On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect
In a paper published recently in the ‘Philosophical Transactions’ “On the Thermal Properties of Carbonic Acid at Low Temperatures,” Prof. C. Frewen Jenkin and Mr. D. R. Pye give, amongst other results, those obtained from a series of measurements of the Joule-Thomson effect for liquid CO 2 at variou...
Published in: | Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1098/rspa.1914.0002 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1914.0002 |
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crroyalsociety:10.1098/rspa.1914.0002 2024-06-02T08:05:13+00:00 On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect 1914 http://dx.doi.org/10.1098/rspa.1914.0002 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1914.0002 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character volume 89, issue 612, page 377-378 ISSN 0950-1207 2053-9150 journal-article 1914 crroyalsociety https://doi.org/10.1098/rspa.1914.0002 2024-05-07T14:16:17Z In a paper published recently in the ‘Philosophical Transactions’ “On the Thermal Properties of Carbonic Acid at Low Temperatures,” Prof. C. Frewen Jenkin and Mr. D. R. Pye give, amongst other results, those obtained from a series of measurements of the Joule-Thomson effect for liquid CO 2 at various temperatures. These results are tabulated in Table V of their paper. They are of particular interest because, within the range of temperatures to which they correspond, they find an inversion point for the Joule-Thomson effect, i. e ., a temperature at which the effect changes over from being a cooling (at higher temperatures) to being a heating. As they themselves say: “No experiments on the Joule-Thomson effect for liquid CO 2 appear to have been published” previously; and as they admit that it is not easy to say what effect the presence of a trace of air (which was there) may have on their results, any method of testing them should prove of value. Such a test can be made by utilising the values of the specific volumes of liquid CO 2 which they give in a diagram on p. 78 of their paper. Method of Test . If the drop of pressure employed may be treated as a differential the Joule-Thompson effect is given by the equation C p (∂T/∂ p ) E+ px = T(∂ v /∂T) p - v = T 2 ∂/∂T.( v /T) p . The inversion point must therefore correspond to a minimum (or maximum) value of v /T. Article in Journal/Newspaper Carbonic acid The Royal Society Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character 89 612 377 378 |
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English |
description |
In a paper published recently in the ‘Philosophical Transactions’ “On the Thermal Properties of Carbonic Acid at Low Temperatures,” Prof. C. Frewen Jenkin and Mr. D. R. Pye give, amongst other results, those obtained from a series of measurements of the Joule-Thomson effect for liquid CO 2 at various temperatures. These results are tabulated in Table V of their paper. They are of particular interest because, within the range of temperatures to which they correspond, they find an inversion point for the Joule-Thomson effect, i. e ., a temperature at which the effect changes over from being a cooling (at higher temperatures) to being a heating. As they themselves say: “No experiments on the Joule-Thomson effect for liquid CO 2 appear to have been published” previously; and as they admit that it is not easy to say what effect the presence of a trace of air (which was there) may have on their results, any method of testing them should prove of value. Such a test can be made by utilising the values of the specific volumes of liquid CO 2 which they give in a diagram on p. 78 of their paper. Method of Test . If the drop of pressure employed may be treated as a differential the Joule-Thompson effect is given by the equation C p (∂T/∂ p ) E+ px = T(∂ v /∂T) p - v = T 2 ∂/∂T.( v /T) p . The inversion point must therefore correspond to a minimum (or maximum) value of v /T. |
format |
Article in Journal/Newspaper |
title |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
spellingShingle |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
title_short |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
title_full |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
title_fullStr |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
title_full_unstemmed |
On an inversion point for liquid carbon dioxide in regard to the Joule-Thomson effect |
title_sort |
on an inversion point for liquid carbon dioxide in regard to the joule-thomson effect |
publisher |
The Royal Society |
publishDate |
1914 |
url |
http://dx.doi.org/10.1098/rspa.1914.0002 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1914.0002 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character volume 89, issue 612, page 377-378 ISSN 0950-1207 2053-9150 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspa.1914.0002 |
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Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character |
container_volume |
89 |
container_issue |
612 |
container_start_page |
377 |
op_container_end_page |
378 |
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1800750003404144640 |