Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components
An integral part of any open-type gas turbine plant is a low-emission combustion chamber, which is usually two-zone and cooled. One of the ways to reduce emission of harmful substanc-es is organizing low-emission low-temperature lean combustion with external heating of compo-nents. This paper invest...
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Academy of Sciences of Moldova
2021-06-01
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| Series: | Problems of the Regional Energetics |
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| Online Access: | https://journal.ie.asm.md/assets/files/11_02_50_2021.pdf |
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| author | Bachev N.L. Shilova A.A. Matyunin O.O. Betinskaya O.A. |
| author_facet | Bachev N.L. Shilova A.A. Matyunin O.O. Betinskaya O.A. |
| author_sort | Bachev N.L. |
| collection | DOAJ |
| description | An integral part of any open-type gas turbine plant is a low-emission combustion chamber, which is usually two-zone and cooled. One of the ways to reduce emission of harmful substanc-es is organizing low-emission low-temperature lean combustion with external heating of compo-nents. This paper investigates the effect of external heating of air and fuel gas on expansion of the lower combustion limit and stable flame position in a single-zone uncooled combustion chamber of a microgas turbine power plant. Stable position of the flame front in combustion chambers of this type mainly depends on the ratio between the average flow rate of the combus-tible-air mixture and the rate of turbulent combustion. This ratio depends on thermal, gas-dynamic, thermochemical and geometric factors. The purpose of this work is to substantiate the possibility of using the relative flow rate as a generalized characteristic. This goal was achieved in processing a large amount of published experimental data and numerical modeling of low-temperature combustion of lean mixtures. The most significant research result is determination of the range of relative flow rate (gk = 0.3…3.5·10-4 kg⁄s∙N), at which it is possible to ensure sta-ble flame position in a single-zone combustion chamber. Significance of the obtained results lies in the fact that using the relative flow rate makes it possible to quickly determine and analyze the geometric and gas-dynamic parameters and characteristics of turbulent combustion in com-bustion chambers of micro-gas turbine power plants. |
| format | Article |
| id | doaj-art-0c4e23b60bb84d94abe84d1648b0b33f |
| institution | Kabale University |
| issn | 1857-0070 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Academy of Sciences of Moldova |
| record_format | Article |
| series | Problems of the Regional Energetics |
| spelling | doaj-art-0c4e23b60bb84d94abe84d1648b0b33f2025-08-20T03:58:07ZengAcademy of Sciences of MoldovaProblems of the Regional Energetics1857-00702021-06-0150212714010.52254/1857-0070.2021.2-50.11Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of ComponentsBachev N.L.0Shilova A.A.1Matyunin O.O.2Betinskaya O.A.3Perm National Research Polytechnic University Perm, Russian FederationPerm National Research Polytechnic University Perm, Russian FederationPerm National Research Polytechnic University Perm, Russian FederationPerm National Research Polytechnic University Perm, Russian FederationAn integral part of any open-type gas turbine plant is a low-emission combustion chamber, which is usually two-zone and cooled. One of the ways to reduce emission of harmful substanc-es is organizing low-emission low-temperature lean combustion with external heating of compo-nents. This paper investigates the effect of external heating of air and fuel gas on expansion of the lower combustion limit and stable flame position in a single-zone uncooled combustion chamber of a microgas turbine power plant. Stable position of the flame front in combustion chambers of this type mainly depends on the ratio between the average flow rate of the combus-tible-air mixture and the rate of turbulent combustion. This ratio depends on thermal, gas-dynamic, thermochemical and geometric factors. The purpose of this work is to substantiate the possibility of using the relative flow rate as a generalized characteristic. This goal was achieved in processing a large amount of published experimental data and numerical modeling of low-temperature combustion of lean mixtures. The most significant research result is determination of the range of relative flow rate (gk = 0.3…3.5·10-4 kg⁄s∙N), at which it is possible to ensure sta-ble flame position in a single-zone combustion chamber. Significance of the obtained results lies in the fact that using the relative flow rate makes it possible to quickly determine and analyze the geometric and gas-dynamic parameters and characteristics of turbulent combustion in com-bustion chambers of micro-gas turbine power plants.https://journal.ie.asm.md/assets/files/11_02_50_2021.pdflow-temperature lean combustionexternal heating of componentsstable position of turbulent flamerelative flow rate. |
| spellingShingle | Bachev N.L. Shilova A.A. Matyunin O.O. Betinskaya O.A. Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components Problems of the Regional Energetics low-temperature lean combustion external heating of components stable position of turbulent flame relative flow rate. |
| title | Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components |
| title_full | Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components |
| title_fullStr | Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components |
| title_full_unstemmed | Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components |
| title_short | Investigation of Low-Temperature Lean Combustion Characteristics in Power Plants with External Heating of Components |
| title_sort | investigation of low temperature lean combustion characteristics in power plants with external heating of components |
| topic | low-temperature lean combustion external heating of components stable position of turbulent flame relative flow rate. |
| url | https://journal.ie.asm.md/assets/files/11_02_50_2021.pdf |
| work_keys_str_mv | AT bachevnl investigationoflowtemperatureleancombustioncharacteristicsinpowerplantswithexternalheatingofcomponents AT shilovaaa investigationoflowtemperatureleancombustioncharacteristicsinpowerplantswithexternalheatingofcomponents AT matyuninoo investigationoflowtemperatureleancombustioncharacteristicsinpowerplantswithexternalheatingofcomponents AT betinskayaoa investigationoflowtemperatureleancombustioncharacteristicsinpowerplantswithexternalheatingofcomponents |