Experimental observations of the effects of intermolecular Van der Waal forces on entropy
Abstract An experimental effort was conducted to measure the change in internal energy of non-ideal carbon dioxide as its volume rapidly expanded with the sudden opening of a valve from one to two compressed gas cylinders. This was achieved by measuring the mass heat capacity of the gas cylinders an...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-11093-z |
| _version_ | 1817985409647378432 |
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| author | Matthew David Marko |
| author_facet | Matthew David Marko |
| author_sort | Matthew David Marko |
| collection | DOAJ |
| description | Abstract An experimental effort was conducted to measure the change in internal energy of non-ideal carbon dioxide as its volume rapidly expanded with the sudden opening of a valve from one to two compressed gas cylinders. This was achieved by measuring the mass heat capacity of the gas cylinders and the manifold-valve, and measuring the change in temperature from the sudden doubling of volume of the non-ideal carbon dioxide. It was determined that an empirical equation for the change in internal energy of a non-ideal fluid was more accurate than previous methods used for estimating the change in internal energy by estimating the change in entropy. With this empirical equation, a theoretical ideal Stirling cycle heat engine that exceeds the Carnot efficiency was realized by utilizing non-ideal carbon dioxide as a working fluid. |
| first_indexed | 2024-04-13T23:57:52Z |
| format | Article |
| id | doaj.art-c4c74ac0405e43d68fc9e56fd96a6b83 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T23:57:52Z |
| publishDate | 2022-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-c4c74ac0405e43d68fc9e56fd96a6b832022-12-22T02:23:50ZengNature PortfolioScientific Reports2045-23222022-05-0112111410.1038/s41598-022-11093-zExperimental observations of the effects of intermolecular Van der Waal forces on entropyMatthew David Marko0Marko Motors LLCAbstract An experimental effort was conducted to measure the change in internal energy of non-ideal carbon dioxide as its volume rapidly expanded with the sudden opening of a valve from one to two compressed gas cylinders. This was achieved by measuring the mass heat capacity of the gas cylinders and the manifold-valve, and measuring the change in temperature from the sudden doubling of volume of the non-ideal carbon dioxide. It was determined that an empirical equation for the change in internal energy of a non-ideal fluid was more accurate than previous methods used for estimating the change in internal energy by estimating the change in entropy. With this empirical equation, a theoretical ideal Stirling cycle heat engine that exceeds the Carnot efficiency was realized by utilizing non-ideal carbon dioxide as a working fluid.https://doi.org/10.1038/s41598-022-11093-z |
| spellingShingle | Matthew David Marko Experimental observations of the effects of intermolecular Van der Waal forces on entropy Scientific Reports |
| title | Experimental observations of the effects of intermolecular Van der Waal forces on entropy |
| title_full | Experimental observations of the effects of intermolecular Van der Waal forces on entropy |
| title_fullStr | Experimental observations of the effects of intermolecular Van der Waal forces on entropy |
| title_full_unstemmed | Experimental observations of the effects of intermolecular Van der Waal forces on entropy |
| title_short | Experimental observations of the effects of intermolecular Van der Waal forces on entropy |
| title_sort | experimental observations of the effects of intermolecular van der waal forces on entropy |
| url | https://doi.org/10.1038/s41598-022-11093-z |
| work_keys_str_mv | AT matthewdavidmarko experimentalobservationsoftheeffectsofintermolecularvanderwaalforcesonentropy |