Theoretical and experimental behaviour of a thermal conductivity detecter for the determination of the ortho/para hydrogen composition of gas mixtures in the temperature-jump region | Zendy

David Mitchell | Zendy; D. J. Le Roy | Zendy

Open Access

Theoretical and experimental behaviour of a thermal conductivity detecter for the determination of the ortho/para hydrogen composition of gas mixtures in the temperature-jump region

Author(s) -

David Mitchell,

D. J. Le Roy

Publication year - 1978

Publication title -

canadian journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.323

H-Index - 68

eISSN - 1480-3291

pISSN - 0008-4042

DOI - 10.1139/v78-295

Subject(s) - chemistry , thermistor , hydrogen , thermodynamics , temperature jump , thermal conductivity , atmospheric temperature range , radius , analytical chemistry (journal) , helium , organic chemistry , physics , computer security , quantum mechanics , computer science

The theoretical characteristics of a thermistor type thermal conductivity detector were determined for gases in the range 1 to 30 Torr, and were tested experimentally for mixtures of ortho- and para-hydrogen in pure hydrogen and in dilute mixtures of hydrogen in helium. It was found that the detector could be treated as being spherically symmetric. For temperature-jumps of up to 100 K, the total heat transfer could be adequately explained by a simplified form of the Kennard temperature-jump theory, only two parameters being required, the radius of the thermistor and its accommodation coefficient. The differential behaviour, the sensitivity to changes in ortho/para composition, required an additional parameter, the apparent gas phase relaxation rate for rotational energy.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research