columns are also spaced horizontally from each other. Preferably the pans of one column are also spaced vertically from corresponding pans of the other column. Air is introduced into the top of the chamber and withdrawn from the bottom. The general flow of air is therefore vertical. The effect of the horizontal pans is based on the fact that a gas flowing past the edge of a flat plate that is perpendicular to the flow forms a wave on the upstream side of the plate. Air flows downwardly between the chamber walls and the outer edges of the pan. It also flows downwardly between the inner edgesmore » of the pans of the two columns. It has been found that when the air carries aerosol particles, these particles are substantially uniformly distributed throughout the chamber.« less

Inventors:
 [1]
  1. (Kennewick, WA)
Issue Date:
Research Org.:
BATTELLE MEMORIAL INSTITUTE
OSTI Identifier:
863628
Patent Number(s):
4216741
Assignee:
Hazleton Systems, Inc. (Aberdeen, MD) PNNL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
exposure; chamber; exposing; animals; plants; materials; air; containing; gases; aerosols; constructed; catch; pans; animal; excrement; example; serve; uniform; distribution; throughout; constituting; obstacles; prior; chambers; comprises; imperforate; top; bottom; walls; cages; associated; arranged; columns; spaced; horizontally; directions; corresponding; preferably; column; vertically; introduced; withdrawn; flow; vertical; effect; horizontal; based; gas; flowing; past; edge; flat; plate; perpendicular; forms; wave; upstream; flows; downwardly; outer; edges; pan; inner; found; carries; aerosol; particles; substantially; uniformly; distributed; uniformly distribute; aerosol particle; containing gases; air flows; substantially uniformly; flat plate; aerosol particles; gas flow; substantially uniform; air flow; uniformly distributed; containing gas; chamber wall; gas flowing; air containing; distributed throughout; uniform distribution; outer edge; spaced vertically; outer edges; flowing past; flows downwardly; exposure chamber; inner edge; chamber walls; catch pans; /119/47/62/D25/

Citation Formats

Moss, Owen R. Exposure chamber. United States: N. p., 1980. Web.
Moss, Owen R. Exposure chamber. United States.
Moss, Owen R. Tue . "Exposure chamber". United States. https://www.osti.gov/servlets/purl/863628.
@article{osti_863628,
title = {Exposure chamber},
author = {Moss, Owen R.},
abstractNote = {A chamber for exposing animals, plants, or materials to air containing gases or aerosols is so constructed that catch pans for animal excrement, for example, serve to aid the uniform distribution of air throughout the chamber instead of constituting obstacles as has been the case in prior animal exposure chambers. The chamber comprises the usual imperforate top, bottom and side walls. Within the chamber, cages and their associated pans are arranged in two columns. The pans are spaced horizontally from the walls of the chamber in all directions. Corresponding pans of the two columns are also spaced horizontally from each other. Preferably the pans of one column are also spaced vertically from corresponding pans of the other column. Air is introduced into the top of the chamber and withdrawn from the bottom. The general flow of air is therefore vertical. The effect of the horizontal pans is based on the fact that a gas flowing past the edge of a flat plate that is perpendicular to the flow forms a wave on the upstream side of the plate. Air flows downwardly between the chamber walls and the outer edges of the pan. It also flows downwardly between the inner edges of the pans of the two columns. It has been found that when the air carries aerosol particles, these particles are substantially uniformly distributed throughout the chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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