Further experimental evidence that condensation is a major cause of airflow
This paper further explores the physics of water condensation, using an experimental structure designed for that purpose. The data show a highly significant correlation (R2 >0.94, p value <0.001) between observed airflows and partial pressure changes from condensation, when the results of diff...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2019-04-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/73288 |
| _version_ | 1811315642726350848 |
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| author | Peter Paul Bunyard Martin Hodnett Carlos Peña Javier D. Burgos-Salcedo |
| author_facet | Peter Paul Bunyard Martin Hodnett Carlos Peña Javier D. Burgos-Salcedo |
| author_sort | Peter Paul Bunyard |
| collection | DOAJ |
| description | This paper further explores the physics of water condensation, using an experimental structure designed for that purpose. The data show a highly significant correlation (R2 >0.94, p value <0.001) between observed airflows and partial pressure changes from condensation, when the results of different experiments are pooled. Changes in air density on cooling provide insufficient energy to account for the airflow. The finding is that the kinetic energy of the chilled air falls short by an order of magnitude, even to move a relatively small proportion of the 20 kg of air contained within the structure. Meanwhile the physics of condensation indicate a surplus of kinetic energy is made available from the air surrounding the locus of condensation. At low rates of condensation a considerable proportion of the available kinetic energy in the enclosed air is absorbed in friction and turbulence. That proportion reduces with higher rates of condensation. |
| first_indexed | 2024-04-13T11:34:16Z |
| format | Article |
| id | doaj.art-b031aa3b338046ffb2cf45069d4d4de9 |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-04-13T11:34:16Z |
| publishDate | 2019-04-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-b031aa3b338046ffb2cf45069d4d4de92022-12-22T02:48:29ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832019-04-0186209566310.15446/dyna.v86n209.7328850805Further experimental evidence that condensation is a major cause of airflowPeter Paul Bunyard0Martin Hodnett1Carlos Peña2Javier D. Burgos-Salcedo3Universidad Sergio Arboleda - IDEASACenterfor Ecology and HydrologyUniversidad Sergio Arboleda - Departamento de MatemáticaCorporación para la Investigación y la Innovación –CIINASThis paper further explores the physics of water condensation, using an experimental structure designed for that purpose. The data show a highly significant correlation (R2 >0.94, p value <0.001) between observed airflows and partial pressure changes from condensation, when the results of different experiments are pooled. Changes in air density on cooling provide insufficient energy to account for the airflow. The finding is that the kinetic energy of the chilled air falls short by an order of magnitude, even to move a relatively small proportion of the 20 kg of air contained within the structure. Meanwhile the physics of condensation indicate a surplus of kinetic energy is made available from the air surrounding the locus of condensation. At low rates of condensation a considerable proportion of the available kinetic energy in the enclosed air is absorbed in friction and turbulence. That proportion reduces with higher rates of condensation.https://revistas.unal.edu.co/index.php/dyna/article/view/73288airflowenergy of condensationenergy of air density. |
| spellingShingle | Peter Paul Bunyard Martin Hodnett Carlos Peña Javier D. Burgos-Salcedo Further experimental evidence that condensation is a major cause of airflow Dyna airflow energy of condensation energy of air density. |
| title | Further experimental evidence that condensation is a major cause of airflow |
| title_full | Further experimental evidence that condensation is a major cause of airflow |
| title_fullStr | Further experimental evidence that condensation is a major cause of airflow |
| title_full_unstemmed | Further experimental evidence that condensation is a major cause of airflow |
| title_short | Further experimental evidence that condensation is a major cause of airflow |
| title_sort | further experimental evidence that condensation is a major cause of airflow |
| topic | airflow energy of condensation energy of air density. |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/73288 |
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