GB865433A - Monitoring system for determining the heavy water content of air - Google Patents
Monitoring system for determining the heavy water content of airInfo
- Publication number
- GB865433A GB865433A GB15027/59A GB1502759A GB865433A GB 865433 A GB865433 A GB 865433A GB 15027/59 A GB15027/59 A GB 15027/59A GB 1502759 A GB1502759 A GB 1502759A GB 865433 A GB865433 A GB 865433A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- water
- infra
- red
- heavy water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 title abstract 15
- 238000012544 monitoring process Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 8
- 230000009102 absorption Effects 0.000 abstract 4
- 238000010521 absorption reaction Methods 0.000 abstract 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052805 deuterium Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 239000010980 sapphire Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 1
- 239000004291 sulphur dioxide Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
865,433. Infra-red absorption measurement. ATOMIC ENERGY OF CANADA Ltd. May 1, 1959 [June 2, 1958; Jan. 27, 1959], No. 15027/59. Class 40(3) A monitoring system for providing an indication of the heavy water content of air comprises means for condensing water vapour from the air, means for collecting the condensate, and means for estimating the heavy water content of the condensate by measuring the degree of absorption of infra-red radiation in the neighbourhood of the wavelength of 4 microns, the absorption wavelength of the deuterium oxide molecules (D 2 O and HDO). The infra-red analyser may be the type described in U.S.A. Specifications 2,767,321 and 2,754,424 in which the infra-red absorptions of two light paths are compared with the aid of differential-pressure gas detector operating a capacitor to produce an electrical output. One light path includes a liquid cell containing ordinary water with the normal content of heavy water, and the other includes a cell through which is passed the condensate. For the purpose of the present invention, the normal cell windows of quartz are replaced by synthetic sapphire to allow the transmission of a wavelength of 4 microns, and the detector gas is replaced by deuterated ammonia or sulphur dioxide which absorb at a wavelength of 4 microns. The system of the invention determines directly the deuterium oxide part of the heavy water; the tritrium oxide part may be derived from a knowledge of the tritrium to deuterium ratio of the source providing the heavy water in the air. The arrangement for condensing the water vapour may be as shown in Figs. 7 and 8 where the air to be tested is taken in by a compressor 1 and first raised to a pressure of 5-10 atomospheres. Thereafter it is cooled by passage through first and second heat exchangers 2 and 3 to cause condensation of the water vapour. The water and air are separated in unit 4, which is constructed as shown more fully in Fig. 8, the air passing out through a pipe 8 whilst the water passes to the infra-red analyser 11 through a sintered glass disc 9 which serves to remove air bubbles. A pipe 16 by-passes the glass disc to equalize the pressure on each side and eliminates any tendency for air bubbles to be forced through the disc. Water from the bottom of the analyser 11 passes through a valve constriction 17 and is ejected from the apparatus via valve 19 by air flowing through pipe 19. The majority of the air however passes to a device 13 which adds oil droplets to aid lubrication and is then employed to do work in an air motor 14 driving a fan 15 for the first heat exchanger, the resulting cooled air being used for cooling in the second heat exchanger 3. A modified arrangement, Fig. 1 (not shown), dispenses with pipes and valves 17-19 and includes a filter before oiler 13 constructed as described in U.S.A. Specification 2,726,732 to remove the water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US865433XA | 1958-06-02 | 1958-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB865433A true GB865433A (en) | 1961-04-19 |
Family
ID=22199272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15027/59A Expired GB865433A (en) | 1958-06-02 | 1959-05-01 | Monitoring system for determining the heavy water content of air |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB865433A (en) |
-
1959
- 1959-05-01 GB GB15027/59A patent/GB865433A/en not_active Expired
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