Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control
Controlling the exhaust gas temperature (EGT) of coal⁻fired boilers at a reasonable value is beneficial to ensuring unit efficiency and preventing acid corrosion and fouling of tail heating surfaces in power plants. To obtain the operation regulation of coupled high⁻low energy fl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/4/706 |
| _version_ | 1811301260320571392 |
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| author | Jiayou Liu Fengzhong Sun |
| author_facet | Jiayou Liu Fengzhong Sun |
| author_sort | Jiayou Liu |
| collection | DOAJ |
| description | Controlling the exhaust gas temperature (EGT) of coal⁻fired boilers at a reasonable value is beneficial to ensuring unit efficiency and preventing acid corrosion and fouling of tail heating surfaces in power plants. To obtain the operation regulation of coupled high⁻low energy flue gas waste heat recovery system (CWHRS) under a given EGT, experimental equipment was designed and built. Experiments were carried out to maintain the exhaust gas temperature under different flue gas flow, flue gas temperature and air temperature conditions. As the flue gas flows, the flue gas temperatures and air temperatures increased, and the bypass flue gas flow proportions or the water flows of the additional economizer were increased to maintain the EGT at about 85 °C. An improved low temperature economizer (LTE) and front located air heater (FAH) system were put forward. As the flow of the crossover pipe increased, the EGT and the inlet water temperature of the LTE increased. As the flow of the circulating loop increased, the EGT and the inlet water temperature of the LTE decreased. Operation regulations of LTE⁻FAH system under four cases were given. The operation regulations of CWHRS and LTE⁻FAH system can provide references for power plant operation. |
| first_indexed | 2024-04-13T07:05:37Z |
| format | Article |
| id | doaj.art-86ee601ebf1e40cca1852b830d74404d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T07:05:37Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-86ee601ebf1e40cca1852b830d74404d2022-12-22T02:57:00ZengMDPI AGEnergies1996-10732019-02-0112470610.3390/en12040706en12040706Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature ControlJiayou Liu0Fengzhong Sun1School of Energy and Power Engineering, Shandong University, Jinan 250061, ChinaSchool of Energy and Power Engineering, Shandong University, Jinan 250061, ChinaControlling the exhaust gas temperature (EGT) of coal⁻fired boilers at a reasonable value is beneficial to ensuring unit efficiency and preventing acid corrosion and fouling of tail heating surfaces in power plants. To obtain the operation regulation of coupled high⁻low energy flue gas waste heat recovery system (CWHRS) under a given EGT, experimental equipment was designed and built. Experiments were carried out to maintain the exhaust gas temperature under different flue gas flow, flue gas temperature and air temperature conditions. As the flue gas flows, the flue gas temperatures and air temperatures increased, and the bypass flue gas flow proportions or the water flows of the additional economizer were increased to maintain the EGT at about 85 °C. An improved low temperature economizer (LTE) and front located air heater (FAH) system were put forward. As the flow of the crossover pipe increased, the EGT and the inlet water temperature of the LTE increased. As the flow of the circulating loop increased, the EGT and the inlet water temperature of the LTE decreased. Operation regulations of LTE⁻FAH system under four cases were given. The operation regulations of CWHRS and LTE⁻FAH system can provide references for power plant operation.https://www.mdpi.com/1996-1073/12/4/706waste heat recoveryexhaust gas temperature controloperation regulationflow adjustment |
| spellingShingle | Jiayou Liu Fengzhong Sun Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control Energies waste heat recovery exhaust gas temperature control operation regulation flow adjustment |
| title | Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control |
| title_full | Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control |
| title_fullStr | Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control |
| title_full_unstemmed | Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control |
| title_short | Experimental Study on Operation Regulation of a Coupled High–Low Energy Flue Gas Waste Heat Recovery System Based on Exhaust Gas Temperature Control |
| title_sort | experimental study on operation regulation of a coupled high low energy flue gas waste heat recovery system based on exhaust gas temperature control |
| topic | waste heat recovery exhaust gas temperature control operation regulation flow adjustment |
| url | https://www.mdpi.com/1996-1073/12/4/706 |
| work_keys_str_mv | AT jiayouliu experimentalstudyonoperationregulationofacoupledhighlowenergyfluegaswasteheatrecoverysystembasedonexhaustgastemperaturecontrol AT fengzhongsun experimentalstudyonoperationregulationofacoupledhighlowenergyfluegaswasteheatrecoverysystembasedonexhaustgastemperaturecontrol |