Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine
This article describes a rotary piston pneumatic engine with a gas exchange system design that minimizes the value of the relative dead volume, as well as ensures the minimum dimensions and weight of the engine. The main purpose of the study is to evaluate the conversion efficiency of compressed air...
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| Format: | Article |
| Language: | English |
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Academy of Sciences of Moldova
2021-03-01
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| Series: | Problems of the Regional Energetics |
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| Online Access: | https://journal.ie.asm.md/assets/files/05_01_49_2021.pdf |
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| author | Mytrofanov O. Proskurin A. |
| author_facet | Mytrofanov O. Proskurin A. |
| author_sort | Mytrofanov O. |
| collection | DOAJ |
| description | This article describes a rotary piston pneumatic engine with a gas exchange system design that minimizes the value of the relative dead volume, as well as ensures the minimum dimensions and weight of the engine. The main purpose of the study is to evaluate the conversion efficiency of compressed air energy in the working cylinder of the rotary piston pneumatic engines using the exergy method of thermodynamic analysis. To achieve the set goal of the study, physical modeling of various operation modes has been performed. The most significant result is that, based on the physical and mathematical modeling, a thermodynamic assessment of the efficien-cy of the compressed air energy conversion has been performed. The significance of the results obtained lies in the fact that the effect of the main operational parameters of the pneumatic en-gine on the efficiency of energy conversion is established. The basic equations of the exergy method of the thermodynamic analysis are presented. The results of physical and mathematical modeling of various operation modes are presented. The main reasons for the decrease in the energy conversion efficiency at low and rated loads are emphasized. The amount of exergy supplied with the air flow was established, which, depending on the operation mode, amounted to 2.2…11.4 kW. According to the presented results, the most optimal speed range, based on the achievement of the maximum values of the specific efficient work and exergy efficiency, is 55…70% of the nominal value. It was found that an increase in the operation pressure decreases slightly the exergy efficiency. A twofold increase in the operation pressure of the pneumatic en-gine increases the efficient power by 46 % at a simultaneous decrease in the exergy efficiency by 8.2 %. |
| format | Article |
| id | doaj-art-84fa1b5f1c9e4b8991efaa73cfb41a2c |
| institution | Kabale University |
| issn | 1857-0070 |
| language | English |
| publishDate | 2021-03-01 |
| publisher | Academy of Sciences of Moldova |
| record_format | Article |
| series | Problems of the Regional Energetics |
| spelling | doaj-art-84fa1b5f1c9e4b8991efaa73cfb41a2c2025-08-20T03:33:56ZengAcademy of Sciences of MoldovaProblems of the Regional Energetics1857-00702021-03-014913948doi.org/10.52254/1857-0070.2021.1-49.03Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic EngineMytrofanov O.0https://orcid.org/0000-0003-3460-5369Proskurin A.1https://orcid.org/0000-0002-5225-6767Admiral Makarov National University of Shipbuilding Mykolaiv, UkraineAdmiral Makarov National University of Shipbuilding Mykolaiv, UkraineThis article describes a rotary piston pneumatic engine with a gas exchange system design that minimizes the value of the relative dead volume, as well as ensures the minimum dimensions and weight of the engine. The main purpose of the study is to evaluate the conversion efficiency of compressed air energy in the working cylinder of the rotary piston pneumatic engines using the exergy method of thermodynamic analysis. To achieve the set goal of the study, physical modeling of various operation modes has been performed. The most significant result is that, based on the physical and mathematical modeling, a thermodynamic assessment of the efficien-cy of the compressed air energy conversion has been performed. The significance of the results obtained lies in the fact that the effect of the main operational parameters of the pneumatic en-gine on the efficiency of energy conversion is established. The basic equations of the exergy method of the thermodynamic analysis are presented. The results of physical and mathematical modeling of various operation modes are presented. The main reasons for the decrease in the energy conversion efficiency at low and rated loads are emphasized. The amount of exergy supplied with the air flow was established, which, depending on the operation mode, amounted to 2.2…11.4 kW. According to the presented results, the most optimal speed range, based on the achievement of the maximum values of the specific efficient work and exergy efficiency, is 55…70% of the nominal value. It was found that an increase in the operation pressure decreases slightly the exergy efficiency. A twofold increase in the operation pressure of the pneumatic en-gine increases the efficient power by 46 % at a simultaneous decrease in the exergy efficiency by 8.2 %.https://journal.ie.asm.md/assets/files/05_01_49_2021.pdfcompressed airrotary piston engine |
| spellingShingle | Mytrofanov O. Proskurin A. Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine Problems of the Regional Energetics compressed air rotary piston engine |
| title | Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine |
| title_full | Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine |
| title_fullStr | Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine |
| title_full_unstemmed | Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine |
| title_short | Analysis of Compressed Air Energy Conversion Processes in a Rotary Piston Pneumatic Engine |
| title_sort | analysis of compressed air energy conversion processes in a rotary piston pneumatic engine |
| topic | compressed air rotary piston engine |
| url | https://journal.ie.asm.md/assets/files/05_01_49_2021.pdf |
| work_keys_str_mv | AT mytrofanovo analysisofcompressedairenergyconversionprocessesinarotarypistonpneumaticengine AT proskurina analysisofcompressedairenergyconversionprocessesinarotarypistonpneumaticengine |