Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines
Thermal power plants (TPPs) with back-pressure steam turbines (BPSTs) were widely used for electricity and steam production in the Union of Soviet Socialist Republics (USSR) due to their high efficiency. The collapse of the USSR in 1991 led to a decrease in industrial production, as a result of whic...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/24/8519 |
| _version_ | 1797504953518915584 |
|---|---|
| author | Nikolay Rogalev Vladimir Kindra Ivan Komarov Sergey Osipov Olga Zlyvko Dmitrii Lvov |
| author_facet | Nikolay Rogalev Vladimir Kindra Ivan Komarov Sergey Osipov Olga Zlyvko Dmitrii Lvov |
| author_sort | Nikolay Rogalev |
| collection | DOAJ |
| description | Thermal power plants (TPPs) with back-pressure steam turbines (BPSTs) were widely used for electricity and steam production in the Union of Soviet Socialist Republics (USSR) due to their high efficiency. The collapse of the USSR in 1991 led to a decrease in industrial production, as a result of which, steam production in Russia was reduced and BPSTs were left without load. To resume the operation of TPPs with BPSTs, it is necessary to modernize the existing power units. This paper presents the results of the thermodynamic analysis of different methods of modernization of TPPs with BPSTs: the superstructure of the steam low-pressure turbine (LPT) and the superstructure of the power unit operating on low-boiling-point fluid. The influence of ambient temperature on the developed cycles’ efficiency was evaluated. It was found that the usage of low-boiling-point fluid is thermodynamically efficient for an ambient temperature lower than 7 °C. Moreover, recommendations for the choice of reconstruction method were formulated based on technical assessments. |
| first_indexed | 2024-03-10T04:11:44Z |
| format | Article |
| id | doaj.art-0acb553af07f444a957ebc80537be58d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:11:44Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0acb553af07f444a957ebc80537be58d2023-11-23T08:08:24ZengMDPI AGEnergies1996-10732021-12-011424851910.3390/en14248519Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam TurbinesNikolay Rogalev0Vladimir Kindra1Ivan Komarov2Sergey Osipov3Olga Zlyvko4Dmitrii Lvov5Department of Thermal Power Plants, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaDepartment of Innovative Technologies of High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaDepartment of Innovative Technologies of High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaDepartment of Innovative Technologies of High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaDepartment of Innovative Technologies of High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaDepartment of Innovative Technologies of High-Tech Industries, National Research University “Moscow Power Engineering Institute”, 111250 Moscow, RussiaThermal power plants (TPPs) with back-pressure steam turbines (BPSTs) were widely used for electricity and steam production in the Union of Soviet Socialist Republics (USSR) due to their high efficiency. The collapse of the USSR in 1991 led to a decrease in industrial production, as a result of which, steam production in Russia was reduced and BPSTs were left without load. To resume the operation of TPPs with BPSTs, it is necessary to modernize the existing power units. This paper presents the results of the thermodynamic analysis of different methods of modernization of TPPs with BPSTs: the superstructure of the steam low-pressure turbine (LPT) and the superstructure of the power unit operating on low-boiling-point fluid. The influence of ambient temperature on the developed cycles’ efficiency was evaluated. It was found that the usage of low-boiling-point fluid is thermodynamically efficient for an ambient temperature lower than 7 °C. Moreover, recommendations for the choice of reconstruction method were formulated based on technical assessments.https://www.mdpi.com/1996-1073/14/24/8519low-boiling-point fluidthermodynamic optimizationefficiencyaverage annual temperaturenet powersuperstructure |
| spellingShingle | Nikolay Rogalev Vladimir Kindra Ivan Komarov Sergey Osipov Olga Zlyvko Dmitrii Lvov Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines Energies low-boiling-point fluid thermodynamic optimization efficiency average annual temperature net power superstructure |
| title | Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines |
| title_full | Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines |
| title_fullStr | Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines |
| title_full_unstemmed | Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines |
| title_short | Comparative Analysis of Low-Grade Heat Utilization Methods for Thermal Power Plants with Back-Pressure Steam Turbines |
| title_sort | comparative analysis of low grade heat utilization methods for thermal power plants with back pressure steam turbines |
| topic | low-boiling-point fluid thermodynamic optimization efficiency average annual temperature net power superstructure |
| url | https://www.mdpi.com/1996-1073/14/24/8519 |
| work_keys_str_mv | AT nikolayrogalev comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines AT vladimirkindra comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines AT ivankomarov comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines AT sergeyosipov comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines AT olgazlyvko comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines AT dmitriilvov comparativeanalysisoflowgradeheatutilizationmethodsforthermalpowerplantswithbackpressuresteamturbines |