Abstract

Apparatus for the measurement of the band absorption of gases at pressures up to 10 atmos and temperatures up to 1400 K is described. An optical path of 15 in. is maintained with an accuracy of 1% by a nozzle seal system which allows measurements to be made without the use of windows in the high temperature zone. Use of KBr windows for the pressure seal permits measurements to 23 μ.

© 1960 Optical Society of America

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References

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  1. H. C. Hottel, Heat Transmission, edited by W. H. McAdams (McGraw-Hill Book Company, Inc., New York, 1954), third edition, Chap. 4.
  2. S. Goodman, J. Research Natl. Bur. Standards U. S. 58, 37 (1957).
    [Crossref]
  3. J. N. Howard and et al., J. Opt. Soc. Am. 46, 186, 234, 237, 242, 452 (1956).
    [Crossref]
  4. Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
    [Crossref]
  5. H. C. Hottel and H. C. Mangelsdorf, Trans. Am. Inst. Chem. Eng. 31, 517 (1935).

1957 (1)

S. Goodman, J. Research Natl. Bur. Standards U. S. 58, 37 (1957).
[Crossref]

1956 (1)

1952 (1)

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
[Crossref]

1935 (1)

H. C. Hottel and H. C. Mangelsdorf, Trans. Am. Inst. Chem. Eng. 31, 517 (1935).

Benedict,

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
[Crossref]

Goodman, S.

S. Goodman, J. Research Natl. Bur. Standards U. S. 58, 37 (1957).
[Crossref]

Hottel, H. C.

H. C. Hottel and H. C. Mangelsdorf, Trans. Am. Inst. Chem. Eng. 31, 517 (1935).

H. C. Hottel, Heat Transmission, edited by W. H. McAdams (McGraw-Hill Book Company, Inc., New York, 1954), third edition, Chap. 4.

Howard, J. N.

Mangelsdorf, H. C.

H. C. Hottel and H. C. Mangelsdorf, Trans. Am. Inst. Chem. Eng. 31, 517 (1935).

Strong,

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
[Crossref]

Taylor,

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
[Crossref]

J. Chem. Phys. (1)

Taylor, Benedict, and Strong, J. Chem. Phys. 20, 1884 (1952).
[Crossref]

J. Opt. Soc. Am. (1)

J. Research Natl. Bur. Standards U. S. (1)

S. Goodman, J. Research Natl. Bur. Standards U. S. 58, 37 (1957).
[Crossref]

Trans. Am. Inst. Chem. Eng. (1)

H. C. Hottel and H. C. Mangelsdorf, Trans. Am. Inst. Chem. Eng. 31, 517 (1935).

Other (1)

H. C. Hottel, Heat Transmission, edited by W. H. McAdams (McGraw-Hill Book Company, Inc., New York, 1954), third edition, Chap. 4.

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Figures (8)

Fig. 1
Fig. 1

Schematic of gas containment system.

Fig. 2
Fig. 2

Nozzle arrangement.

Fig. 3
Fig. 3

Gas supply system.

Fig. 4
Fig. 4

Gas sampling system.

Fig. 5
Fig. 5

Schematic of optical system.

Fig. 6
Fig. 6

Diagram of data reduction method.

Fig. 7
Fig. 7

Concentration distribution in nozzle throat.

Fig. 8
Fig. 8

Low resolution spectra of the 15 μ, 10.4 μ, and 9.4 μ bands of carbon dioxide: path length=1.27 ft, total pressure=10 atmos, mole fraction=1.00.

Equations (3)

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A = ν 1 ν 2 α ν d ν ,
i [ Δ i N ( t t - t a ) d N / Δ i N t t d N ] Δ i ν ,
N F r = ( 1 / 2 ) ( ρ a + ρ i ) ρ a - ρ i V 2 D N g = 1.3.